diff --git a/CHANGELOG.md b/CHANGELOG.md
index eeb6e81019..11169ff43d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2025.11.2
 
 ### General
 -
@@ -7,7 +7,8 @@
 -
 
 ### Server
--
+- Enhance: メモリ使用量を削減しました
+- Enhance: ActivityPubアクティビティを送信する際のパフォーマンス向上
 
 
 ## 2025.11.1
diff --git a/package.json b/package.json
index bcbd1315f9..1ad60c3f24 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "misskey",
-	"version": "2025.11.1",
+	"version": "2025.11.2-alpha.0",
 	"codename": "nasubi",
 	"repository": {
 		"type": "git",
diff --git a/packages/backend/package.json b/packages/backend/package.json
index c3e0ce6e75..9feef3951d 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -121,16 +121,13 @@
 		"fluent-ffmpeg": "2.1.3",
 		"form-data": "4.0.5",
 		"got": "14.6.4",
-		"happy-dom": "20.0.10",
 		"hpagent": "1.2.0",
-		"htmlescape": "1.1.1",
 		"http-link-header": "1.1.3",
 		"ioredis": "5.8.2",
 		"ip-cidr": "4.0.2",
 		"ipaddr.js": "2.2.0",
 		"is-svg": "6.1.0",
 		"js-yaml": "4.1.1",
-		"jsdom": "26.1.0",
 		"json5": "2.2.3",
 		"jsonld": "9.0.0",
 		"jsrsasign": "11.1.0",
@@ -145,6 +142,7 @@
 		"nanoid": "5.1.6",
 		"nested-property": "4.0.0",
 		"node-fetch": "3.3.2",
+		"node-html-parser": "7.0.1",
 		"nodemailer": "7.0.10",
 		"nsfwjs": "4.2.0",
 		"oauth": "0.10.2",
@@ -152,7 +150,6 @@
 		"oauth2orize-pkce": "0.1.2",
 		"os-utils": "0.0.14",
 		"otpauth": "9.4.1",
-		"parse5": "7.3.0",
 		"pg": "8.16.3",
 		"pkce-challenge": "5.0.0",
 		"probe-image-size": "7.2.3",
@@ -199,11 +196,9 @@
 		"@types/color-convert": "2.0.4",
 		"@types/content-disposition": "0.5.9",
 		"@types/fluent-ffmpeg": "2.1.28",
-		"@types/htmlescape": "1.1.3",
 		"@types/http-link-header": "1.0.7",
 		"@types/jest": "29.5.14",
 		"@types/js-yaml": "4.0.9",
-		"@types/jsdom": "21.1.7",
 		"@types/jsonld": "1.5.15",
 		"@types/jsrsasign": "10.5.15",
 		"@types/mime-types": "3.0.1",
diff --git a/packages/backend/src/core/FetchInstanceMetadataService.ts b/packages/backend/src/core/FetchInstanceMetadataService.ts
index ce3af7c774..955f7035d7 100644
--- a/packages/backend/src/core/FetchInstanceMetadataService.ts
+++ b/packages/backend/src/core/FetchInstanceMetadataService.ts
@@ -5,9 +5,9 @@
 
 import { URL } from 'node:url';
 import { Inject, Injectable } from '@nestjs/common';
-import { JSDOM } from 'jsdom';
 import tinycolor from 'tinycolor2';
 import * as Redis from 'ioredis';
+import * as htmlParser from 'node-html-parser';
 import type { MiInstance } from '@/models/Instance.js';
 import type Logger from '@/logger.js';
 import { DI } from '@/di-symbols.js';
@@ -15,7 +15,6 @@ import { LoggerService } from '@/core/LoggerService.js';
 import { HttpRequestService } from '@/core/HttpRequestService.js';
 import { bindThis } from '@/decorators.js';
 import { FederatedInstanceService } from '@/core/FederatedInstanceService.js';
-import type { DOMWindow } from 'jsdom';
 
 type NodeInfo = {
 	openRegistrations?: unknown;
@@ -59,7 +58,7 @@ export class FetchInstanceMetadataService {
 		return await this.redisClient.set(
 			`fetchInstanceMetadata:mutex:v2:${host}`, '1',
 			'EX', 30, // 30秒したら自動でロック解除 https://github.com/misskey-dev/misskey/issues/13506#issuecomment-1975375395
-			'GET' // 古い値を返す（なかったらnull）
+			'GET', // 古い値を返す（なかったらnull）
 		);
 	}
 
@@ -181,15 +180,14 @@ export class FetchInstanceMetadataService {
 	}
 
 	@bindThis
-	private async fetchDom(instance: MiInstance): Promise<Document> {
+	private async fetchDom(instance: MiInstance): Promise<htmlParser.HTMLElement> {
 		this.logger.info(`Fetching HTML of ${instance.host} ...`);
 
 		const url = 'https://' + instance.host;
 
 		const html = await this.httpRequestService.getHtml(url);
 
-		const { window } = new JSDOM(html);
-		const doc = window.document;
+		const doc = htmlParser.parse(html);
 
 		return doc;
 	}
@@ -206,12 +204,12 @@ export class FetchInstanceMetadataService {
 	}
 
 	@bindThis
-	private async fetchFaviconUrl(instance: MiInstance, doc: Document | null): Promise<string | null> {
+	private async fetchFaviconUrl(instance: MiInstance, doc: htmlParser.HTMLElement | null): Promise<string | null> {
 		const url = 'https://' + instance.host;
 
 		if (doc) {
 			// https://github.com/misskey-dev/misskey/pull/8220#issuecomment-1025104043
-			const href = Array.from(doc.getElementsByTagName('link')).reverse().find(link => link.relList.contains('icon'))?.href;
+			const href = Array.from(doc.getElementsByTagName('link')).reverse().find(link => link.attributes.rel === 'icon')?.attributes.href;
 
 			if (href) {
 				return (new URL(href, url)).href;
@@ -232,7 +230,7 @@ export class FetchInstanceMetadataService {
 	}
 
 	@bindThis
-	private async fetchIconUrl(instance: MiInstance, doc: Document | null, manifest: Record<string, any> | null): Promise<string | null> {
+	private async fetchIconUrl(instance: MiInstance, doc: htmlParser.HTMLElement | null, manifest: Record<string, any> | null): Promise<string | null> {
 		if (manifest && manifest.icons && manifest.icons.length > 0 && manifest.icons[0].src) {
 			const url = 'https://' + instance.host;
 			return (new URL(manifest.icons[0].src, url)).href;
@@ -246,9 +244,9 @@ export class FetchInstanceMetadataService {
 			// https://github.com/misskey-dev/misskey/pull/8220/files/0ec4eba22a914e31b86874f12448f88b3e58dd5a#r796487559
 			const href =
 				[
-					links.find(link => link.relList.contains('apple-touch-icon-precomposed'))?.href,
-					links.find(link => link.relList.contains('apple-touch-icon'))?.href,
-					links.find(link => link.relList.contains('icon'))?.href,
+					links.find(link => link.attributes.rel?.split(/\s+/).includes('apple-touch-icon-precomposed'))?.attributes.href,
+					links.find(link => link.attributes.rel?.split(/\s+/).includes('apple-touch-icon'))?.attributes.href,
+					links.find(link => link.attributes.rel?.split(/\s+/).includes('icon'))?.attributes.href,
 				]
 					.find(href => href);
 
@@ -261,7 +259,7 @@ export class FetchInstanceMetadataService {
 	}
 
 	@bindThis
-	private async getThemeColor(info: NodeInfo | null, doc: Document | null, manifest: Record<string, any> | null): Promise<string | null> {
+	private async getThemeColor(info: NodeInfo | null, doc: htmlParser.HTMLElement | null, manifest: Record<string, any> | null): Promise<string | null> {
 		const themeColor = info?.metadata?.themeColor ?? doc?.querySelector('meta[name="theme-color"]')?.getAttribute('content') ?? manifest?.theme_color;
 
 		if (themeColor) {
@@ -273,7 +271,7 @@ export class FetchInstanceMetadataService {
 	}
 
 	@bindThis
-	private async getSiteName(info: NodeInfo | null, doc: Document | null, manifest: Record<string, any> | null): Promise<string | null> {
+	private async getSiteName(info: NodeInfo | null, doc: htmlParser.HTMLElement | null, manifest: Record<string, any> | null): Promise<string | null> {
 		if (info && info.metadata) {
 			if (typeof info.metadata.nodeName === 'string') {
 				return info.metadata.nodeName;
@@ -298,7 +296,7 @@ export class FetchInstanceMetadataService {
 	}
 
 	@bindThis
-	private async getDescription(info: NodeInfo | null, doc: Document | null, manifest: Record<string, any> | null): Promise<string | null> {
+	private async getDescription(info: NodeInfo | null, doc: htmlParser.HTMLElement | null, manifest: Record<string, any> | null): Promise<string | null> {
 		if (info && info.metadata) {
 			if (typeof info.metadata.nodeDescription === 'string') {
 				return info.metadata.nodeDescription;
diff --git a/packages/backend/src/core/MfmService.ts b/packages/backend/src/core/MfmService.ts
index 28d980f718..b9f1c62d9d 100644
--- a/packages/backend/src/core/MfmService.ts
+++ b/packages/backend/src/core/MfmService.ts
@@ -5,26 +5,19 @@
 
 import { URL } from 'node:url';
 import { Inject, Injectable } from '@nestjs/common';
-import * as parse5 from 'parse5';
-import { type Document, type HTMLParagraphElement, Window, XMLSerializer } from 'happy-dom';
+import * as htmlParser from 'node-html-parser';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
 import { intersperse } from '@/misc/prelude/array.js';
 import { normalizeForSearch } from '@/misc/normalize-for-search.js';
 import type { IMentionedRemoteUsers } from '@/models/Note.js';
 import { bindThis } from '@/decorators.js';
-import type { DefaultTreeAdapterMap } from 'parse5';
+import { escapeHtml } from '@/misc/escape-html.js';
 import type * as mfm from 'mfm-js';
 
-const treeAdapter = parse5.defaultTreeAdapter;
-type Node = DefaultTreeAdapterMap['node'];
-type ChildNode = DefaultTreeAdapterMap['childNode'];
-
 const urlRegex = /^https?:\/\/[\w\/:%#@$&?!()\[\]~.,=+\-]+/;
 const urlRegexFull = /^https?:\/\/[\w\/:%#@$&?!()\[\]~.,=+\-]+$/;
 
-export type Appender = (document: Document, body: HTMLParagraphElement) => void;
-
 @Injectable()
 export class MfmService {
 	constructor(
@@ -40,68 +33,68 @@ export class MfmService {
 
 		const normalizedHashtagNames = hashtagNames == null ? undefined : new Set<string>(hashtagNames.map(x => normalizeForSearch(x)));
 
-		const dom = parse5.parseFragment(html);
+		const doc = htmlParser.parse(`<div>${html}</div>`);
 
 		let text = '';
 
-		for (const n of dom.childNodes) {
+		for (const n of doc.childNodes) {
 			analyze(n);
 		}
 
 		return text.trim();
 
-		function getText(node: Node): string {
-			if (treeAdapter.isTextNode(node)) return node.value;
-			if (!treeAdapter.isElementNode(node)) return '';
-			if (node.nodeName === 'br') return '\n';
+		function getText(node: htmlParser.Node): string {
+			if (node instanceof htmlParser.TextNode) return node.textContent;
+			if (!(node instanceof htmlParser.HTMLElement)) return '';
+			if (node.tagName === 'BR') return '\n';
 
-			if (node.childNodes) {
+			if (node.childNodes != null) {
 				return node.childNodes.map(n => getText(n)).join('');
 			}
 
 			return '';
 		}
 
-		function appendChildren(childNodes: ChildNode[]): void {
-			if (childNodes) {
+		function analyzeChildren(childNodes: htmlParser.Node[] | null): void {
+			if (childNodes != null) {
 				for (const n of childNodes) {
 					analyze(n);
 				}
 			}
 		}
 
-		function analyze(node: Node) {
-			if (treeAdapter.isTextNode(node)) {
-				text += node.value;
+		function analyze(node: htmlParser.Node) {
+			if (node instanceof htmlParser.TextNode) {
+				text += node.textContent;
 				return;
 			}
 
 			// Skip comment or document type node
-			if (!treeAdapter.isElementNode(node)) {
+			if (!(node instanceof htmlParser.HTMLElement)) {
 				return;
 			}
 
-			switch (node.nodeName) {
-				case 'br': {
+			switch (node.tagName) {
+				case 'BR': {
 					text += '\n';
 					break;
 				}
 
-				case 'a': {
+				case 'A': {
 					const txt = getText(node);
-					const rel = node.attrs.find(x => x.name === 'rel');
-					const href = node.attrs.find(x => x.name === 'href');
+					const rel = node.attributes.rel;
+					const href = node.attributes.href;
 
 					// ハッシュタグ
-					if (normalizedHashtagNames && href && normalizedHashtagNames.has(normalizeForSearch(txt))) {
+					if (normalizedHashtagNames && href != null && normalizedHashtagNames.has(normalizeForSearch(txt))) {
 						text += txt;
 						// メンション
-					} else if (txt.startsWith('@') && !(rel && rel.value.startsWith('me '))) {
+					} else if (txt.startsWith('@') && !(rel != null && rel.startsWith('me '))) {
 						const part = txt.split('@');
 
 						if (part.length === 2 && href) {
 							//#region ホスト名部分が省略されているので復元する
-							const acct = `${txt}@${(new URL(href.value)).hostname}`;
+							const acct = `${txt}@${(new URL(href)).hostname}`;
 							text += acct;
 							//#endregion
 						} else if (part.length === 3) {
@@ -116,17 +109,17 @@ export class MfmService {
 							if (!href) {
 								return txt;
 							}
-							if (!txt || txt === href.value) {	// #6383: Missing text node
-								if (href.value.match(urlRegexFull)) {
-									return href.value;
+							if (!txt || txt === href) {	// #6383: Missing text node
+								if (href.match(urlRegexFull)) {
+									return href;
 								} else {
-									return `<${href.value}>`;
+									return `<${href}>`;
 								}
 							}
-							if (href.value.match(urlRegex) && !href.value.match(urlRegexFull)) {
-								return `[${txt}](<${href.value}>)`;	// #6846
+							if (href.match(urlRegex) && !href.match(urlRegexFull)) {
+								return `[${txt}](<${href}>)`;	// #6846
 							} else {
-								return `[${txt}](${href.value})`;
+								return `[${txt}](${href})`;
 							}
 						};
 
@@ -135,60 +128,64 @@ export class MfmService {
 					break;
 				}
 
-				case 'h1': {
+				case 'H1': {
 					text += '【';
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					text += '】\n';
 					break;
 				}
 
-				case 'b':
-				case 'strong': {
+				case 'B':
+				case 'STRONG': {
 					text += '**';
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					text += '**';
 					break;
 				}
 
-				case 'small': {
+				case 'SMALL': {
 					text += '<small>';
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					text += '</small>';
 					break;
 				}
 
-				case 's':
-				case 'del': {
+				case 'S':
+				case 'DEL': {
 					text += '~~';
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					text += '~~';
 					break;
 				}
 
-				case 'i':
-				case 'em': {
+				case 'I':
+				case 'EM': {
 					text += '<i>';
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					text += '</i>';
 					break;
 				}
 
-				case 'ruby': {
+				case 'RUBY': {
 					let ruby: [string, string][] = [];
 					for (const child of node.childNodes) {
-						if (child.nodeName === 'rp') {
+						if ((child instanceof htmlParser.TextNode) && !/\s|\[|\]/.test(child.textContent)) {
+							ruby.push([child.textContent, '']);
 							continue;
 						}
-						if (treeAdapter.isTextNode(child) && !/\s|\[|\]/.test(child.value)) {
-							ruby.push([child.value, '']);
+
+						if (!(child instanceof htmlParser.HTMLElement)) continue;
+
+						if (child.tagName === 'RP') {
 							continue;
 						}
-						if (child.nodeName === 'rt' && ruby.length > 0) {
+
+						if (child.tagName === 'RT' && ruby.length > 0) {
 							const rt = getText(child);
 							if (/\s|\[|\]/.test(rt)) {
 								// If any space is included in rt, it is treated as a normal text
 								ruby = [];
-								appendChildren(node.childNodes);
+								analyzeChildren(node.childNodes);
 								break;
 							} else {
 								ruby.at(-1)![1] = rt;
@@ -197,7 +194,7 @@ export class MfmService {
 						}
 						// If any other element is included in ruby, it is treated as a normal text
 						ruby = [];
-						appendChildren(node.childNodes);
+						analyzeChildren(node.childNodes);
 						break;
 					}
 					for (const [base, rt] of ruby) {
@@ -207,26 +204,30 @@ export class MfmService {
 				}
 
 				// block code (<pre><code>)
-				case 'pre': {
-					if (node.childNodes.length === 1 && node.childNodes[0].nodeName === 'code') {
+				case 'PRE': {
+					if (node.childNodes.length === 1 && (node.childNodes[0] instanceof htmlParser.HTMLElement) && node.childNodes[0].tagName === 'CODE') {
 						text += '\n```\n';
 						text += getText(node.childNodes[0]);
 						text += '\n```\n';
+					} else if (node.childNodes.length === 1 && (node.childNodes[0] instanceof htmlParser.TextNode) && node.childNodes[0].textContent.startsWith('<code>') && node.childNodes[0].textContent.endsWith('</code>')) {
+						text += '\n```\n';
+						text += node.childNodes[0].textContent.slice(6, -7);
+						text += '\n```\n';
 					} else {
-						appendChildren(node.childNodes);
+						analyzeChildren(node.childNodes);
 					}
 					break;
 				}
 
 				// inline code (<code>)
-				case 'code': {
+				case 'CODE': {
 					text += '`';
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					text += '`';
 					break;
 				}
 
-				case 'blockquote': {
+				case 'BLOCKQUOTE': {
 					const t = getText(node);
 					if (t) {
 						text += '\n> ';
@@ -235,33 +236,33 @@ export class MfmService {
 					break;
 				}
 
-				case 'p':
-				case 'h2':
-				case 'h3':
-				case 'h4':
-				case 'h5':
-				case 'h6': {
+				case 'P':
+				case 'H2':
+				case 'H3':
+				case 'H4':
+				case 'H5':
+				case 'H6': {
 					text += '\n\n';
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					break;
 				}
 
 				// other block elements
-				case 'div':
-				case 'header':
-				case 'footer':
-				case 'article':
-				case 'li':
-				case 'dt':
-				case 'dd': {
+				case 'DIV':
+				case 'HEADER':
+				case 'FOOTER':
+				case 'ARTICLE':
+				case 'LI':
+				case 'DT':
+				case 'DD': {
 					text += '\n';
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					break;
 				}
 
 				default:	// includes inline elements
 				{
-					appendChildren(node.childNodes);
+					analyzeChildren(node.childNodes);
 					break;
 				}
 			}
@@ -269,52 +270,35 @@ export class MfmService {
 	}
 
 	@bindThis
-	public toHtml(nodes: mfm.MfmNode[] | null, mentionedRemoteUsers: IMentionedRemoteUsers = [], additionalAppenders: Appender[] = []) {
+	public toHtml(nodes: mfm.MfmNode[] | null, mentionedRemoteUsers: IMentionedRemoteUsers = [], extraHtml: string | null = null) {
 		if (nodes == null) {
 			return null;
 		}
 
-		const { happyDOM, window } = new Window();
-
-		const doc = window.document;
-
-		const body = doc.createElement('p');
-
-		function appendChildren(children: mfm.MfmNode[], targetElement: any): void {
-			if (children) {
-				for (const child of children.map(x => (handlers as any)[x.type](x))) targetElement.appendChild(child);
-			}
+		function toHtml(children?: mfm.MfmNode[]): string {
+			if (children == null) return '';
+			return children.map(x => handlers[x.type](x)).join('');
 		}
 
 		function fnDefault(node: mfm.MfmFn) {
-			const el = doc.createElement('i');
-			appendChildren(node.children, el);
-			return el;
+			return `<i>${toHtml(node.children)}</i>`;
 		}
 
-		const handlers: { [K in mfm.MfmNode['type']]: (node: mfm.NodeType<K>) => any } = {
+		const handlers = {
 			bold: (node) => {
-				const el = doc.createElement('b');
-				appendChildren(node.children, el);
-				return el;
+				return `<b>${toHtml(node.children)}</b>`;
 			},
 
 			small: (node) => {
-				const el = doc.createElement('small');
-				appendChildren(node.children, el);
-				return el;
+				return `<small>${toHtml(node.children)}</small>`;
 			},
 
 			strike: (node) => {
-				const el = doc.createElement('del');
-				appendChildren(node.children, el);
-				return el;
+				return `<del>${toHtml(node.children)}</del>`;
 			},
 
 			italic: (node) => {
-				const el = doc.createElement('i');
-				appendChildren(node.children, el);
-				return el;
+				return `<i>${toHtml(node.children)}</i>`;
 			},
 
 			fn: (node) => {
@@ -323,10 +307,7 @@ export class MfmService {
 						const text = node.children[0].type === 'text' ? node.children[0].props.text : '';
 						try {
 							const date = new Date(parseInt(text, 10) * 1000);
-							const el = doc.createElement('time');
-							el.setAttribute('datetime', date.toISOString());
-							el.textContent = date.toISOString();
-							return el;
+							return `<time datetime="${escapeHtml(date.toISOString())}">${escapeHtml(date.toISOString())}</time>`;
 						} catch (err) {
 							return fnDefault(node);
 						}
@@ -336,21 +317,9 @@ export class MfmService {
 						if (node.children.length === 1) {
 							const child = node.children[0];
 							const text = child.type === 'text' ? child.props.text : '';
-							const rubyEl = doc.createElement('ruby');
-							const rtEl = doc.createElement('rt');
 
-							// ruby未対応のHTMLサニタイザーを通したときにルビが「劉備（りゅうび）」となるようにする
-							const rpStartEl = doc.createElement('rp');
-							rpStartEl.appendChild(doc.createTextNode('('));
-							const rpEndEl = doc.createElement('rp');
-							rpEndEl.appendChild(doc.createTextNode(')'));
-
-							rubyEl.appendChild(doc.createTextNode(text.split(' ')[0]));
-							rtEl.appendChild(doc.createTextNode(text.split(' ')[1]));
-							rubyEl.appendChild(rpStartEl);
-							rubyEl.appendChild(rtEl);
-							rubyEl.appendChild(rpEndEl);
-							return rubyEl;
+							// ruby未対応のHTMLサニタイザーを通したときにルビが「対象テキスト（ルビテキスト）」にフォールバックするようにする
+							return `<ruby>${escapeHtml(text.split(' ')[0])}<rp>(</rp><rt>${escapeHtml(text.split(' ')[1])}</rt><rp>)</rp></ruby>`;
 						} else {
 							const rt = node.children.at(-1);
 
@@ -359,21 +328,9 @@ export class MfmService {
 							}
 
 							const text = rt.type === 'text' ? rt.props.text : '';
-							const rubyEl = doc.createElement('ruby');
-							const rtEl = doc.createElement('rt');
 
-							// ruby未対応のHTMLサニタイザーを通したときにルビが「劉備（りゅうび）」となるようにする
-							const rpStartEl = doc.createElement('rp');
-							rpStartEl.appendChild(doc.createTextNode('('));
-							const rpEndEl = doc.createElement('rp');
-							rpEndEl.appendChild(doc.createTextNode(')'));
-
-							appendChildren(node.children.slice(0, node.children.length - 1), rubyEl);
-							rtEl.appendChild(doc.createTextNode(text.trim()));
-							rubyEl.appendChild(rpStartEl);
-							rubyEl.appendChild(rtEl);
-							rubyEl.appendChild(rpEndEl);
-							return rubyEl;
+							// ruby未対応のHTMLサニタイザーを通したときにルビが「対象テキスト（ルビテキスト）」にフォールバックするようにする
+							return `<ruby>${toHtml(node.children.slice(0, node.children.length - 1))}<rp>(</rp><rt>${escapeHtml(text.trim())}</rt><rp>)</rp></ruby>`;
 						}
 					}
 
@@ -384,125 +341,98 @@ export class MfmService {
 			},
 
 			blockCode: (node) => {
-				const pre = doc.createElement('pre');
-				const inner = doc.createElement('code');
-				inner.textContent = node.props.code;
-				pre.appendChild(inner);
-				return pre;
+				return `<pre><code>${escapeHtml(node.props.code)}</code></pre>`;
 			},
 
 			center: (node) => {
-				const el = doc.createElement('div');
-				appendChildren(node.children, el);
-				return el;
+				return `<div style="text-align: center;">${toHtml(node.children)}</div>`;
 			},
 
 			emojiCode: (node) => {
-				return doc.createTextNode(`\u200B:${node.props.name}:\u200B`);
+				return `\u200B:${escapeHtml(node.props.name)}:\u200B`;
 			},
 
 			unicodeEmoji: (node) => {
-				return doc.createTextNode(node.props.emoji);
+				return node.props.emoji;
 			},
 
 			hashtag: (node) => {
-				const a = doc.createElement('a');
-				a.setAttribute('href', `${this.config.url}/tags/${node.props.hashtag}`);
-				a.textContent = `#${node.props.hashtag}`;
-				a.setAttribute('rel', 'tag');
-				return a;
+				return `<a href="${escapeHtml(`${this.config.url}/tags/${encodeURIComponent(node.props.hashtag)}`)}" rel="tag">#${escapeHtml(node.props.hashtag)}</a>`;
 			},
 
 			inlineCode: (node) => {
-				const el = doc.createElement('code');
-				el.textContent = node.props.code;
-				return el;
+				return `<code>${escapeHtml(node.props.code)}</code>`;
 			},
 
 			mathInline: (node) => {
-				const el = doc.createElement('code');
-				el.textContent = node.props.formula;
-				return el;
+				return `<code>${escapeHtml(node.props.formula)}</code>`;
 			},
 
 			mathBlock: (node) => {
-				const el = doc.createElement('code');
-				el.textContent = node.props.formula;
-				return el;
+				return `<pre><code>${escapeHtml(node.props.formula)}</code></pre>`;
 			},
 
 			link: (node) => {
-				const a = doc.createElement('a');
-				a.setAttribute('href', node.props.url);
-				appendChildren(node.children, a);
-				return a;
+				try {
+					const url = new URL(node.props.url);
+					return `<a href="${escapeHtml(url.href)}">${toHtml(node.children)}</a>`;
+				} catch (err) {
+					return `[${toHtml(node.children)}](${escapeHtml(node.props.url)})`;
+				}
 			},
 
 			mention: (node) => {
-				const a = doc.createElement('a');
 				const { username, host, acct } = node.props;
 				const remoteUserInfo = mentionedRemoteUsers.find(remoteUser => remoteUser.username.toLowerCase() === username.toLowerCase() && remoteUser.host?.toLowerCase() === host?.toLowerCase());
-				a.setAttribute('href', remoteUserInfo
+				const href = remoteUserInfo
 					? (remoteUserInfo.url ? remoteUserInfo.url : remoteUserInfo.uri)
-					: `${this.config.url}/${acct.endsWith(`@${this.config.url}`) ? acct.substring(0, acct.length - this.config.url.length - 1) : acct}`);
-				a.className = 'u-url mention';
-				a.textContent = acct;
-				return a;
+					: `${this.config.url}/${acct.endsWith(`@${this.config.url}`) ? acct.substring(0, acct.length - this.config.url.length - 1) : acct}`;
+				try {
+					const url = new URL(href);
+					return `<a href="${escapeHtml(url.href)}" class="u-url mention">${escapeHtml(acct)}</a>`;
+				} catch (err) {
+					return escapeHtml(acct);
+				}
 			},
 
 			quote: (node) => {
-				const el = doc.createElement('blockquote');
-				appendChildren(node.children, el);
-				return el;
+				return `<blockquote>${toHtml(node.children)}</blockquote>`;
 			},
 
 			text: (node) => {
 				if (!node.props.text.match(/[\r\n]/)) {
-					return doc.createTextNode(node.props.text);
+					return escapeHtml(node.props.text);
 				}
 
-				const el = doc.createElement('span');
-				const nodes = node.props.text.split(/\r\n|\r|\n/).map(x => doc.createTextNode(x));
+				let html = '';
 
-				for (const x of intersperse<FIXME | 'br'>('br', nodes)) {
-					el.appendChild(x === 'br' ? doc.createElement('br') : x);
+				const lines = node.props.text.split(/\r\n|\r|\n/).map(x => escapeHtml(x));
+
+				for (const x of intersperse<FIXME | 'br'>('br', lines)) {
+					html += x === 'br' ? '<br />' : x;
 				}
 
-				return el;
+				return html;
 			},
 
 			url: (node) => {
-				const a = doc.createElement('a');
-				a.setAttribute('href', node.props.url);
-				a.textContent = node.props.url;
-				return a;
+				try {
+					const url = new URL(node.props.url);
+					return `<a href="${escapeHtml(url.href)}">${escapeHtml(node.props.url)}</a>`;
+				} catch (err) {
+					return escapeHtml(node.props.url);
+				}
 			},
 
 			search: (node) => {
-				const a = doc.createElement('a');
-				a.setAttribute('href', `https://www.google.com/search?q=${node.props.query}`);
-				a.textContent = node.props.content;
-				return a;
+				return `<a href="${escapeHtml(`https://www.google.com/search?q=${encodeURIComponent(node.props.query)}`)}">${escapeHtml(node.props.content)}</a>`;
 			},
 
 			plain: (node) => {
-				const el = doc.createElement('span');
-				appendChildren(node.children, el);
-				return el;
+				return `<span>${toHtml(node.children)}</span>`;
 			},
-		};
+		} satisfies { [K in mfm.MfmNode['type']]: (node: mfm.NodeType<K>) => string } as { [K in mfm.MfmNode['type']]: (node: mfm.MfmNode) => string };
 
-		appendChildren(nodes, body);
-
-		for (const additionalAppender of additionalAppenders) {
-			additionalAppender(doc, body);
-		}
-
-		// Remove the unnecessary namespace
-		const serialized = new XMLSerializer().serializeToString(body).replace(/^\s*<p xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\">/, '<p>');
-
-		happyDOM.close().catch(err => {});
-
-		return serialized;
+		return `${toHtml(nodes)}${extraHtml ?? ''}`;
 	}
 }
diff --git a/packages/backend/src/core/activitypub/ApMfmService.ts b/packages/backend/src/core/activitypub/ApMfmService.ts
index f4c07e472c..a928ed5ccf 100644
--- a/packages/backend/src/core/activitypub/ApMfmService.ts
+++ b/packages/backend/src/core/activitypub/ApMfmService.ts
@@ -5,7 +5,7 @@
 
 import { Injectable } from '@nestjs/common';
 import * as mfm from 'mfm-js';
-import { MfmService, Appender } from '@/core/MfmService.js';
+import { MfmService } from '@/core/MfmService.js';
 import type { MiNote } from '@/models/Note.js';
 import { bindThis } from '@/decorators.js';
 import { extractApHashtagObjects } from './models/tag.js';
@@ -25,17 +25,17 @@ export class ApMfmService {
 	}
 
 	@bindThis
-	public getNoteHtml(note: Pick<MiNote, 'text' | 'mentionedRemoteUsers'>, additionalAppender: Appender[] = []) {
+	public getNoteHtml(note: Pick<MiNote, 'text' | 'mentionedRemoteUsers'>, extraHtml: string | null = null) {
 		let noMisskeyContent = false;
 		const srcMfm = (note.text ?? '');
 
 		const parsed = mfm.parse(srcMfm);
 
-		if (!additionalAppender.length && parsed.every(n => ['text', 'unicodeEmoji', 'emojiCode', 'mention', 'hashtag', 'url'].includes(n.type))) {
+		if (extraHtml == null && parsed.every(n => ['text', 'unicodeEmoji', 'emojiCode', 'mention', 'hashtag', 'url'].includes(n.type))) {
 			noMisskeyContent = true;
 		}
 
-		const content = this.mfmService.toHtml(parsed, JSON.parse(note.mentionedRemoteUsers), additionalAppender);
+		const content = this.mfmService.toHtml(parsed, JSON.parse(note.mentionedRemoteUsers), extraHtml);
 
 		return {
 			content,
diff --git a/packages/backend/src/core/activitypub/ApRendererService.ts b/packages/backend/src/core/activitypub/ApRendererService.ts
index 55521d6e3a..4570977c5d 100644
--- a/packages/backend/src/core/activitypub/ApRendererService.ts
+++ b/packages/backend/src/core/activitypub/ApRendererService.ts
@@ -19,7 +19,7 @@ import type { MiEmoji } from '@/models/Emoji.js';
 import type { MiPoll } from '@/models/Poll.js';
 import type { MiPollVote } from '@/models/PollVote.js';
 import { UserKeypairService } from '@/core/UserKeypairService.js';
-import { MfmService, type Appender } from '@/core/MfmService.js';
+import { MfmService } from '@/core/MfmService.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { DriveFileEntityService } from '@/core/entities/DriveFileEntityService.js';
 import type { MiUserKeypair } from '@/models/UserKeypair.js';
@@ -28,6 +28,7 @@ import { bindThis } from '@/decorators.js';
 import { CustomEmojiService } from '@/core/CustomEmojiService.js';
 import { IdService } from '@/core/IdService.js';
 import { UtilityService } from '@/core/UtilityService.js';
+import { escapeHtml } from '@/misc/escape-html.js';
 import { JsonLdService } from './JsonLdService.js';
 import { ApMfmService } from './ApMfmService.js';
 import { CONTEXT } from './misc/contexts.js';
@@ -384,7 +385,7 @@ export class ApRendererService {
 			inReplyTo = null;
 		}
 
-		let quote;
+		let quote: string | undefined;
 
 		if (note.renoteId) {
 			const renote = await this.notesRepository.findOneBy({ id: note.renoteId });
@@ -430,29 +431,18 @@ export class ApRendererService {
 			poll = await this.pollsRepository.findOneBy({ noteId: note.id });
 		}
 
-		const apAppend: Appender[] = [];
+		let extraHtml: string | null = null;
 
-		if (quote) {
+		if (quote != null) {
 			// Append quote link as `<br><br><span class="quote-inline">RE: <a href="...">...</a></span>`
-			// the claas name `quote-inline` is used in non-misskey clients for styling quote notes.
+			// the class name `quote-inline` is used in non-misskey clients for styling quote notes.
 			// For compatibility, the span part should be kept as possible.
-			apAppend.push((doc, body) => {
-				body.appendChild(doc.createElement('br'));
-				body.appendChild(doc.createElement('br'));
-				const span = doc.createElement('span');
-				span.className = 'quote-inline';
-				span.appendChild(doc.createTextNode('RE: '));
-				const link = doc.createElement('a');
-				link.setAttribute('href', quote);
-				link.textContent = quote;
-				span.appendChild(link);
-				body.appendChild(span);
-			});
+			extraHtml = `<br><br><span class="quote-inline">RE: <a href="${escapeHtml(quote)}">${escapeHtml(quote)}</a></span>`;
 		}
 
 		const summary = note.cw === '' ? String.fromCharCode(0x200B) : note.cw;
 
-		const { content, noMisskeyContent } = this.apMfmService.getNoteHtml(note, apAppend);
+		const { content, noMisskeyContent } = this.apMfmService.getNoteHtml(note, extraHtml);
 
 		const emojis = await this.getEmojis(note.emojis);
 		const apemojis = emojis.filter(emoji => !emoji.localOnly).map(emoji => this.renderEmoji(emoji));
diff --git a/packages/backend/src/core/activitypub/ApRequestService.ts b/packages/backend/src/core/activitypub/ApRequestService.ts
index 61d328ccac..49298a1d22 100644
--- a/packages/backend/src/core/activitypub/ApRequestService.ts
+++ b/packages/backend/src/core/activitypub/ApRequestService.ts
@@ -6,7 +6,7 @@
 import * as crypto from 'node:crypto';
 import { URL } from 'node:url';
 import { Inject, Injectable } from '@nestjs/common';
-import { Window } from 'happy-dom';
+import * as htmlParser from 'node-html-parser';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
 import type { MiUser } from '@/models/User.js';
@@ -215,29 +215,9 @@ export class ApRequestService {
 			_followAlternate === true
 		) {
 			const html = await res.text();
-			const { window, happyDOM } = new Window({
-				settings: {
-					disableJavaScriptEvaluation: true,
-					disableJavaScriptFileLoading: true,
-					disableCSSFileLoading: true,
-					disableComputedStyleRendering: true,
-					handleDisabledFileLoadingAsSuccess: true,
-					navigation: {
-						disableMainFrameNavigation: true,
-						disableChildFrameNavigation: true,
-						disableChildPageNavigation: true,
-						disableFallbackToSetURL: true,
-					},
-					timer: {
-						maxTimeout: 0,
-						maxIntervalTime: 0,
-						maxIntervalIterations: 0,
-					},
-				},
-			});
-			const document = window.document;
+
 			try {
-				document.documentElement.innerHTML = html;
+				const document = htmlParser.parse(html);
 
 				const alternate = document.querySelector('head > link[rel="alternate"][type="application/activity+json"]');
 				if (alternate) {
@@ -248,8 +228,6 @@ export class ApRequestService {
 				}
 			} catch (e) {
 				// something went wrong parsing the HTML, ignore the whole thing
-			} finally {
-				happyDOM.close().catch(err => {});
 			}
 		}
 		//#endregion
diff --git a/packages/backend/src/misc/escape-html.ts b/packages/backend/src/misc/escape-html.ts
new file mode 100644
index 0000000000..819aeeed52
--- /dev/null
+++ b/packages/backend/src/misc/escape-html.ts
@@ -0,0 +1,13 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export function escapeHtml(text: string): string {
+	return text
+		.replace(/&/g, '&amp;')
+		.replace(/</g, '&lt;')
+		.replace(/>/g, '&gt;')
+		.replace(/"/g, '&quot;')
+		.replace(/'/g, '&#039;');
+}
diff --git a/packages/backend/src/server/api/endpoints/i/update.ts b/packages/backend/src/server/api/endpoints/i/update.ts
index 113a09cb14..9971a1ea4d 100644
--- a/packages/backend/src/server/api/endpoints/i/update.ts
+++ b/packages/backend/src/server/api/endpoints/i/update.ts
@@ -7,7 +7,7 @@ import RE2 from 're2';
 import * as mfm from 'mfm-js';
 import { Inject, Injectable } from '@nestjs/common';
 import ms from 'ms';
-import { JSDOM } from 'jsdom';
+import * as htmlParser from 'node-html-parser';
 import { extractCustomEmojisFromMfm } from '@/misc/extract-custom-emojis-from-mfm.js';
 import { extractHashtags } from '@/misc/extract-hashtags.js';
 import * as Acct from '@/misc/acct.js';
@@ -569,16 +569,15 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		try {
 			const html = await this.httpRequestService.getHtml(url);
 
-			const { window } = new JSDOM(html);
-			const doc: Document = window.document;
+			const doc = htmlParser.parse(html);
 
 			const myLink = `${this.config.url}/@${user.username}`;
 
 			const aEls = Array.from(doc.getElementsByTagName('a'));
 			const linkEls = Array.from(doc.getElementsByTagName('link'));
 
-			const includesMyLink = aEls.some(a => a.href === myLink);
-			const includesRelMeLinks = [...aEls, ...linkEls].some(link => link.rel === 'me' && link.href === myLink);
+			const includesMyLink = aEls.some(a => a.attributes.href === myLink);
+			const includesRelMeLinks = [...aEls, ...linkEls].some(link => link.attributes.rel?.split(/\s+/).includes('me') && link.attributes.href === myLink);
 
 			if (includesMyLink || includesRelMeLinks) {
 				await this.userProfilesRepository.createQueryBuilder('profile').update()
@@ -588,8 +587,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 					})
 					.execute();
 			}
-
-			window.close();
 		} catch (err) {
 			// なにもしない
 		}
diff --git a/packages/backend/src/server/oauth/OAuth2ProviderService.ts b/packages/backend/src/server/oauth/OAuth2ProviderService.ts
index cdd7102666..2b0b303b98 100644
--- a/packages/backend/src/server/oauth/OAuth2ProviderService.ts
+++ b/packages/backend/src/server/oauth/OAuth2ProviderService.ts
@@ -6,7 +6,7 @@
 import dns from 'node:dns/promises';
 import { fileURLToPath } from 'node:url';
 import { Inject, Injectable } from '@nestjs/common';
-import { JSDOM } from 'jsdom';
+import * as htmlParser from 'node-html-parser';
 import httpLinkHeader from 'http-link-header';
 import ipaddr from 'ipaddr.js';
 import oauth2orize, { type OAuth2, AuthorizationError, ValidateFunctionArity2, OAuth2Req, MiddlewareRequest } from 'oauth2orize';
@@ -120,9 +120,9 @@ async function discoverClientInformation(logger: Logger, httpRequestService: Htt
 		}
 
 		const text = await res.text();
-		const fragment = JSDOM.fragment(text);
+		const fragment = htmlParser.parse(`<div>${text}</div>`);
 
-		redirectUris.push(...[...fragment.querySelectorAll<HTMLLinkElement>('link[rel=redirect_uri][href]')].map(el => el.href));
+		redirectUris.push(...[...fragment.querySelectorAll('link[rel=redirect_uri][href]')].map(el => el.attributes.href));
 
 		let name = id;
 		let logo: string | null = null;
diff --git a/packages/backend/src/server/web/ClientServerService.ts b/packages/backend/src/server/web/ClientServerService.ts
index f9d904f3cd..fef6a27087 100644
--- a/packages/backend/src/server/web/ClientServerService.ts
+++ b/packages/backend/src/server/web/ClientServerService.ts
@@ -15,7 +15,6 @@ import fastifyStatic from '@fastify/static';
 import fastifyView from '@fastify/view';
 import fastifyProxy from '@fastify/http-proxy';
 import vary from 'vary';
-import htmlSafeJsonStringify from 'htmlescape';
 import type { Config } from '@/config.js';
 import { getNoteSummary } from '@/misc/get-note-summary.js';
 import { DI } from '@/di-symbols.js';
@@ -63,6 +62,20 @@ const frontendViteOut = `${_dirname}/../../../../../built/_frontend_vite_/`;
 const frontendEmbedViteOut = `${_dirname}/../../../../../built/_frontend_embed_vite_/`;
 const tarball = `${_dirname}/../../../../../built/tarball/`;
 
+const ESCAPE_LOOKUP = {
+	'&': '\\u0026',
+	'>': '\\u003e',
+	'<': '\\u003c',
+	'\u2028': '\\u2028',
+	'\u2029': '\\u2029',
+} as Record<string, string>;
+
+const ESCAPE_REGEX = /[&><\u2028\u2029]/g;
+
+function htmlSafeJsonStringify(obj: any): string {
+	return JSON.stringify(obj).replace(ESCAPE_REGEX, x => ESCAPE_LOOKUP[x]);
+}
+
 @Injectable()
 export class ClientServerService {
 	private logger: Logger;
diff --git a/packages/backend/test/e2e/exports.ts b/packages/backend/test/e2e/exports.ts
index 4bcecc9716..1a703b3d36 100644
--- a/packages/backend/test/e2e/exports.ts
+++ b/packages/backend/test/e2e/exports.ts
@@ -16,7 +16,7 @@ describe('export-clips', () => {
 	let bob: misskey.entities.SignupResponse;
 
 	// XXX: Any better way to get the result?
-	async function pollFirstDriveFile() {
+	async function pollFirstDriveFile(): Promise<any> {
 		while (true) {
 			const files = (await api('drive/files', {}, alice)).body;
 			if (!files.length) {
diff --git a/packages/backend/test/e2e/fetch-resource.ts b/packages/backend/test/e2e/fetch-resource.ts
index bef98893c6..f00843de10 100644
--- a/packages/backend/test/e2e/fetch-resource.ts
+++ b/packages/backend/test/e2e/fetch-resource.ts
@@ -73,7 +73,7 @@ describe('Webリソース', () => {
 	};
 
 	const metaTag = (res: SimpleGetResponse, key: string, superkey = 'name'): string => {
-		return res.body.window.document.querySelector('meta[' + superkey + '="' + key + '"]')?.content;
+		return res.body.querySelector('meta[' + superkey + '="' + key + '"]')?.attributes.content;
 	};
 
 	beforeAll(async () => {
diff --git a/packages/backend/test/e2e/oauth.ts b/packages/backend/test/e2e/oauth.ts
index f639f90ea6..96a6311a5a 100644
--- a/packages/backend/test/e2e/oauth.ts
+++ b/packages/backend/test/e2e/oauth.ts
@@ -19,7 +19,7 @@ import {
 	ResourceOwnerPassword,
 } from 'simple-oauth2';
 import pkceChallenge from 'pkce-challenge';
-import { JSDOM } from 'jsdom';
+import * as htmlParser from 'node-html-parser';
 import Fastify, { type FastifyInstance, type FastifyReply } from 'fastify';
 import { api, port, sendEnvUpdateRequest, signup } from '../utils.js';
 import type * as misskey from 'misskey-js';
@@ -73,11 +73,11 @@ const clientConfig: ModuleOptions<'client_id'> = {
 };
 
 function getMeta(html: string): { transactionId: string | undefined, clientName: string | undefined, clientLogo: string | undefined } {
-	const fragment = JSDOM.fragment(html);
+	const doc = htmlParser.parse(`<div>${html}</div>`);
 	return {
-		transactionId: fragment.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:transaction-id"]')?.content,
-		clientName: fragment.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:client-name"]')?.content,
-		clientLogo: fragment.querySelector<HTMLMetaElement>('meta[name="misskey:oauth:client-logo"]')?.content,
+		transactionId: doc.querySelector('meta[name="misskey:oauth:transaction-id"]')?.attributes.content,
+		clientName: doc.querySelector('meta[name="misskey:oauth:client-name"]')?.attributes.content,
+		clientLogo: doc.querySelector('meta[name="misskey:oauth:client-logo"]')?.attributes.content,
 	};
 }
 
@@ -148,7 +148,7 @@ function assertIndirectError(response: Response, error: string): void {
 async function assertDirectError(response: Response, status: number, error: string): Promise<void> {
 	assert.strictEqual(response.status, status);
 
-	const data = await response.json();
+	const data = await response.json() as any;
 	assert.strictEqual(data.error, error);
 }
 
@@ -704,7 +704,7 @@ describe('OAuth', () => {
 		const response = await fetch(new URL('.well-known/oauth-authorization-server', host));
 		assert.strictEqual(response.status, 200);
 
-		const body = await response.json();
+		const body = await response.json() as any;
 		assert.strictEqual(body.issuer, 'http://misskey.local');
 		assert.ok(body.scopes_supported.includes('write:notes'));
 	});
diff --git a/packages/backend/test/unit/ApMfmService.ts b/packages/backend/test/unit/ApMfmService.ts
index e81a321c9b..93efa5d7d3 100644
--- a/packages/backend/test/unit/ApMfmService.ts
+++ b/packages/backend/test/unit/ApMfmService.ts
@@ -9,7 +9,6 @@ import { Test } from '@nestjs/testing';
 import { CoreModule } from '@/core/CoreModule.js';
 import { ApMfmService } from '@/core/activitypub/ApMfmService.js';
 import { GlobalModule } from '@/GlobalModule.js';
-import { MiNote } from '@/models/Note.js';
 
 describe('ApMfmService', () => {
 	let apMfmService: ApMfmService;
@@ -31,7 +30,7 @@ describe('ApMfmService', () => {
 			const { content, noMisskeyContent } = apMfmService.getNoteHtml(note);
 
 			assert.equal(noMisskeyContent, true, 'noMisskeyContent');
-			assert.equal(content, '<p>テキスト <a href="http://misskey.local/tags/タグ" rel="tag">#タグ</a> <a href="http://misskey.local/@mention" class="u-url mention">@mention</a> 🍊 ​:emoji:​ <a href="https://example.com">https://example.com</a></p>', 'content');
+			assert.equal(content, 'テキスト <a href="http://misskey.local/tags/%E3%82%BF%E3%82%B0" rel="tag">#タグ</a> <a href="http://misskey.local/@mention" class="u-url mention">@mention</a> 🍊 ​:emoji:​ <a href="https://example.com/">https://example.com</a>', 'content');
 		});
 
 		test('Provide _misskey_content for MFM', () => {
@@ -43,7 +42,7 @@ describe('ApMfmService', () => {
 			const { content, noMisskeyContent } = apMfmService.getNoteHtml(note);
 
 			assert.equal(noMisskeyContent, false, 'noMisskeyContent');
-			assert.equal(content, '<p><i>foo</i></p>', 'content');
+			assert.equal(content, '<i>foo</i>', 'content');
 		});
 	});
 });
diff --git a/packages/backend/test/unit/MfmService.ts b/packages/backend/test/unit/MfmService.ts
index 7350da3cae..2f5f3745de 100644
--- a/packages/backend/test/unit/MfmService.ts
+++ b/packages/backend/test/unit/MfmService.ts
@@ -24,25 +24,25 @@ describe('MfmService', () => {
 	describe('toHtml', () => {
 		test('br', () => {
 			const input = 'foo\nbar\nbaz';
-			const output = '<p><span>foo<br />bar<br />baz</span></p>';
+			const output = 'foo<br />bar<br />baz';
 			assert.equal(mfmService.toHtml(mfm.parse(input)), output);
 		});
 
 		test('br alt', () => {
 			const input = 'foo\r\nbar\rbaz';
-			const output = '<p><span>foo<br />bar<br />baz</span></p>';
+			const output = 'foo<br />bar<br />baz';
 			assert.equal(mfmService.toHtml(mfm.parse(input)), output);
 		});
 
 		test('Do not generate unnecessary span', () => {
 			const input = 'foo $[tada bar]';
-			const output = '<p>foo <i>bar</i></p>';
+			const output = 'foo <i>bar</i>';
 			assert.equal(mfmService.toHtml(mfm.parse(input)), output);
 		});
 
 		test('escape', () => {
 			const input = '```\n<p>Hello, world!</p>\n```';
-			const output = '<p><pre><code>&lt;p&gt;Hello, world!&lt;/p&gt;</code></pre></p>';
+			const output = '<pre><code>&lt;p&gt;Hello, world!&lt;/p&gt;</code></pre>';
 			assert.equal(mfmService.toHtml(mfm.parse(input)), output);
 		});
 	});
@@ -118,7 +118,7 @@ describe('MfmService', () => {
 			assert.deepStrictEqual(mfmService.fromHtml('<p>a <ruby>Misskey<rp>(</rp><rt>ミス キー</rt><rp>)</rp> b</ruby> c</p>'), 'a Misskey(ミス キー) b c');
 			assert.deepStrictEqual(
 				mfmService.fromHtml('<p>a <ruby>Misskey<rp>(</rp><rt>ミスキー</rt><rp>)</rp>Misskey<rp>(</rp><rt>ミス キー</rt><rp>)</rp>Misskey<rp>(</rp><rt>ミスキー</rt><rp>)</rp></ruby> b</p>'),
-				'a Misskey(ミスキー)Misskey(ミス キー)Misskey(ミスキー) b'
+				'a Misskey(ミスキー)Misskey(ミス キー)Misskey(ミスキー) b',
 			);
 		});
 
diff --git a/packages/backend/test/utils.ts b/packages/backend/test/utils.ts
index daae7b9643..ecca28b5af 100644
--- a/packages/backend/test/utils.ts
+++ b/packages/backend/test/utils.ts
@@ -10,8 +10,8 @@ import { randomUUID } from 'node:crypto';
 import { inspect } from 'node:util';
 import WebSocket, { ClientOptions } from 'ws';
 import fetch, { File, RequestInit, type Headers } from 'node-fetch';
+import * as htmlParser from 'node-html-parser';
 import { DataSource } from 'typeorm';
-import { JSDOM } from 'jsdom';
 import { type Response } from 'node-fetch';
 import Fastify from 'fastify';
 import { entities } from '../src/postgres.js';
@@ -468,7 +468,7 @@ export function makeStreamCatcher<T>(
 
 export type SimpleGetResponse = {
 	status: number,
-	body: any | JSDOM | null,
+	body: any | null,
 	type: string | null,
 	location: string | null
 };
@@ -499,7 +499,7 @@ export const simpleGet = async (path: string, accept = '*/*', cookie: any = unde
 
 	const body =
 		jsonTypes.includes(res.headers.get('content-type') ?? '') ? await res.json() :
-		htmlTypes.includes(res.headers.get('content-type') ?? '') ? new JSDOM(await res.text()) :
+		htmlTypes.includes(res.headers.get('content-type') ?? '') ? htmlParser.parse(await res.text()) :
 		await bodyExtractor(res);
 
 	return {
diff --git a/packages/misskey-js/package.json b/packages/misskey-js/package.json
index a961f2a25c..c66f421f72 100644
--- a/packages/misskey-js/package.json
+++ b/packages/misskey-js/package.json
@@ -1,7 +1,7 @@
 {
 	"type": "module",
 	"name": "misskey-js",
-	"version": "2025.11.1",
+	"version": "2025.11.2-alpha.0",
 	"description": "Misskey SDK for JavaScript",
 	"license": "MIT",
 	"main": "./built/index.js",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d3b9fcd32a..7fd1334acf 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -246,15 +246,9 @@ importers:
       got:
         specifier: 14.6.4
         version: 14.6.4
-      happy-dom:
-        specifier: 20.0.10
-        version: 20.0.10
       hpagent:
         specifier: 1.2.0
         version: 1.2.0
-      htmlescape:
-        specifier: 1.1.1
-        version: 1.1.1
       http-link-header:
         specifier: 1.1.3
         version: 1.1.3
@@ -273,9 +267,6 @@ importers:
       js-yaml:
         specifier: 4.1.1
         version: 4.1.1
-      jsdom:
-        specifier: 26.1.0
-        version: 26.1.0(bufferutil@4.0.9)(utf-8-validate@6.0.5)
       json5:
         specifier: 2.2.3
         version: 2.2.3
@@ -318,6 +309,9 @@ importers:
       node-fetch:
         specifier: 3.3.2
         version: 3.3.2
+      node-html-parser:
+        specifier: 7.0.1
+        version: 7.0.1
       nodemailer:
         specifier: 7.0.10
         version: 7.0.10
@@ -339,9 +333,6 @@ importers:
       otpauth:
         specifier: 9.4.1
         version: 9.4.1
-      parse5:
-        specifier: 7.3.0
-        version: 7.3.0
       pg:
         specifier: 8.16.3
         version: 8.16.3
@@ -475,9 +466,6 @@ importers:
       '@types/fluent-ffmpeg':
         specifier: 2.1.28
         version: 2.1.28
-      '@types/htmlescape':
-        specifier: 1.1.3
-        version: 1.1.3
       '@types/http-link-header':
         specifier: 1.0.7
         version: 1.0.7
@@ -487,9 +475,6 @@ importers:
       '@types/js-yaml':
         specifier: 4.0.9
         version: 4.0.9
-      '@types/jsdom':
-        specifier: 21.1.7
-        version: 21.1.7
       '@types/jsonld':
         specifier: 1.5.15
         version: 1.5.15
@@ -1605,9 +1590,6 @@ packages:
   '@apm-js-collab/tracing-hooks@0.3.1':
     resolution: {integrity: sha512-Vu1CbmPURlN5fTboVuKMoJjbO5qcq9fA5YXpskx3dXe/zTBvjODFoerw+69rVBlRLrJpwPqSDqEuJDEKIrTldw==}
 
-  '@asamuzakjp/css-color@3.2.0':
-    resolution: {integrity: sha512-K1A6z8tS3XsmCMM86xoWdn7Fkdn9m6RSVtocUrJYIwZnFVkng/PvkEoWtOWmP+Scc6saYWHWZYbndEEXxl24jw==}
-
   '@asamuzakjp/css-color@4.1.0':
     resolution: {integrity: sha512-9xiBAtLn4aNsa4mDnpovJvBn72tNEIACyvlqaNJ+ADemR+yeMJWnBudOi2qGDviJa7SwcDOU/TRh5dnET7qk0w==}
 
@@ -4662,9 +4644,6 @@ packages:
   '@types/hast@3.0.4':
     resolution: {integrity: sha512-WPs+bbQw5aCj+x6laNGWLH3wviHtoCv/P3+otBhbOhJgG8qtpdAMlTCxLtsTWA7LH1Oh/bFCHsBn0TPS5m30EQ==}
 
-  '@types/htmlescape@1.1.3':
-    resolution: {integrity: sha512-tuC81YJXGUe0q8WRtBNW+uyx79rkkzWK651ALIXXYq5/u/IxjX4iHneGF2uUqzsNp+F+9J2mFZOv9jiLTtIq0w==}
-
   '@types/http-cache-semantics@4.0.4':
     resolution: {integrity: sha512-1m0bIFVc7eJWyve9S0RnuRgcQqF/Xd5QsUZAZeQFr1Q3/p9JWoQQEqmVy+DPTNpGXwhgIetAoYF8JSc33q29QA==}
 
@@ -4689,9 +4668,6 @@ packages:
   '@types/js-yaml@4.0.9':
     resolution: {integrity: sha512-k4MGaQl5TGo/iipqb2UDG2UwjXziSWkh0uysQelTlJpX1qGlpUZYm8PnO4DxG1qBomtJUdYJ6qR6xdIah10JLg==}
 
-  '@types/jsdom@21.1.7':
-    resolution: {integrity: sha512-yOriVnggzrnQ3a9OKOCxaVuSug3w3/SbOj5i7VwXWZEyUNl3bLF9V3MfxGbZKuwqJOQyRfqXyROBB1CoZLFWzA==}
-
   '@types/json-schema@7.0.15':
     resolution: {integrity: sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==}
 
@@ -4878,9 +4854,6 @@ packages:
   '@types/tmp@0.2.6':
     resolution: {integrity: sha512-chhaNf2oKHlRkDGt+tiKE2Z5aJ6qalm7Z9rlLdBwmOiAAf09YQvvoLXjWK4HWPF1xU/fqvMgfNfpVoBscA/tKA==}
 
-  '@types/tough-cookie@4.0.5':
-    resolution: {integrity: sha512-/Ad8+nIOV7Rl++6f1BdKxFSMgmoqEoYbHRpPcx3JEfv8VRsQe9Z4mCXeJBzxs7mbHY/XOZZuXlRNfhpVPbs6ZA==}
-
   '@types/unist@3.0.3':
     resolution: {integrity: sha512-ko/gIFJRv177XgZsZcBwnqJN5x/Gien8qNOn0D5bQU/zAzVf9Zt3BlcUiLqhV9y4ARk0GbT3tnUiPNgnTXzc/Q==}
 
@@ -6150,10 +6123,6 @@ packages:
     resolution: {integrity: sha512-0LrrStPOdJj+SPCCrGhzryycLjwcgUSHBtxNA8aIDxf0GLsRh1cKYhB00Gd1lDOS4yGH69+SNn13+TWbVHETFQ==}
     engines: {node: ^10 || ^12.20.0 || ^14.13.0 || >=15.0.0, npm: '>=7.0.0'}
 
-  cssstyle@4.6.0:
-    resolution: {integrity: sha512-2z+rWdzbbSZv6/rhtvzvqeZQHrBaqgogqt85sqFNbabZOuFbCVFb8kPeEtZjiKkbrm395irpNKiYeFeLiQnFPg==}
-    engines: {node: '>=18'}
-
   cssstyle@5.3.3:
     resolution: {integrity: sha512-OytmFH+13/QXONJcC75QNdMtKpceNk3u8ThBjyyYjkEcy/ekBwR1mMAuNvi3gdBPW3N5TlCzQ0WZw8H0lN/bDw==}
     engines: {node: '>=20'}
@@ -6174,10 +6143,6 @@ packages:
     resolution: {integrity: sha512-0R9ikRb668HB7QDxT1vkpuUBtqc53YyAwMwGeUFKRojY/NWKvdZ+9UYtRfGmhqNbRkTSVpMbmyhXipFFv2cb/A==}
     engines: {node: '>= 12'}
 
-  data-urls@5.0.0:
-    resolution: {integrity: sha512-ZYP5VBHshaDAiVZxjbRVcFJpc+4xGgT0bK3vzy1HLN8jTO975HEbuYzZJcHoQEY5K1a0z8YayJkyVETa08eNTg==}
-    engines: {node: '>=18'}
-
   data-urls@6.0.0:
     resolution: {integrity: sha512-BnBS08aLUM+DKamupXs3w2tJJoqU+AkaE/+6vQxi/G/DPmIZFJJp9Dkb1kM03AZx8ADehDUZgsNxju3mPXZYIA==}
     engines: {node: '>=20'}
@@ -7277,10 +7242,6 @@ packages:
   html-void-elements@3.0.0:
     resolution: {integrity: sha512-bEqo66MRXsUGxWHV5IP0PUiAWwoEjba4VCzg0LjFJBpchPaTfyfCKTG6bc5F8ucKec3q5y6qOdGyYTSBEvhCrg==}
 
-  htmlescape@1.1.1:
-    resolution: {integrity: sha512-eVcrzgbR4tim7c7soKQKtxa/kQM4TzjnlU83rcZ9bHU6t31ehfV7SktN6McWgwPWg+JYMA/O3qpGxBvFq1z2Jg==}
-    engines: {node: '>=0.10'}
-
   htmlparser2@10.0.0:
     resolution: {integrity: sha512-TwAZM+zE5Tq3lrEHvOlvwgj1XLWQCtaaibSN11Q+gGBAS7Y1uZSWwXXRe4iF6OXnaq1riyQAPFOBtYc77Mxq0g==}
 
@@ -7909,15 +7870,6 @@ packages:
     resolution: {integrity: sha512-/kmVISmrwVwtyYU40iQUOp3SUPk2dhNCMsZBQX0R1/jZ8maaXJ/oZIzUOiyOqcgtLnETFKYChbJ5iDC/eWmFHg==}
     engines: {node: '>=0.1.90'}
 
-  jsdom@26.1.0:
-    resolution: {integrity: sha512-Cvc9WUhxSMEo4McES3P7oK3QaXldCfNWp7pl2NNeiIFlCoLr3kfq9kb1fxftiwk1FLV7CvpvDfonxtzUDeSOPg==}
-    engines: {node: '>=18'}
-    peerDependencies:
-      canvas: ^3.0.0
-    peerDependenciesMeta:
-      canvas:
-        optional: true
-
   jsdom@27.2.0:
     resolution: {integrity: sha512-454TI39PeRDW1LgpyLPyURtB4Zx1tklSr6+OFOipsxGUH1WMTvk6C65JQdrj455+DP2uJ1+veBEHTGFKWVLFoA==}
     engines: {node: ^20.19.0 || ^22.12.0 || >=24.0.0}
@@ -8660,6 +8612,9 @@ packages:
     engines: {node: ^18.17.0 || >=20.5.0}
     hasBin: true
 
+  node-html-parser@7.0.1:
+    resolution: {integrity: sha512-KGtmPY2kS0thCWGK0VuPyOS+pBKhhe8gXztzA2ilAOhbUbxa9homF1bOyKvhGzMLXUoRds9IOmr/v5lr/lqNmA==}
+
   node-int64@0.4.0:
     resolution: {integrity: sha512-O5lz91xSOeoXP6DulyHfllpq+Eg00MWitZIbtPfoSEvqIHdl5gfcY6hYzDWnj0qD5tz52PI08u9qUvSVeUBeHw==}
 
@@ -8734,9 +8689,6 @@ packages:
   nth-check@2.1.1:
     resolution: {integrity: sha512-lqjrjmaOoAnWfMmBPL+XNnynZh2+swxiX3WUE0s4yEHI6m+AwrK2UZOimIRl3X/4QctVqS8AiZjFqyOGrMXb/w==}
 
-  nwsapi@2.2.22:
-    resolution: {integrity: sha512-ujSMe1OWVn55euT1ihwCI1ZcAaAU3nxUiDwfDQldc51ZXaB9m2AyOn6/jh1BLe2t/G8xd6uKG1UBF2aZJeg2SQ==}
-
   oauth2orize-pkce@0.1.2:
     resolution: {integrity: sha512-grto2UYhXHi9GLE3IBgBBbV87xci55+bCyjpVuxKyzol6I5Rg0K1MiTuXE+JZk54R86SG2wqXODMiZYHraPpxw==}
 
@@ -9734,9 +9686,6 @@ packages:
     resolution: {integrity: sha512-nLTrUKm2UyiL7rlhapu/Zl45FwNgkZGaCpZbIHajDYgwlJCOzLSk+cIPAnsEqV955GjILJnKbdQC1nVPz+gAYQ==}
     engines: {node: '>= 18'}
 
-  rrweb-cssom@0.8.0:
-    resolution: {integrity: sha512-guoltQEx+9aMf2gDZ0s62EcV8lsXR+0w8915TC3ITdn2YueuNjdAYh/levpU9nFaoChh9RUS5ZdQMrKfVEN9tw==}
-
   rss-parser@3.13.0:
     resolution: {integrity: sha512-7jWUBV5yGN3rqMMj7CZufl/291QAhvrrGpDNE4k/02ZchL0npisiYYqULF71jCEKoIiHvK/Q2e6IkDwPziT7+w==}
 
@@ -10507,10 +10456,6 @@ packages:
   tr46@0.0.3:
     resolution: {integrity: sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==}
 
-  tr46@5.1.1:
-    resolution: {integrity: sha512-hdF5ZgjTqgAntKkklYw0R03MG2x/bSzTtkxmIRw/sTNV8YXsCJ1tfLAX23lhxhHJlEf3CRCOCGGWw3vI3GaSPw==}
-    engines: {node: '>=18'}
-
   tr46@6.0.0:
     resolution: {integrity: sha512-bLVMLPtstlZ4iMQHpFHTR7GAGj2jxi8Dg0s2h2MafAE4uSWF98FC/3MomU51iQAMf8/qDUbKWf5GxuvvVcXEhw==}
     engines: {node: '>=20'}
@@ -11132,10 +11077,6 @@ packages:
   webidl-conversions@3.0.1:
     resolution: {integrity: sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==}
 
-  webidl-conversions@7.0.0:
-    resolution: {integrity: sha512-VwddBukDzu71offAQR975unBIGqfKZpM+8ZX6ySk8nYhVoo5CYaZyzt3YBvYtRtO+aoGlqxPg/B87NGVZ/fu6g==}
-    engines: {node: '>=12'}
-
   webidl-conversions@8.0.0:
     resolution: {integrity: sha512-n4W4YFyz5JzOfQeA8oN7dUYpR+MBP3PIUsn2jLjWXwK5ASUzt0Jc/A5sAUZoCYFJRGF0FBKJ+1JjN43rNdsQzA==}
     engines: {node: '>=20'}
@@ -11155,10 +11096,6 @@ packages:
     resolution: {integrity: sha512-QaKxh0eNIi2mE9p2vEdzfagOKHCcj1pJ56EEHGQOVxp8r9/iszLUUV7v89x9O1p/T+NlTM5W7jW6+cz4Fq1YVg==}
     engines: {node: '>=18'}
 
-  whatwg-url@14.2.0:
-    resolution: {integrity: sha512-De72GdQZzNTUBBChsXueQUnPKDkg/5A5zp7pFDuQAj5UFoENpiACU0wlCvzpAGnTkj++ihpKwKyYewn/XNUbKw==}
-    engines: {node: '>=18'}
-
   whatwg-url@15.1.0:
     resolution: {integrity: sha512-2ytDk0kiEj/yu90JOAp44PVPUkO9+jVhyf+SybKlRHSDlvOOZhdPIrr7xTH64l4WixO2cP+wQIcgujkGBPPz6g==}
     engines: {node: '>=20'}
@@ -11413,14 +11350,6 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@asamuzakjp/css-color@3.2.0':
-    dependencies:
-      '@csstools/css-calc': 2.1.4(@csstools/css-parser-algorithms@3.0.5(@csstools/css-tokenizer@3.0.4))(@csstools/css-tokenizer@3.0.4)
-      '@csstools/css-color-parser': 3.1.0(@csstools/css-parser-algorithms@3.0.5(@csstools/css-tokenizer@3.0.4))(@csstools/css-tokenizer@3.0.4)
-      '@csstools/css-parser-algorithms': 3.0.5(@csstools/css-tokenizer@3.0.4)
-      '@csstools/css-tokenizer': 3.0.4
-      lru-cache: 10.4.3
-
   '@asamuzakjp/css-color@4.1.0':
     dependencies:
       '@csstools/css-calc': 2.1.4(@csstools/css-parser-algorithms@3.0.5(@csstools/css-tokenizer@3.0.4))(@csstools/css-tokenizer@3.0.4)
@@ -12242,12 +12171,14 @@ snapshots:
 
   '@cropper/utils@2.1.0': {}
 
-  '@csstools/color-helpers@5.1.0': {}
+  '@csstools/color-helpers@5.1.0':
+    optional: true
 
   '@csstools/css-calc@2.1.4(@csstools/css-parser-algorithms@3.0.5(@csstools/css-tokenizer@3.0.4))(@csstools/css-tokenizer@3.0.4)':
     dependencies:
       '@csstools/css-parser-algorithms': 3.0.5(@csstools/css-tokenizer@3.0.4)
       '@csstools/css-tokenizer': 3.0.4
+    optional: true
 
   '@csstools/css-color-parser@3.1.0(@csstools/css-parser-algorithms@3.0.5(@csstools/css-tokenizer@3.0.4))(@csstools/css-tokenizer@3.0.4)':
     dependencies:
@@ -12255,15 +12186,18 @@ snapshots:
       '@csstools/css-calc': 2.1.4(@csstools/css-parser-algorithms@3.0.5(@csstools/css-tokenizer@3.0.4))(@csstools/css-tokenizer@3.0.4)
       '@csstools/css-parser-algorithms': 3.0.5(@csstools/css-tokenizer@3.0.4)
       '@csstools/css-tokenizer': 3.0.4
+    optional: true
 
   '@csstools/css-parser-algorithms@3.0.5(@csstools/css-tokenizer@3.0.4)':
     dependencies:
       '@csstools/css-tokenizer': 3.0.4
+    optional: true
 
   '@csstools/css-syntax-patches-for-csstree@1.0.17':
     optional: true
 
-  '@csstools/css-tokenizer@3.0.4': {}
+  '@csstools/css-tokenizer@3.0.4':
+    optional: true
 
   '@cypress/request@3.0.9':
     dependencies:
@@ -15180,8 +15114,6 @@ snapshots:
     dependencies:
       '@types/unist': 3.0.3
 
-  '@types/htmlescape@1.1.3': {}
-
   '@types/http-cache-semantics@4.0.4': {}
 
   '@types/http-errors@2.0.5': {}
@@ -15207,12 +15139,6 @@ snapshots:
 
   '@types/js-yaml@4.0.9': {}
 
-  '@types/jsdom@21.1.7':
-    dependencies:
-      '@types/node': 24.10.1
-      '@types/tough-cookie': 4.0.5
-      parse5: 7.3.0
-
   '@types/json-schema@7.0.15': {}
 
   '@types/json5@0.0.29': {}
@@ -15401,8 +15327,6 @@ snapshots:
 
   '@types/tmp@0.2.6': {}
 
-  '@types/tough-cookie@4.0.5': {}
-
   '@types/unist@3.0.3': {}
 
   '@types/uuid@9.0.8': {}
@@ -16987,11 +16911,6 @@ snapshots:
     dependencies:
       css-tree: 2.2.1
 
-  cssstyle@4.6.0:
-    dependencies:
-      '@asamuzakjp/css-color': 3.2.0
-      rrweb-cssom: 0.8.0
-
   cssstyle@5.3.3:
     dependencies:
       '@asamuzakjp/css-color': 4.1.0
@@ -17053,11 +16972,6 @@ snapshots:
 
   data-uri-to-buffer@4.0.1: {}
 
-  data-urls@5.0.0:
-    dependencies:
-      whatwg-mimetype: 4.0.0
-      whatwg-url: 14.2.0
-
   data-urls@6.0.0:
     dependencies:
       whatwg-mimetype: 4.0.0
@@ -17123,7 +17037,8 @@ snapshots:
 
   decamelize@1.2.0: {}
 
-  decimal.js@10.6.0: {}
+  decimal.js@10.6.0:
+    optional: true
 
   decode-bmp@0.2.1:
     dependencies:
@@ -18468,6 +18383,7 @@ snapshots:
   html-encoding-sniffer@4.0.0:
     dependencies:
       whatwg-encoding: 3.1.1
+    optional: true
 
   html-entities@2.6.0: {}
 
@@ -18475,8 +18391,6 @@ snapshots:
 
   html-void-elements@3.0.0: {}
 
-  htmlescape@1.1.1: {}
-
   htmlparser2@10.0.0:
     dependencies:
       domelementtype: 2.3.0
@@ -18789,7 +18703,8 @@ snapshots:
 
   is-plain-object@5.0.0: {}
 
-  is-potential-custom-element-name@1.0.1: {}
+  is-potential-custom-element-name@1.0.1:
+    optional: true
 
   is-promise@2.2.2: {}
 
@@ -19288,33 +19203,6 @@ snapshots:
 
   jschardet@3.1.4: {}
 
-  jsdom@26.1.0(bufferutil@4.0.9)(utf-8-validate@6.0.5):
-    dependencies:
-      cssstyle: 4.6.0
-      data-urls: 5.0.0
-      decimal.js: 10.6.0
-      html-encoding-sniffer: 4.0.0
-      http-proxy-agent: 7.0.2
-      https-proxy-agent: 7.0.6(supports-color@10.2.2)
-      is-potential-custom-element-name: 1.0.1
-      nwsapi: 2.2.22
-      parse5: 7.3.0
-      rrweb-cssom: 0.8.0
-      saxes: 6.0.0
-      symbol-tree: 3.2.4
-      tough-cookie: 5.1.2
-      w3c-xmlserializer: 5.0.0
-      webidl-conversions: 7.0.0
-      whatwg-encoding: 3.1.1
-      whatwg-mimetype: 4.0.0
-      whatwg-url: 14.2.0
-      ws: 8.18.3(bufferutil@4.0.9)(utf-8-validate@6.0.5)
-      xml-name-validator: 5.0.0
-    transitivePeerDependencies:
-      - bufferutil
-      - supports-color
-      - utf-8-validate
-
   jsdom@27.2.0(bufferutil@4.0.9)(utf-8-validate@6.0.5):
     dependencies:
       '@acemir/cssom': 0.9.23
@@ -20251,6 +20139,11 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  node-html-parser@7.0.1:
+    dependencies:
+      css-select: 5.2.2
+      he: 1.2.0
+
   node-int64@0.4.0: {}
 
   node-releases@2.0.27: {}
@@ -20333,8 +20226,6 @@ snapshots:
     dependencies:
       boolbase: 1.0.0
 
-  nwsapi@2.2.22: {}
-
   oauth2orize-pkce@0.1.2: {}
 
   oauth2orize@1.12.0:
@@ -21390,8 +21281,6 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  rrweb-cssom@0.8.0: {}
-
   rss-parser@3.13.0:
     dependencies:
       entities: 2.2.0
@@ -21458,6 +21347,7 @@ snapshots:
   saxes@6.0.0:
     dependencies:
       xmlchars: 2.2.0
+    optional: true
 
   scheduler@0.27.0: {}
 
@@ -22099,7 +21989,8 @@ snapshots:
       picocolors: 1.1.1
       sax: 1.4.3
 
-  symbol-tree@3.2.4: {}
+  symbol-tree@3.2.4:
+    optional: true
 
   systeminformation@5.27.11: {}
 
@@ -22257,10 +22148,6 @@ snapshots:
 
   tr46@0.0.3: {}
 
-  tr46@5.1.1:
-    dependencies:
-      punycode: 2.3.1
-
   tr46@6.0.0:
     dependencies:
       punycode: 2.3.1
@@ -22824,6 +22711,7 @@ snapshots:
   w3c-xmlserializer@5.0.0:
     dependencies:
       xml-name-validator: 5.0.0
+    optional: true
 
   wait-on@8.0.5(debug@4.4.3):
     dependencies:
@@ -22867,8 +22755,6 @@ snapshots:
 
   webidl-conversions@3.0.1: {}
 
-  webidl-conversions@7.0.0: {}
-
   webidl-conversions@8.0.0:
     optional: true
 
@@ -22882,11 +22768,6 @@ snapshots:
 
   whatwg-mimetype@4.0.0: {}
 
-  whatwg-url@14.2.0:
-    dependencies:
-      tr46: 5.1.1
-      webidl-conversions: 7.0.0
-
   whatwg-url@15.1.0:
     dependencies:
       tr46: 6.0.0
@@ -23010,7 +22891,8 @@ snapshots:
 
   xml-name-validator@4.0.0: {}
 
-  xml-name-validator@5.0.0: {}
+  xml-name-validator@5.0.0:
+    optional: true
 
   xml2js@0.5.0:
     dependencies:
@@ -23019,7 +22901,8 @@ snapshots:
 
   xmlbuilder@11.0.1: {}
 
-  xmlchars@2.2.0: {}
+  xmlchars@2.2.0:
+    optional: true
 
   xtend@4.0.2: {}