CodeTweak is a Manifest V3 userscript manager with a built-in editor.

• Create, edit, enable, and disable userscripts.
• Run scripts by URL pattern and run timing.
• Support common GM APIs (GM_getValue, GM_setValue, GM_xmlhttpRequest, etc).
• Import scripts from Greasy Fork.

npm ci
npm run build:chrome

Output: build/chrome

• Chrome package: build/codetweak-chrome.zip

npm install
npm run lint
npm run build:chrome

Docs:

npm run docs:dev
npm run docs:build

• src/ extension source
• buildScripts/ browser build scripts
• docs-src/ VitePress documentation source

// ==UserScript==
// @name        Demo: mark page ready
// @match       https://example.com/*
// @run-at      document-end
// @grant       GM_setValue
// ==/UserScript==

(async () => {
  document.body.setAttribute('data-codetweak', 'ready');
  await GM_setValue('lastRun', Date.now());
})();

MIT. See LICENSE.txt.

• Docs page: https://mrblankcoding.github.io/CodeTweak/guide/privacy
• Source page: docs-src/guide/privacy.md

CodeTweak uses these open source projects:

• webcrack (MIT)
• CodeMirror (MIT)