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Typically, you can execute custom JavaScript code in the browser's DevTools > Console. This extension implements functionality missing from browsers, to save custom JavaScript code that can: * Automatically execute when the page loads. * Manually execute with a button click. This extension also supports CSS code, which is internally converted to JavaScript code for execution. This extension is not a replacement for Greasemonkey, so it doesn't support Greasemonkey-specific code.
ScriptRunner - v3 userScript manager
ScriptRunner allow you to create,manage and inject userScripts on any website you want 📢 Create,manage and inject userScript in any website you will 🔔 Top Features ✪ V3 userScript manager ✪ No Signup or permission required ✪ Modern UI design ✪ Lightweight and advanced code editor ✪ Free and Open source: https://github.com/anilkumarum/ScriptRunner ✪ Debug error in script in scriptRunner's console ✪ Swiftly activate and deactivate scripts with just two clicks ✪ Link local script file or folder ✪ Don't ask "read and change all your data on add all websites" Permission. ✪ Install script from userscript sites e.g greasyfork.org, www.userscript.zone, openuserjs.org, github & more ✪ No tracking, no Ads Change the web at will with userscripts Userscripts are small programs that modify page layouts, add or remove features, and automate actions to personalize your web experience. ✅ link local script file When you edit local file in any ide or text editor, scriptRunner auto-update script. ✅ 🔍 Discover Userscripts: Find a wide array of userscripts at Paste url link ends with ".user.js". You can mail us: coderrailhelp@gmail.com
ScriptCat Beta
Everything can be scripted, allowing your browser to do more! ScriptCat, a browser extension that can execute user scripts, everything can be scripted, allowing your browser to do more things! We built a framework for executing background scripts and Greasemonkey/Tampermonkey scripts based on the design ideas of Greasemonkey/Tampermonkey. It also has several unique APIs that enable scripts to do more. Furthermore, we provide a fantastic online editor that makes script code development more pleasant and easy. **Please Star it if you find it useful. ❤❤❤** - Cloud Sync: script recovery is easy when changing or reinstalling browser - Scripts subscription: creating your own script collections or enabling multiple scripts to work together. - Compatibility: allowing seamless migration from other userscript managers. - Background scripts: allowing your scripts to run continuously in the background. - Scheduled scripts: allowing for daily scheduled tasks. You can use them for automatic check-ins, timed reminders, and more. - Rich API: more powerful APIs than other managers, which can realize more functions. - Sandbox mechanism: ensuring user safety, script permissions are granted only with user consent. - Excellent editor: providing API auto-completion and ESLint. - Nice UI
Robomonkey: Chat to Build Extensions & Automations, AI Assistant
Robomonkey is an AI-powered Extension Builder and AI Assistant, capable of building any Chrome extension you need. Chat with Robomonkey to build AI extensions, automations, autofill tools, and data extraction workflows. Robomonkey is good for: ✅ Building Data Extraction Tools in seconds - to CSV, ZIP, TXT, JSON, etc. ✅ Making UI changes on any website - add new buttons, features, and visual tweaks ✅ Building automatic Form-Fillers & Automations for any website 🛠️ Works with any website 🛠️ Robomonkey builds persistent extensions 🛠️ Robomonkey analyzes the things you see on the screen 🛠️ Works with most Tampermonkey-compatible and Greasemonkey userscripts 🛠️ Share extensions with friends and colleagues 💭 Why Use Robomonkey? Robomonkey is an AI Extension Builder that allows you to build extensions that don’t exist yet. If you can imagine it, Robomonkey will make it real. 💭 How does it work? Robomonkey functions as a userscript manager similar to Tampermonkey or Greasemonkey, enhanced with a powerful AI Assistant. It supports most Tampermonkey and Greasemonkey scripts. Use the built-in code editor to share extensions with colleagues and friends, or to import userscripts from the web. 🤖 Build any extension by telling Robomonkey exactly what you need. Install now for free and start building extensions with AI!
Moonly - javascript and css injector
Inject javascript and css into pages dynamically. Moonly – lets you inject custom JavaScript and CSS into any web page. Create scripts, set conditions for when they run, and manage everything through a clean, built-in editor. What you can do: - Inject JavaScript or CSS — write either in a full-featured code editor (syntax highlighting, line numbers, bracket matching, and a choice of editor themes) - Run scripts manually with one click from the popup, or automatically when a page matches your conditions - Match pages by exact URL, substring, or regex pattern - Control injection timing — run JavaScript before the page loads or after (CSS is applied early, with no flash of unstyled content) - Organize your library — search, duplicate, reorder, and enable/disable scripts - Import and export scripts as JSON, one at a time or all at once, for backup or sharing Built for developers, testers, and power users who want to automate repetitive tasks, test page behavior, or customize their browsing experience. - Tabs — detect the active page for script matching - Scripting — inject your JavaScript and CSS into pages - Storage — save your scripts locally on your device Scripts are stored entirely on your device and never sent anywhere. No data is collected. Use responsibly — only run scripts you trust.