The Web is
your Canvas
A browser extension that lets you edit any website with AI‑generated userscripts. Just describe what you want changed.
Enabling "zen mode" on Wikipedia
Redesigning the GitHub homepage
Flipping the Reddit layout
Restyling NY Times to look like Hacker News
Adding a waving man to QuillMonkey.com
Fixing low-contrast text on Hacker News — in seconds.
"If I don't like something about a website, I should be able to fix it immediately."
Introducing QuillMonkey, an AI userscript manager.
As a frequent user of tools like Claude Code and Cursor, developers have become accustomed to the ease of editing. If I don't like something about what I'm looking at, I can fix it immediately by prompting an AI agent. Ask for something to be changed, and see the effect right away.
However, no such workflow exists for the web. For how long we spend browsing, but if we don't like properties about of our favorite websites, it's non-trivial to fix those issues.
A better web can be achieved through a combination of AI codegen and userscripts (e.g., what TamperMonkey manages). But unlike TamperMonkey, QuillMonkey enables an AI-native user flow.
With QuillMonkey, you can view, edit, and enable/disable userscripts, both AI-generated or hand-written. Or, don't look at the scripts at all, and vibe your web experience.
Natural language
No coding required. Just describe the change — "make the sidebar narrower", "remove the cookie banner", "switch to dark mode".
Persistent scripts
Changes are saved as userscripts and re-applied automatically. Toggle them on or off at any time.
Version history
Every edit is versioned. Roll back to any previous state with a single click — no work is ever lost.
Screenshot analysis
The AI can see the page. It analyses screenshots to understand layout, colours, and visual context before writing code.
You control tool permissions
Control which actions the AI can take automatically. Require approval before writing or updating scripts — globally or per conversation.
Multiple models
Choose between Claude Opus, Claude Sonnet, GPT-5.2, Gemini 2.5 Pro, DeepSeek V3.2, and Grok 4. Switch models any time.