MarkUp
Draw what you want changed. Let AI build it.
MarkUp is a free Chrome extension that lets users annotate live webpages directly in the browser, auto-numbering callouts and generating a structured markdown changelog with CSS selectors. Users can export a PNG screenshot plus the markdown brief to paste into any AI assistant—such as Claude, ChatGPT, or Copilot—or save it to a local folder for agent workflows. It requires no account, no cloud sync, and stores all data locally in the browser extension storage.
Users annotate a live webpage with numbered callouts and labels using the extension, then export a PNG screenshot plus a markdown changelog (with CSS selectors) to paste directly into an AI assistant or save to a watched project folder.
Web developers and agencies who use AI coding assistants to make frontend changes
Background.
- Status
- waitlist
- Business model
- freemium
- Company
- Implement AI
Similar projects.
Editorial take on the space this project sits in — momentum signals, adjacent moves, our call on whether the wedge is real. Get pinged when we publish a new read or when the landscape shifts.
Have a take on this space?
Tell us what you’d build differently, where you think the incumbents miss, or what we’ve gotten wrong about this project. Comments + reactions are coming soon.