MarkUp lets you edit websites by drawing visual annotations for AI agents
By
Michael Castelo
Hard to chew. Probably not worth the jaw work.
Summary
MarkUp is a free, no-account tool that lets users annotate webpages visually by drawing changes directly on the page, then sends those structured visual briefs to AI agents like Claude, ChatGPT, or Copilot — replacing the need to type long text descriptions for web changes.
Key quotes
· 3 pulledWorking with AI agents on web changes? Stop typing long descriptions.
MarkUp lets you annotate any webpage directly — draw what you want changed, label it, and send a structured visual brief to Claude, ChatGPT, or Copilot.
Free. No accounts.
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