MarklyKit is a browser extension that lets you highlight, annotate, and take notes on any website. Save your research, revisit your highlights, and stay organized — without leaving the page.
Highlight text or draw on any page element. Your highlights stay exactly where you placed them, even when the page updates.
Add sticky notes and connect ideas across multiple pages. Turn scattered highlights into clear, structured insights.
Plug your research into Claude, ChatGPT, or Grok via MarklyKit's built-in MCP server. Let the AI search, summarize, and reason over what you've saved.
Export your annotated workspace as a searchable, citation-ready PDF for archiving, review, or sharing.
Core Capabilities
Your highlights stay pinned to the exact text you selected — even when a website updates its layout or redesigns its pages.

Pipe your highlights, notes, and folders straight into Claude, ChatGPT, or Grok through MarklyKit's built-in MCP server.
Export your highlights and notes as citation-ready academic PDFs, ready for permanent archiving or sharing with colleagues.
Layer your insights directly over page elements. Drag, drop, and anchor thoughts anywhere on the live web.
Highlight key passages, add inline notes, and export annotated sources directly from your browser — no copy-pasting required.
Mark up readings, save important quotes, and revisit your notes when studying — all without leaving the page.
Annotate documentation, flag issues in specs, and share highlighted snippets with your team in seconds.
Focus on your research, not your bill.
For individual researchers and hobbyists.
Sync your research to the cloud, unlock sticky notes and PDF export, and plug Claude, ChatGPT, or Grok into your highlights through MarklyKit's MCP server.
Join 20,000+ researchers, students, and developers who use MarklyKit to capture and organize what matters.
No credit card required. Setup in 30 seconds.