Snapmark
Annotate screenshots before pasting them into any AI chat
Snapmark launched on April 19, 2026 with 5 votes, #1,846 of 21,248 launches that month and more than 75% of that year's launches.
What it does
Annotate screenshots before pasting into any AI chat Claude, Copilot, Cursor, Codex, Gemini, Cline. Three things the marketplace doesn't ship: • Blur API keys and PII before the image leaves your machine • Numbered step callouts so models read UI flows in order • Auto compress on copy so retina screenshots don't burn vision tokens Press ⌘⇧A in VS Code, draw, paste. Works anywhere you can paste an image. 100% local. Open source (MIT). No telemetry.
Annotate screenshots on your clipboard before pasting them into AI chats like Claude, Copilot, and Cursor. Blur sensitive parts, add numbered steps, and resize large images automatically.
Snapmark sits in your clipboard. Copy a screenshot, hit ⌘⇧A , draw on it, and paste into Claude, Copilot, Cursor — anything. Snapmark is built for one workflow: annotating screenshots for AI agents. That’s it. Hide API keys, tokens, and PII before the image leaves your machine. No key survives the paste. Drop 1 · 2 · 3 markers to walk the model through a UI flow in order. No more "what am I looking at" back-and-forth. Retina screenshots get resized to 1920px on the long edge so vision models don't burn tokens on pixels they can't use. Snapmark never touches any agent’s window. It lives in your clipboard. Use your OS screenshot tool — ⌃⇧⌘4 on macOS, Win+Shift+S on Windows, or any Linux…from snapmarkapp.netlify.app
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