tack. — Mark coordinates on images

tack.pics

Mark points and polygon areas on any image. Export to JSON or YAML. Free, in your browser, no upload.

why we picked it

A straightforward browser tool for annotating images with coordinates and polygons. No account or upload required; exports data as JSON or YAML. Useful for developers and designers who need quick, privacy-respecting image markup.

Checked with Google Web Risk · 2 hours ago

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language: EN
here since: July 2026