Show HN: Free tool to mark points and polygon regions

2026-05-06 | original

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Why This Matters

This new free tool enhances image annotation capabilities by allowing users to mark points and polygon regions with precision, primarily optimized for tablets and desktops. Its focus on pixel-accurate marking supports professionals and enthusiasts who need detailed image analysis and editing, making it a valuable resource in fields like design, research, and digital art.

Key Takeaways

Supports precise point and polygon marking on images.
Optimized for larger screens like tablets and desktops.
Free to use, enhancing accessibility for various users.

Click the icon, drop an image, or use Load Image

No shapes yet. Click on the image to add a point.

Tablet or desktop required

Tack works best on a bigger screen.

Marking pixel-precise points and pulling bezier handles needs more room than a phone gives. Open tack.pics on a tablet or desktop browser to use the tool.

Read on for what Tack is and what it's for.

Explore topics: tack.pics bezier handles pixel-precise image annotation desktop browser