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Add a Black Border to an Image Online

Add a colored border and round the corners of any picture, with a live preview right in your browser.

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Drag & Drop Image Here

or Click to Browse files

0px
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Processing... 0%
Decoding image
Rounding corners
Painting border
Done

Result

Preview Output

This page opens the border tool with a 20 px black frame preset applied to the first image you drop — check the live preview and download when it looks right.

A black border adds instant contrast: light photos stop bleeding into white pages, screenshots get a crisp boundary, and prints gain the classic dark-frame finish that makes colors appear deeper.

From here you can thicken the frame up to 100 px, pick any other color, or round the corners — everything renders locally in your browser and exports as a PNG.

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Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Border width slider from 0 to 100 px with any color.
  • Corner radius from 0 to 50% — 50% turns the picture into a circle or pill.
  • PNG export that keeps the clipped corners fully transparent.

Key Benefits

✓ Private editing: the picture is framed on your device and never uploaded to any server.
✓ Live preview on a checkerboard: transparent rounded corners are visible before you download.
✓ Two frame styles: an outer border that grows the canvas or an inset band drawn over the edges.

Use Cases

  • • Round the corners of a screenshot so it sits like a card in a presentation or a blog post.
  • • Add a white gallery-style frame to photos before posting a consistent Instagram grid.
  • • Put a thin black border around a light image so it does not blend into a white page.