Add a Border to an Image

No. The border is drawn entirely in your browser with the Canvas API, so the image never leaves your device and no copy is sent to a server.

Yes. The border is added outside the original, so the output grows by twice the border width in both directions. A 40px border on a 1000px side gives a 1080px side, and the original pixels stay untouched.

Percent is measured against the shorter side of the image, so 5% of an image whose shorter side is 800px equals 40px. This keeps the frame proportional whether the photo is small or large.

In pixel mode the slider goes up to 300px, and in percent mode up to 50% of the shorter side. Set it to 0 for no border at all.

Any solid color. Six presets cover white, black, rose, blue, green and yellow, and the color picker lets you dial in an exact hex value for a brand or theme.

The frame itself is always a solid color. For a see through margin, export as PNG and add transparent padding in an editor that supports an alpha channel, since a color swatch cannot be transparent here.

PNG, JPEG and WebP. JPEG and WebP reveal a Quality slider from 5 to 100 percent so you can trade file size for detail, while PNG stays lossless.

No. The original pixels are copied in at full resolution and the frame is painted around them. Any quality change comes only from the export format and quality setting you choose, not from the border.

The tool appends -border before the extension and uses your chosen format, so photo.jpg exported as PNG downloads as photo-border.png.