Round Image Corners
This tool rounds the corners of an image and gives you back a PNG with transpare
This tool rounds the corners of an image and gives you back a PNG with transpare
How to use Round Image Corners
- Upload an image and set a corner radius in pixels or percent, using one radius or per-corner values.
- Check the live preview against the checkerboard to see exactly how the rounded, transparent corners will look.
- Click Round Corners & Download PNG to save the image with its see-through rounded corners.
About Round Image Corners
This tool rounds the corners of an image and gives you back a PNG with transparent, see-through corners. You upload a picture, pick a corner radius, watch a live preview update, and download the result. You can set a single radius for all four corners or control each corner independently, using either pixels or a percentage of the image's shorter side (100% gives you a full pill or circle).
It works by drawing your image onto an HTML canvas clipped to a rounded-rectangle path, so the pixels outside the rounded edge become transparent rather than colored. Because transparency only survives in formats that support it, the download is always a PNG. If you need a rounded image on a solid background instead, place the exported PNG over that color afterward.
Everything runs locally in your browser using the Canvas API. Your image is never uploaded, sent to a server, or stored anywhere, so it stays private on your device even for personal photos or work assets.
Frequently asked questions
- Will the rounded corners be transparent?
- Yes. The corners are clipped out and left fully transparent, and the file is saved as a PNG so that transparency is preserved. If you re-save it as a JPG elsewhere, the corners will fill in with a solid color because JPG has no transparency.
- Can I round each corner by a different amount?
- Yes. Switch the Corners option to 'Control each corner' and you get separate radius fields for top-left, top-right, bottom-left, and bottom-right. This is handy for card, tab, or speech-bubble shapes.
- What does the percentage option mean?
- Percent is measured against the image's shorter side. At 50% each corner is rounded to a quarter of the shorter dimension; at 100% the radius maxes out, turning a square image into a circle and a rectangle into a pill/stadium shape.
- Is my image uploaded anywhere?
- No. The rounding happens entirely in your browser with the Canvas API. Nothing is uploaded or stored, so your image never leaves your device.
- What image formats can I use?
- You can load common formats your browser supports, including PNG, JPG, WebP, and GIF (first frame). The output is always a PNG so the rounded transparent corners are kept. Very large images may take a moment to process.
- Does it keep the original resolution?
- Yes. The image is processed at its full natural pixel dimensions, so the exported PNG has the same width and height as your original — only the corners are trimmed.