To round the corners of an image, add your photos, set the corner radius as a percentage of the shorter side or in pixels (50% makes a circle or oval), choose which corners to round and press Apply. Free, private, and your images are never uploaded.
Add your images, adjust the settings with a live preview and download the result. Everything runs in your browser, so your images are never uploaded.
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To round the corners of an image, add your photos, set the corner radius as a percentage of the shorter side or in pixels (50% makes a circle or oval), choose which corners to round and press Apply. Save as PNG or WebP to keep the transparent corners. Nothing is uploaded.
Give photos and graphics soft, rounded corners for cards, avatars and app screenshots. Anti-aliased edges keep the curve smooth, and the corners become truly transparent. It is a free tool from Websolindia, a New Delhi website design and SEO company that builds fast, image-optimised websites.
Unlike most online image tools, this one does not upload your pictures. Your browser decodes each image, applies the edit with our own pixel code and shows a live preview before you download. You can process up to 30 images at a time and download them one by one or together as a ZIP.
Once your image is ready, you may also want the Circle Image Cropper Online, the Add Border to Image Online or the Add Watermark to Image Online. All of our free image tools are listed in the Image Editing Tools Online collection and the Websolindia Image Converter.
Use this table to choose settings with confidence.
| Radius | Look |
|---|---|
| 5–10% | Subtle softening |
| 15–25% | Typical app-card corners |
| 30–45% | Pill-like rounded rectangle |
| 50% | Oval or circle |
This is exactly what happens to your image, with no hidden step. You can check that nothing is uploaded by watching your browser's network tab while you use the tool.
| Step | What happens |
|---|---|
| 1. Read and decode | The image is decoded. |
| 2. Work out the radius | A percentage is applied to the shorter side: r = shorter side × p ÷ 100, capped at half the shorter side. |
| 3. Measure each corner pixel | For pixels in a corner square, we measure the distance d from the corner circle's centre. |
| 4. Set the edge alpha | alpha × clamp(r − d + 0.5, 0, 1): pixels outside the arc become transparent, with a one-pixel anti-aliased edge. |
| 5. Encode | Saved as PNG or WebP with transparency, or as JPG with the corners filled. |
| Setting | Default | Choices | What it does |
|---|---|---|---|
| Radius in | % of the shorter side | % of the shorter side; Pixels | |
| Corner radius | 15 | 0 to 50 | 50% makes a circle or oval. |
| Round top-left | On | On / Off | |
| Round top-right | On | On / Off | |
| Round bottom-right | On | On / Off | |
| Round bottom-left | On | On / Off | |
| Save as | PNG (transparent corners) | PNG (transparent corners); WebP (smaller, transparent corners); JPG (corners filled with a colour) | |
| Background colour | #ffffff | Any colour | Fills any transparent area when saving as JPG. |
| Quality | 92 | 1 to 100 | Used for JPG and WebP output. 85–92 suits most images. |
| What | Formula | Notes |
|---|---|---|
| Radius | shorter side × p ÷ 100 | Percent mode; maximum 50%. |
| Edge coverage | clamp(r − d + 0.5, 0, 1) | d is the distance from the corner circle's centre. |
| Component | Role | Where it runs |
|---|---|---|
| Our corner mask | Anti-aliased rounded corners | Your browser |
| Topic | Detail |
|---|---|
| Images per batch | Up to 30 at a time |
| File size | Up to 150 MB per image |
| Image dimensions | Up to about 120 megapixels; larger images are declined to protect your browser |
| Privacy | Images are processed in your browser and never uploaded |
| Browsers | Current Chrome, Edge, Firefox and Safari (WebAssembly is needed for AVIF, HEIC, TIFF and AI tools) |
| Metadata | EXIF and location data are not copied into new files |
Add the image, set the radius, and press Apply. Download the PNG or WebP to keep the transparent corners.
JPG cannot store transparency, so the corners are filled with the colour you choose (white by default). Use PNG or WebP for transparent corners.
Set the radius to 50% on a square image. For a perfect circle from any photo, use the Circle Image Cropper Online.
Yes. Untick the corners you want to keep square.
No. Only the corner pixels' transparency changes; the rest of the image is untouched.
Yes. Add the Add Border to Image Online first or afterwards.
Yes. It is free, needs no sign-up, adds no watermark and has no daily limit. It is provided by Websolindia.
No. Your images are read and processed inside your browser on your own device. They are never sent to Websolindia or anyone else, which is why the tool is safe for private photos.
No. New files are created from the pixels, so camera details, GPS location and other embedded metadata are not copied. Keep your originals if you need that information.
Up to 30 images per batch and 150 MB per image. Images above roughly 120 megapixels are declined with a clear message rather than freezing your browser.
Current versions of Chrome, Edge, Firefox and Safari on computers, phones and tablets. Large images and AI or AVIF features run faster on a computer.
Websolindia built it. We are a New Delhi website design, SEO and digital marketing company serving businesses since 2014. See our website designing and SEO services.
More in this collection: Image Editing Tools Online
