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Round off the corners of any photo for app icons, avatars, and cards — with transparent corners, right in your browser.
Drag & drop images here, or click to browse
PNG, JPG, or WebP — up to 20 images, 20MB each
Upload one or more images to round their corners
This free online tool rounds the corners of your photos, producing transparent corners perfect for app icons, avatars, cards, and mockups. Set one radius for all four corners, or control each corner independently, and optionally fill the corners with a flat background color for a fully opaque result. Every image is processed locally in your browser, and batches of photos can be exported together as a ZIP.
Is this corner rounding tool really free?
Yes. Rounding the corners of your images is completely free, with no watermark, sign-up, or file limit beyond the batch size shown in the tool.
Will rounding the corners reduce my image quality?
No. The tool renders the rounded shape at twice the resolution and then scales it down, which produces smooth, anti-aliased edges without blurring or degrading the rest of your photo.
Can I round the corners of multiple photos at once?
Yes. Upload up to 20 images, set your radius and corner options once, and download them all together as a single ZIP file.
Why are my rounded corners black instead of transparent?
That happens when a tool exports rounded corners as JPEG, which has no alpha channel and fills any transparent area with black. This tool avoids that entirely — if you haven't enabled a background color, it always exports PNG so the corners stay properly transparent.
Can I control each corner separately?
Yes. Turn off "link all corners" to reveal four separate sliders for the top-left, top-right, bottom-right, and bottom-left radius, so you can round some corners more than others.
What radius should I use for an app icon?
App icon platforms typically apply their own mask, but if you need a pre-rounded icon, a radius of around 20-22% of the shorter side is a common "squircle-like" starting point — increase it toward 50% for a fully circular icon.
Your photos never leave your device. Every corner is rounded locally in your browser, and nothing is uploaded to a server.