Round the corners of an image
Rounded corners, exported as a transparent PNG.
What this does
- Padding, a background and a shadow — the three things that turn a bare screenshot into something that looks deliberate in a blog post, a slide or a social card.
- It exports at full size — the preview is scaled down so the sliders stay responsive, but the download is rendered from your original. A 3840px screenshot comes back at 3840px plus the padding.
- Every measurement is relative — padding and corner radius are percentages of your image, not pixel counts, so the same settings look the same on a phone screenshot and a 5K one.
- Nothing is uploaded — it is one canvas draw in your browser. No account, no watermark, no export limit.
Rounding corners in CSS only rounds them on your page. This rounds them in the file, so the image keeps its shape wherever it ends up — a slide, a document, an email, a marketplace listing.
The result is a PNG with real transparency in the corners, which is the only format that can carry them. Saving as JPG would fill those corners with white, which is exactly the problem people arrive here with.
The radius is a percentage of the image rather than a number of pixels, so the same setting gives the same look on a thumbnail and on a full-resolution photo.
How to use it
- Drop in the image.
- Set the corner radius.
- Add a shadow or padding if you want them.
- Download the transparent PNG.
Frequently asked questions
Why is the download a PNG?
Because JPG has no transparency. A rounded JPG would have white — or black — triangles in its corners, which looks worse than not rounding them at all.
My corners look square when I use the image.
Whatever you dropped it into is probably converting to JPG or flattening onto a white background. Check the export settings of that tool rather than re-rounding here.
Can I round only some corners?
Not here — all four get the same radius, which is what almost every use needs. For anything more specific, the design editor gives you shapes and full control.
Does it reduce the quality?
No. PNG is lossless, so every pixel that isn’t in a corner is unchanged.
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