Rounded Corners
Round corners and optionally add a border.
How it works
- 1Drop an image.
- 2Set radius and an optional border color and width.
- 3Download the PNG.
About
Round image corners in the browser and optionally stroke a border. Transparent corners export as PNG. Nothing is uploaded.
The radius is clipped so it never exceeds half the shorter side. The border is painted on the same path. This burns the shape into pixels — it is not a CSS-only preview.
Output is always PNG. Caps: 32 megapixels, 50 MB. One file.
Common use cases
- App store screenshots
- Avatar-style thumbnails
- Soft-edge product cards
- Round a logo tile for a slide
What you actually get
A PNG with four equal rounded corners. Pixels outside the path are transparent. An optional stroke follows the path.
This is not a layered mask you can reopen. Flattened output only.
Corners vs crop
Crop changes the bounding box. Rounded corners keep the same width and height and only hide the corners.
Need a circle avatar? Set radius high on a square crop (use Crop Image 1:1 first).
When not to use this tool
Skip it if you need different radii per corner, a drop shadow, or a JPEG with a solid background fill. Draw those in a design tool.
Files above 32 megapixels are rejected. Huge PNGs will be large on disk — compress after if you must.