Round the corners of an image
Corners 0–50% of the short side, transparent outside. Local processing, nothing uploaded.
Rounded corners are the cheapest way to look deliberate: the same screenshot with square corners reads as grabbed in a hurry, and with rounded ones as placed on a product page. App icons, cards, avatars, figures inside documents — rounded is close to the default aesthetic.
This page is one click: drop the image in, drag the “Corner radius” slider, watch the result on the right, press “Download” for a PNG. The radius is a percentage of the short side, 0 to 50% — a percentage rather than pixels, because the same number then looks equally round on a large image and a small one; at 50% a square becomes a circle. Outside the rounding it is transparent, which is why this page only makes PNGs: JPG has no alpha channel and the corners would come out black. If what you want is the other thing — a rounded rectangle as a base plate with the picture sitting on top, the card look — press “Pro editor” for the full editor: ① draw one with the rectangle tool and set “Corner” to anywhere from 0 to 500 px in the properties panel; ② put the image on the layer above it; ③ press Ctrl+Alt+G (⌥⌘G on a Mac) for Create Clipping Mask. Clipping is non-destructive, not a pixel is lost, and pressing again releases it.
Key features
Corners scaled to the image
0–50%, as a share of the short side: the same number looks equally round on a big or small image, and at 50% a square becomes a circle.
Transparent outside the rounding
Which is why this page only makes PNGs — JPG has no alpha channel and the corners would come out black.
Transparent corners on export
Save as PNG and the area outside the corners is transparent — no white fringe on other backgrounds.
Runs locally
The image is never uploaded. Close the tab and nothing is left.
How to use
- 1 Add the imageDrag it into the box, or press Ctrl+V to paste.
- 2 Drag the “Corner radius” sliderThe radius is a percentage of the short side, 0 to 50%; at 50% a square becomes a circle. The result on the right keeps up as you drag.
- 3 Download the PNGOutside the rounded corner it is transparent, so this page only makes PNGs — JPG has no alpha channel and the corners would come out black.
- 4 For a card layout, use the pro editorThis page rounds the four corners of the whole image. For the card look — a rounded rectangle as a base plate with the picture sitting on top — use the full editor: draw one with the rectangle tool, set “Corner” to anywhere from 0 to 500 px in the properties panel, put the image on the layer above it, then press Ctrl+Alt+G (⌥⌘G on a Mac) for Create Clipping Mask.
FAQ
- Is there a one-click round-corner button?
- Yes — this page is it. Drop the image in, drag the “Corner radius” slider, press download: three moves, with the slider set as a percentage of the short side (0 to 50%). Only if you need the radius exact to the pixel, or the card layout with a rounded plate under the picture, do you need the rectangle-plus-clipping-mask route in the full editor.
- How do I make a circular avatar?
- Take the “Corner radius” slider to 50% and you have a circle — provided the image is square to begin with; if it is not, crop it to 1:1 on the crop page first. The full editor has another route: draw a circle with the ellipse tool holding Shift, then press Ctrl+Alt+G for a clipping mask.
- Are the corners actually cut off?
- On this page, yes: in the PNG you download, everything outside the rounding is already transparent pixels (your original is untouched, but this exported copy is cut). To keep it reversible, use a clipping mask in the full editor — that is non-destructive, not a pixel is lost, and pressing Ctrl+Alt+G again releases it back to square corners.
- Is it free? Is my image uploaded?
- Free, no sign-up, no usage limit. Nothing is uploaded either — it all runs in your own browser.
Try Round the corners of an image now
No install · no sign-up · local stays local · free AI credits every day