gizmobench

Rounded Corners Cropper

Make a clean rounded rectangle crop with an adjustable selection and local PNG export. Nothing is uploaded and the original image remains untouched.

The picture appears here.

· or drop one anywhere on the stage

Never uploadedNo accountCropped in this tabFull resolution out
Shape
Ratio
Radius
Output

Square corners rounded off by the radius you set, transparent in PNG. Drag a box over the picture, or drag its corners. Arrow keys move the selection and shift with an arrow resizes it, a step at a time. The numbers below are the picture's own pixels, which is what the file is cut from, so a preview shown smaller than the picture still downloads the selection at full size.

  • Selectionx, y, width, height in source pixels
    no picture yet
  • Outputexactly the selection
    no picture yet
  • Originalkept untouched
    no picture yet
The crop is exact and the original is never altered. The box you drag is mapped back to the picture's own pixels, so the file you download is the selection at full resolution and not a scaled copy of the preview. The original is never changed. A circle or rounded crop keeps real transparency in PNG; JPEG has none, so it is filled with the background colour you pick. The picture is opened and written inside this tab, and the only thing kept between visits is the shape, ratio and format you last used.

Common questions

Does this run in my browser?
Yes. The page performs the core transformation in your browser and explains the result before you copy or download it.

The box you drag is mapped back to the picture's own pixels, so the file you download is the selection at full resolution and not a scaled copy of the preview. The original is never changed. A circle or rounded crop keeps real transparency in PNG; JPEG has none, so it is filled with the background colour you pick.