Exact rectangle · local Canvas

Crop an image without uploading it

CropFrame validates one static image, exposes the authoritative X, Y, width and height, keeps ratio presets deterministic and exports only the selected source pixels inside an isolated no-network capsule.

Open image cropper

No account · no upload · exact coordinates · same Blob preview/download

Three explicit steps

From a local image to an exact cropped file

01

Choose one static image

Type, signature, animation, bytes, decoded dimensions and pixel area are checked before the editor opens.

02

Position the source rectangle

Drag, use the keyboard or enter integer X, Y, width and height; a preset can preserve a common ratio.

03

Generate and download one Blob

Choose PNG, JPEG or WebP. Preview and download reference the same exact local result.

Ordinary digital publishing

Useful when the source frame contains more than the final asset

  • Remove empty margins from a screenshot before documentation.
  • Frame an ordinary photo for a square profile tile.
  • Crop a wide illustration to 16:9 without stretching it.

Reproducible examples

Reproducible crop examples

Choose one image, position a freeform or ratio-locked rectangle, verify its source coordinates and download the exact local Blob.
View examples

JPEG, PNG and WebP · no upload

Crop exact source pixels locally

Choose one image, position a freeform or ratio-locked rectangle, verify its source coordinates and download the exact local Blob.

Open image cropper