Crop an image

How Crop Image works

The image is decoded into a canvas element, redrawn, and handed back as a new file. A canvas lives in the tab; closing it discards the pixels, which is why nothing needs deleting afterwards. Nothing is re-encoded on a server, so no copy of the original survives anywhere you cannot see.

That is the whole architecture: static files, one script, no upload endpoint to leak or log. Close the tab and the work is gone.

Cropping is not resizing

A resize resamples every pixel and can soften the image. A crop throws pixels away and keeps the rest exactly as they were. This tool only crops, so the output is as sharp as the region you kept — there is no interpolation step at all.

That also means the crop is limited by the source: you cannot crop a 4000-pixel-wide region out of a 1200-pixel photo. The box shows the real pixel size while you drag, so the limit is visible before you save.

Fixed ratios and why they matter

Social platforms crop to their own ratios, so uploading an arbitrary rectangle means losing control of the frame. Instagram feed is 4:5, stories and Reels are 9:16, a square is 1:1, and a 16:9 crop is what a video thumbnail needs.

Passport photos are the strictest case: 35 mm × 45 mm in Pakistan, India, the UK and most of the EU; 2 × 2 inches in the United States. The ratio option here gives the shape — print at 300 dpi to get the physical size right.

Rotate before you crop

A phone photo often carries an orientation flag rather than rotated pixels. Rotating here redraws the canvas first, so the crop coordinates refer to what you can actually see on screen.

The export is a PNG, which keeps the crop lossless. Convert to JPG afterwards if the file needs to be small.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions