Image Cropper

Crop images to any region or fixed aspect ratio, then download — no upload.

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How it works

Your image loads onto a canvas with a draggable, resizable selection rectangle. Move and resize the box with mouse or touch, or lock it to a fixed aspect ratio (1:1, 4:3, 16:9) for consistent crops. When you export, the selected region is drawn onto a second canvas at full resolution and saved with canvas.toBlob in your chosen format. The crop box is always clamped within the image bounds. Nothing is uploaded — the image is processed entirely on your device.

Common use cases

  • Cropping a profile photo to a perfect square for an avatar.
  • Trimming a screenshot down to just the relevant area.
  • Cutting a 16:9 thumbnail from a larger image.

Frequently asked questions

Can I crop to an exact aspect ratio?

Yes. Choose 1:1, 4:3, or 16:9 to lock the selection box to that ratio as you resize, or use Free mode to select any region you like.

Does cropping reduce image quality?

Cropping itself is lossless — it keeps the original pixels of the selected area at full resolution. If you export as JPG, normal JPG compression applies; export as PNG to stay lossless.

Does it work on touch devices?

Yes. The crop handles respond to pointer events, so dragging and resizing work with both mouse and touch.