Keep just the rectangle you want from an image, right on your device.
This tool copies a rectangular region out of your image onto a new canvas and exports just that area, keeping the original format. You define the rectangle with four numbers: X and Y are the pixel coordinates of its top-left corner measured from the top-left of the image, and Width and Height set how much to keep from there. Everything is computed by your browser, so the picture is never uploaded and the crop happens entirely on your device.
When you drop an image, its full dimensions are filled in so the default keeps everything. To trim the edges, increase X and Y to move the corner inward, then reduce Width and Height until only the part you want remains. The tool clamps your values to the image bounds before cropping, so you can't accidentally ask for an area that falls outside the picture — anything too large is trimmed back to fit and the corrected numbers are shown.
Cropping is handy for cutting a subject out of a busy background, removing a border or watermark strip along an edge, squaring off a photo for a profile picture, or focusing a screenshot on the relevant part before sharing. Because only the pixels inside the rectangle are kept, the file usually gets smaller too, which helps when there is an upload size limit.
At the very top-left corner of the image. X increases to the right and Y increases downward, both measured in pixels.
The kept area is copied at full resolution, so there's no scaling loss. Only JPG re-encoding applies a small, standard compression.
Yes — set Width and Height to the same value, then adjust X and Y to centre the square where you want it.