By ShinobiTools Team · Last updated: August 2026
Drag a box over the part you want to keep, or lock it to a shape first — square, 4:5, 16:9, 3:4, 9:16. Runs in your browser, so the photo is never uploaded.
Nine times out of ten the crop is not really your choice — a profile picture has to be square, an Instagram post wants 4:5, a video thumbnail wants 16:9. So set the shape before you start dragging and the box will hold that ratio no matter where you pull it. Everything outside it is greyed out, which makes it obvious what you are about to lose.
Leave it on "Free" when you just want to straighten out a badly framed shot: cut off the empty foreground, the stranger at the edge, the strip of ceiling. The pixel size of your selection is shown as you drag, so you can hit an exact number like 512 × 512 if a site is fussy about it.
Worth knowing: a crop does not re-encode the parts you keep. It copies those pixels straight out at full quality, which is why this page saves as PNG rather than putting your photo through JPEG a second time. Compressing, resizing and filtering all cost a little quality. Cropping costs none.
That also makes it the smartest first move when a file is too heavy. Half the photo is often sky, table or carpet. Cut that away and you have removed real pixels rather than blurring the ones that matter — then send the result to the compressor if it still needs to be lighter.
The presets cover the ratios that get demanded most often; drag to the pixel counter if you need an exact figure.
Cropping in tight on an old or low-resolution scan will show up its softness, because you are enlarging what is left. If that happens, run the crop through the sharpener or upscaler afterwards to rebuild the detail.
Tap the 1:1 square button before you drag. The selection box will then hold a perfect square whatever size you pull it to.
Yes. Lock the shape you need, then drag until the pixel counter under the photo shows the numbers you want.
No. Cropping copies the pixels you keep without re-encoding them, which is why the result is saved as a PNG rather than re-compressed as a JPEG.
Yes. Drag the box with your finger the same way you would with a mouse; the tool is built for touch as well as pointers.
No. Cropping happens entirely in your browser, so the file never leaves your device.
A passport photo needs the head at a regulated proportion of the frame, so a freehand crop will usually be rejected. PassportNinja handles the sizing and the background for you.
Cropping tight means you are viewing fewer pixels at a bigger size, which exposes any existing softness. Run the result through the AI upscaler to rebuild the detail.