Crop Image
Cropping discards pixels outside the frame, so keep the original if you may need it.
How Crop Image works
Trim a percentage from every side, or crop to a square or 16:9 frame. Cropping discards pixels outside the frame, so keep the original if you may need it. Everything happens inside this page: the tool reads your input, runs the calculation or conversion locally, and hands the result back to you. Nothing is transmitted, because there is no backend to transmit it to.
That design choice is deliberate. Most free tool sites upload your files to a server, process them there, and quietly keep a copy. Toolcin cannot do that — the site is a set of static files. If your connection dropped the moment the page finished loading, every tool would still work.
Three ways to crop
Trim from all sides removes a percentage from every edge, which is the fastest way to strip a uniform border or a screenshot's window chrome. The slider runs 0 to 40 percent.
Centre square takes the largest square from the middle — the standard fix for a photo that needs to be a profile picture. Centre 16:9 does the same for the widest ratio that fits, which is what a video thumbnail or a link preview wants.
Cropping discards pixels
Unlike resizing, cropping throws the outside away permanently. There is no undo once the file is downloaded, which is why the original should be kept until the crop is confirmed.
Cropping also changes the effective resolution: a 4000 × 3000 photo cropped to a centre square is 3000 × 3000, still plenty for print, while a 1200 × 800 screenshot cropped to 16:9 leaves 1200 × 675.
| Mode | Use for |
|---|---|
| Trim % | Removing a border or frame |
| Centre square | Profile pictures, thumbnails |
| Centre 16:9 | Video stills, link previews |
After the crop
For a link preview, crop to 16:9 and then resize to exactly 1200 × 630 — the crop sets the shape, the resize sets the size. Doing it in the other order means cropping a smaller image and losing more detail than necessary.
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
Is my photo uploaded?
No — the image is drawn on a canvas inside your browser and never leaves your device.
Which format is the result?
PNG, which keeps full quality and supports transparency.
Can I choose where the crop starts?
These modes crop from the centre. An arbitrary rectangle needs an editor with a drag handle.
Does cropping change the file size?
Yes, usually down, because fewer pixels are encoded.
Keep going
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