Click to upload or drag & drop a photo
Processed entirely in your browser — nothing is uploadedWhy DPI matters for a cm-based size
Centimetres describe a physical print size, but image files are measured in pixels — converting between the two requires a resolution (DPI) assumption. 300 DPI is the standard for sharp, print-quality photos (like passport photos), while 72 DPI matches typical screen display. Pick the DPI your specific form or printer requests; if unsure, 300 is the safer default for anything that will be printed.
How to use Resize Image in Centimetres
- Upload your photo, then set the target size, ratio, or preset this page asks for.
- The tool centres and crops (or resizes) your photo automatically to match.
- Review the result in the preview panel — adjust the settings again if it needs a tweak.
- Download the finished file once it looks right.
Tips for best results
- Use a photo where your subject is roughly centred — automatic cropping trims evenly from the edges, so an off-centre subject can get cut.
- For anything going to print, 300 DPI is the safest default unless your form says otherwise.
- If a form specifies both a physical size and a file-size limit, resize first, then compress the result to hit both requirements.
❓ Frequently asked questions
Can I undo a resize after downloading?
Downloading doesn't change your original file — keep it if you want to try a different size later.
Does this work with PNG and WEBP files too, not just JPG?
Yes — you can upload any common image format; the result downloads as a JPG unless the tool says otherwise.
What DPI should I use for a passport-style photo?
300 DPI is the standard for passport and ID-style print quality; use our dedicated passport photo tool for ready-made size presets.
Why does the same cm size give different pixel results at different DPI?
Because DPI defines how many pixels represent one inch of physical print size — a higher DPI packs more pixels into the same physical size, giving a sharper print.
Can I resize in millimetres or inches instead?
Yes — see our millimetre and inch resize tools.