Passport and ID photo size resizer

Crop a photo to the size an application asks for, in millimetres, pixels and an optional KB limit. It does not upload your photo and does not alter the background.

Quick answer: choose your photo, pick the document, keep 300 dpi, centre the head by dragging, and download. For example a 35 x 45 mm photo is 413 x 531 pixels at 300 dpi.

How to use the photo size tool

1. Choose a photo. Use a front-facing picture with the whole head and shoulders visible, in even light, against a plain background.
2. Pick the document. Each option sets the width and height in millimetres. Choose "Custom size" if your application lists different dimensions.
3. Position the head. Drag the picture, use the sliders, or press the arrow keys while the preview is focused. Keep the face centred and fully visible.
4. Add a file-size limit if needed. Enter a maximum in KB and the tool lowers the JPEG quality until the file fits, keeping the exact pixel size.
5. Download and check. Open the saved JPG and compare it with the issuer's rules before you upload or print it.

How millimetres become pixels

Printed sizes are in millimetres, while digital uploads are measured in pixels. The link between them is the resolution in dots per inch (dpi). The conversion is pixels = millimetres divided by 25.4, multiplied by the dpi. At 300 dpi, a 35 mm width becomes 413 pixels; at 600 dpi it becomes 827.

The tool also writes the chosen dpi into the saved JPG, so programs that read it will show the intended print size.

Photo sizes by document

Last reviewed 2026-10-21. "Checked" means we read the numbers from the issuer's own page on that date; "Not confirmed" means the official page could not be read and the figures come from other sources. Always check the issuer's page before you submit.

What a resizer can and cannot do

A resizer fixes the size of the picture. It cannot fix the photo itself. Issuers review the head position, expression, lighting, background and print quality, and a photo with the right dimensions can still be refused.

• The UK passport service says photos taken on your own device should not be cropped, because the service crops them for you.
• The Canadian passport photo rules say altered photos are rejected and printed photos must come from a commercial photographer, so a home-cropped print is not suitable.
• The Australian Passport Office asks for dye-sublimation prints on heavy glossy paper and does not recommend online photo services or apps.

Use this tool where an issuer accepts a resized digital photo: for example ID card portals, visa application centres and school or job forms that ask for a specific size. When in doubt, ask the issuer or use a professional photo provider.

Checklist before you upload

• The size and pixel dimensions match the instructions exactly.
• The file format and the maximum KB are within the stated limits.
• The face is centred, looking straight at the camera, with a neutral expression and eyes open.
• The background is plain and the lighting is even, with no shadows or glare.
• The photo is recent enough: issuers set their own limit, from one month up to six months.
• You have kept the original photo in case you need to redo the crop.

If the upload form also sets a file-size limit, set a maximum KB in the tool above, or run the result through the image compressor.

Last reviewed 2026-10-21.