Passport Photo Resizer Online
Sort out your official documents from home. Our tool helps you resize your photos to specific passport or visa requirements accurately without ever uploading your personal data.
Last updated: August 2026
Drop your images here or click to select
Supports JPG, PNG, WebP and AVIF
Passport specifications are written in millimetres, and screens work in pixels — so the first thing a passport resize needs is a conversion, and that conversion has an input most guides never mention. Millimetres only become pixels once you pick a print resolution. The UK, whose rules GOV.UK publishes in full, specifies a printed photo of 45mm high by 35mm wide. At 300 DPI that comes out around 413 by 531 pixels; at 600 DPI it is double that. Neither number is more correct than the other — they are the same photo at different print resolutions.
Digital submission is a separate track with separate numbers, which is the second thing that catches people out. For a UK application submitted online, GOV.UK asks for at least 600 pixels wide and 750 pixels tall — and 600:750 is exactly 4:5, a different shape from the 7:9 of the printed 35×45mm size. The print and digital rules genuinely are specified independently, so the first question to settle is which one you are actually submitting to.
Resizing is also the second half of the job rather than the first. Passport rules constrain how much of the frame your head fills, and no resize can change that — scaling an image changes every dimension together and leaves the proportion exactly as it was. Crop to the required framing first, using Crop Passport Size Photo Online, then come back here to land on the pixel dimensions.
UK passport photo dimensions, print and digital
A worked example of the two tracks. Every published figure is quoted from GOV.UK; the pixel conversions are arithmetic on those figures at a stated print resolution. These are the UK's numbers only — check your own country's authority.
| Target | Value | How to reach it |
|---|---|---|
| Printed photo | 45mm high by 35mm wide | A 7:9 frame. Crop to that shape first, then resize — the millimetres are what your printer needs, the ratio is what the crop needs. |
| Printed photo at 300 DPI | ≈413 × 531 px | The 35×45mm size converted at 300 dots per inch, a common print resolution. Not a published figure — it is arithmetic, and it changes if you print at a different resolution. |
| Digital submission minimum | 600 pixels wide and 750 pixels tall | Stated as a minimum, so larger is fine. Exactly 4:5 — note this is NOT the same ratio as the printed size, so a file cropped for print is the wrong shape here. |
| Digital file size | 50KB and no more than 10MB | Both bounds matter. Under 50KB is rejected as well as over 10MB — Compress JPG to 50KB targets the floor rather than dropping beneath it. |
| Background | plain cream or light grey | No resize can change a background. When the wall behind you is wrong, Remove Image Background replaces it with a plain colour before you resize. |
Only the UK is tabulated because only GOV.UK could be read directly at the source. The US, Canadian and Australian passport sites refuse automated access, and this site does not republish official figures it has not verified — check travel.state.gov, canada.ca or passports.gov.au for those.
How to resize a photo to passport dimensions
- 1
Start from the cropped photo
Add the already-cropped headshot. Resizing a full portrait will not produce a valid passport photo, because the head-height rule is about proportion and resizing cannot change it.
- 2
Decide print or digital
They are different targets. For print, work from the millimetre size and the resolution you will print at. For an online application, work from the digital minimum your authority publishes.
- 3
Enter the pixel dimensions
Type the width and height. With the aspect-ratio lock on, entering one dimension calculates the other — useful for confirming your crop is already the right shape, since a mismatch means it is not.
- 4
Check the file size afterwards
Export as JPEG and compare the result against the accepted range. Dimensions and file size are separate rules and portals check both.
Pro tip: Resize downwards from a generous crop rather than upwards to hit a target. An identity photo is examined closely, sometimes by automated facial comparison, and an upscaled image has no more detail than the smaller one it came from — it just has more pixels carrying the same information. Crop from the highest-resolution original you own, and let the passport dimensions be a reduction. When you also need a print copy, keep the large crop as your master and produce each size from it.
Troubleshooting: If a portal rejects the dimensions, check whether it wants the digital or printed specification — they are different shapes for the UK, and a photo prepared for one fails the other. If it rejects the file size, check both bounds: over-compressing below 50KB and no more than 10MB is refused just as an oversized file is. If the photo looks stretched, the crop was not the target ratio and the ratio lock was off. And if the application is rejected on the photo itself rather than the file, the cause is usually head height, which is a cropping problem — no resize will fix it.
Framing comes first: Crop Passport Size Photo Online covers the head-height rule that decides whether a photo is accepted at all. If the background does not meet the specification, Remove Image Background replaces it with plain white, blue or red. For file-size limits on application portals, Compress JPG to 50KB and Compress JPG to 20KB hit the common targets. For a portrait with no published rules to satisfy, Crop Image for CV/Resume, or the full Resize Image tool for any other dimensions.
Frequently asked questions
What pixel size is a passport photo?
There is no single answer, because published specifications are in millimetres and pixels depend on the print resolution you choose. The UK's 45mm high by 35mm wide print size works out to roughly 413 × 531 px at 300 DPI. For online submission the UK instead asks for at least 600 pixels wide and 750 pixels tall, which is a different shape entirely.
How do I convert passport photo millimetres to pixels?
Divide the millimetres by 25.4 to get inches, then multiply by the dots per inch you are printing at. At 300 DPI a 35mm width becomes about 413 pixels. The DPI is your choice rather than something the specification dictates, which is why the same passport size appears online as several different pixel figures.
Can I just resize an ordinary photo to passport size?
No, and this is the most common mistake. Passport rules constrain how much of the frame your head occupies, and resizing scales everything together so that proportion never changes. Crop to the required framing first; resizing is only the final step that lands the file on the right dimensions.
Should I resize for print or for digital submission?
Whichever you are actually submitting — they are separate specifications. The UK publishes a printed size in millimetres and a separate digital minimum in pixels, and the two are not even the same aspect ratio. Preparing for the wrong one produces a file that is correctly made and still rejected.
Is my passport photo uploaded to a server here?
No. The resize runs entirely inside your browser on your own device — the photo is never uploaded, stored, or logged, and the tool works with your connection switched off. An identity document photo is exactly the kind of file that should not be sent elsewhere to be processed.
Looking for the full-featured version? Open the main Resize Image tool.
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