Updated · how we check
UK passport photo size
The UK passport form takes a photo of at least 600 × 750 px, 50 KB–10 MB, as JPG/JPEG. A file of 10,000,000 bytes or less passes whether the portal counts 1 MB as 1,000,000 or 1,048,576 bytes.
UK passport photo
JPG · 50 KB to 10 MB (51,200-10,000,000 bytes) · 600x750 px · white background
PixelFit aims between 51,200 and 10,000,000 bytes, so the file passes whether the form counts 1 KB as 1,000 or 1,024 bytes and 1 MB as 1,000,000 or 1,048,576 bytes.
Fit, background and padding crop to fill · white background · padding off
Saving presets is part of Pro.
The result appears here: the exact byte count, pixel size and quality, the size before and after, a preview and a download button.
The batch kit (one ZIP for up to 500 photos, several photos merged into one PDF) is part of Pro.
UK passport upload specifications
Values for the UK passport online application digital photo, copied from GOV.UK: Get a passport photo, digital photos, checked 31 October 2026; "not stated" means the source gives no figure for it.
| Upload | Pixel size | Print size | File size | Format | Background |
|---|---|---|---|---|---|
| Photo | 600 × 750 px minimum | not stated | 50 KB–10 MB | JPG/JPEG | plain light-coloured |
UK passport sizes in pixels and millimetres
Print sizes become pixels at a resolution (pixels = mm ÷ 25.4 × DPI); pixel sizes become print sizes the other way round. Computed for the UK passport uploads at 200 and 300 DPI.
| Upload | Aspect ratio | Megapixels | At 200 DPI | At 300 DPI |
|---|---|---|---|---|
| Photo | 4:5 | 0.450 MP | 76.2 × 95.3 mm | 50.8 × 63.5 mm |
What the UK passport KB limits mean in bytes
The UK passport photo range of 50 KB–10 MB is 51,200 to 10,000,000 bytes if you want a file that passes whether the portal counts a KB as 1,000 or 1,024 bytes and an MB as 1,000,000 or 1,048,576 bytes: a window of 9,948,800 bytes to aim for.
Estimated JPG file size for UK passport uploads
Estimated from sizes measured with sharp 0.35.5 / libvips 8.18.7 on public-domain sample images (31 October 2026), interpolated to each target size. Your own scan can land 30-50% either side, which is why the tool measures the real file.
| Upload | Pixel size used | Quality 60 | Quality 75 | Quality 85 | Quality 95 | Limit |
|---|---|---|---|---|---|---|
| Photo | 600 × 750 px | 41.6 KB | 53.9 KB | 71.9 KB | 130 KB | 50 KB–10 MB |
Will the UK passport photo fit the limit?
For the UK passport photo at 600 × 750 px, even quality 95, the highest setting estimated here, stays under 10 MB at about 130 KB, and quality 85 (71.9 KB) clears the 50 KB minimum.
UK passport rejection checklist
Upload checks computed from the UK passport specification; a file that fails any one of them is usually refused at upload or flagged later.
- Photo: File type is JPG/JPEG (a PNG or HEIC renamed to .jpg is still rejected).
- Photo: The UK passport photo file is no larger than 10 MB (10,000,000 bytes is safe whether 1 MB is read as 1,000,000 or 1,048,576 bytes).
- Photo: The UK passport photo file is at least 50 KB (51,200 bytes or more); files under the minimum are rejected even when they look sharp.
- Photo: Pixel size is 600 × 750 px or larger (a minimum, not an exact size).
- Photo: Background: plain light-coloured.
How to resize your photo for UK passport
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Take or scan the photo
Use a recent colour photo (background: plain light-coloured).
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Load the preset
Drop the file into the tool at the top of this page. The "UK passport photo" preset is already set to at least 600 × 750 px and 50 KB–10 MB, as JPG/JPEG.
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Check the result
Read the before and after sizes: the UK passport photo must end between 51,200 and 10,000,000 bytes. If it ends under 50 KB, open "Fit, background and padding" and tick the option to pad a file that ends up below the minimum. Download it.
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Upload and preview
Upload the file on the UK passport form and check the preview before you submit; verify the figures with the official notice first.
What the UK passport source also says
- The photo-code help page for photographers says the file must be a JPEG between 50 KB and 10 MB, and that the ideal image size is 3 MB.
UK passport compared with similar forms
Of these 5 forms, the UK passport photo limit of 10 MB is the most generous; a file made for a stricter form usually passes a more generous one only if it also meets the minimum and the pixel size.
| Form | Photo size | Photo file size | Signature file size |
|---|---|---|---|
| UK passport (this page) | at least 600 × 750 px | 50 KB–10 MB | none |
| UK visa | at least 600 × 750 px | 50 KB–6 MB | none |
| Kenya eCitizen | 207 × 207 px | no file-size limit stated | none |
| Canada passport | 1,200 × 1,800 to 3,000 × 4,500 px | 200 KB–5 MB | none |
| Hong Kong passport | at least 1,200 × 1,600 px | at most 5 MB | none |
Where the UK passport figures come from
The same figures appear in HM Passport Office help: photo code for digital passport photos, also checked on 31 October 2026.
Verify with the official UK passport notice before you submit: forms change between application cycles and the check on the live portal is final.
Sources
- GOV.UK: Get a passport photo, digital photos, HM Passport Office, checked 31 October 2026: gov.uk/photos-for-passports
- Measured by PixelFit with sharp 0.35.5 / libvips 8.18.7 on 31 October 2026, interpolated to each UK passport target size, on this sample: head-and-shoulders portrait, Pete Souza (Official White House photo), public domain: commons.wikimedia.org/wiki/File:President_Barack_Obama.jpg
- Same figures: HM Passport Office help: photo code for digital passport photos, checked 31 October 2026: passport.service.gov.uk/help/photo-codes
Frequently asked questions
What is the photo size for UK passport in KB?
The UK passport photo must be 50 KB–10 MB (keep it at or under 10,000,000 bytes to be safe), at least 600 × 750 px, as JPG/JPEG.
What is the signature size for UK passport?
The UK passport source sets no separate signature upload; only the photo is uploaded.
How do I resize my photo to 10 MB for UK passport?
Open the tool on this page with the UK passport photo preset, drop the file and download the result: it searches JPG quality until the file is under 10 MB and over 50 KB; at 600 × 750 px expect about 71.9 KB at quality 85. Nothing is uploaded.
What pixel size should the UK passport photo be?
At least 600 × 750 px.
Can I upload a PNG or PDF for the UK passport photo?
Only JPG/JPEG; PNG, PDF, HEIC are not listed. The tool can turn a PNG, WebP or (in Safari) HEIC file into JPG while it resizes.
Related
Similar forms
- UK visa photo size 50 KB–6 MB
- Kenya eCitizen photo size no file-size limit stated
- Canada passport photo size 200 KB–5 MB
- Hong Kong passport photo size at most 5 MB
- Taiwan passport photo size at most 5 MB
- Pakistan passport photo size at most 3 MB
Compress to the UK passport limits
- Compress an image to 10 MB UK passport photo limit 50 KB–10 MB
Resize to the exact size
- Resize an image to 600×750 px UK passport photo
- Image resizer (any size and KB target)
Change the file format
- PNG to JPG UK passport accepts JPG/JPEG
- WEBP to JPG UK passport accepts JPG/JPEG
- HEIC to JPG UK passport accepts JPG/JPEG