UK Passport Photo Size and Requirements

Requirements at a glance

Size	35 × 45 mm (1.378 × 1.772 in)
Pixels	413 × 531 px
DPI	300
Background color	grey (#EEEEEE)
File size limit	50–10240 KB
Source	gov.uk
Last checked	2026-11-02
Spec code	`uk-passport`

Frequently asked questions

What size is the UK Passport photo?

It is 35 × 45 mm (1.378 × 1.772 in). The digital file is 413 × 531 px at 300 DPI.

What background color does the UK Passport photo need?

This spec uses a grey (#EEEEEE) background.

What file size is allowed for the UK Passport photo?

The file should be between 50 KB and 10240 KB.

Can I use this spec with the IDPhoto.ai API?

Yes. Set specCode to "uk-passport" in a POST /v2/makeIdPhoto request. The Passport Photo API reference describes the full request and response.

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For people

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For developers

Send this spec code to the Passport Photo API.

curl -sS -X POST "https://api-us.idphotoapp.com/v2/makeIdPhoto" -H "Content-Type: application/json" -d '{"apiKey":"YOUR_API_KEY","apiSecret":"YOUR_API_SECRET","imageBase64":"BASE64_IMAGE","specCode":"uk-passport","outputFormat":"IMAGE_BASE64"}'

Passport Photo API reference · Get API key

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IDPhoto.ai is an independent service and is not affiliated with any government agency. Rules change, so always check the issuing authority’s current photo rules before you submit a photo.