UK Passport & Visa Photo Resizer (35×45 mm / 413×531 px)
Format and resize photos to the official 35×45 mm (413×531 pixels at 300 DPI) standards specified by HM Passport Office, DVLA, and UK Visas and Immigration (UKVI).
Strict 100% In-Browser Binary Compression
Tested on 50+ official Indian exam engines (SSC, UPSC, IBPS, NTA, Passport Seva). Zero server upload, zero data collection.
Her Majesty's Passport Office (HM Passport Office) and UK Visas and Immigration (UKVI) mandate strict photo specifications for digital passport renewals and visa submissions. Online applications require a digital photo measuring at least 413 pixels wide by 531 pixels high (representing the physical standard 35 mm wide by 45 mm high at 300 DPI), with head height between 29 mm and 34 mm (70-80% of photo). ResizeInKB configures your image to meet these precise UK standards in seconds.
How to UK Passport & Visa Photo Resizer (35×45 mm / 413×531 px)
- 1Upload your portrait photo taken in neutral lighting with a light grey or cream background.
- 2Our tool automatically applies the UK Passport standard aspect ratio (35×45 mm / 413×531 px).
- 3Use the frame tool to ensure your head and shoulders are upright and eyes are centered.
- 4Download your verified HM Passport Office compliant image file.
Target Specifications
Official Portal Upload Criteria Comparison
| Exam / Portal Name | Photo Limit | Signature Limit | Dimensions | Required Format |
|---|---|---|---|---|
| SSC (CGL/CHSL/MTS) | 20 KB - 50 KB | 10 KB - 20 KB | 3.5 x 4.5 cm | JPG / JPEG |
| UPSC Civil Services | 20 KB - 300 KB | 20 KB - 300 KB | 350x350 px min | JPG / JPEG |
| IBPS Bank Exams | 20 KB - 50 KB | 10 KB - 20 KB | 200x230 px | JPG (Black Ink) |
| NEET / JEE (NTA) | 10 KB - 200 KB | 4 KB - 30 KB | 4x6 Postcard | JPG / JPEG |
How Client-Side Image Binary Compression Works Under the Hood
When you select a target size (e.g., 20KB or 50KB), ResizeInKB executes an in-browser binary search algorithm using the HTML5 HTMLCanvasElement.toBlob() API. It dynamically adjusts JPEG quantization matrices and pixel dimensions directly inside your browser's V8 JavaScript engine memory. Because no HTTP requests send image data across the network, your processing is instant, works offline, and keeps your private photos completely secure.