100KB Extension v1.1.1: Compress & resize files in 0ms directly in Google Chrome
Remove background from images and passport photos online for free in full original quality. Unlike other expensive alternatives, we do not reduce quality. Formatted for HMPO UK Passport.
To ensure your photo is accepted by the United Kingdom official platform, it must meet the following strict criteria:
Disclaimer: These requirements are verified based on official guidelines. However, platform rules and guidelines can change. Always consult the official HMPO UK Passport portal before final submission.
Her Majesty's Passport Office (HMPO) is notoriously strict regarding digital shadows, glare, and background hues, frequently rejecting unverified selfies. By using this automated formatting tool, your picture is instantly resized to the mandatory 45mm tall by 35mm wide dimensions while preserving the required high-definition clarity. Whether you need a solid white background for an official passport photo or a transparent PNG cutout for graphic design, removing busy room backgrounds manually is tedious.
100kb.in integrates WebAssembly ONNX Runtime Web with WebGL/WebGPU acceleration to run studio-grade neural network portrait segmentation directly on your graphics card. It calculates alpha matte masks, isolates hair strands and body contours, and replaces room backgrounds with pure white (#FFFFFF) or transparent pixels in under 2 seconds—without sending your private photo to cloud servers.
| Processing Mode | Neural Model / Engine | Alpha Channel Depth | Output Format | Precision Ceiling |
|---|---|---|---|---|
| Portrait Cutout | ONNX Runtime Web (U-Net AI) | 8-bit Smooth Alpha Matte | PNG (Transparent) | Studio Hair & Edge Cutouts (<15ms) |
| White Background Composite | Solid Color Canvas Rasterizer | 24-bit RGB (White #FFFFFF) | JPG / PNG | 100% (Passport, Visa & ID Portals) |
| E-commerce Product Isolation | Edge Contrast & Boundary Detection | 8-bit Anti-Aliased Mask | PNG | Shopify, Amazon & Etsy Product Photos |
Follow these simple steps to ensure your file meets all requirements for HMPO UK Passport.
Upload any portrait photo from your phone or camera. Stand roughly 1.5 meters away from the camera in front of a plain, light-coloured wall with no objects visible.
Our local AI model isolates human subjects and removes background pixels. Align the on-screen guides so that the distance from your chin to the top of your head measures exactly 29 to 34 millimeters.
Select Solid White for passport/visa photos or Transparent PNG. Save the final JPEG document, optimized to satisfy the strict 50KB - 10MB digital parameters for the UK GOV portal.
Answers to common questions regarding requirements for HMPO UK Passport.
Lead WebAssembly Systems Engineer at 100KB Tools. Technical specifications researched and cross-verified against official ICAO Doc 9303 Part 9 standards, ISO/IEC 10918-1 JPEG specifications, and PDF/A ISO 19005 guidelines.
Create biometric passport, visa, and ID photos online. Crop, adjust dimensions, remove background, and download official 4x6" and A4 print sheets.
Reduce image file size in KB or MB online. Compress JPG, PNG, and WebP files securely without changing dimensions.
Resize image dimensions in pixels, mm, cm, or inches online. Crop photos in circle, square, or rounded corner shapes.
Upload Portrait or Passport Photo
Drag and drop your files here or click to browse
Images are processed within a strict, isolated environment. To guarantee your privacy, all data is immediately discarded upon completion.