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ExactKB

UK Visa & Immigration Digital Photo Resizer

Format UK biometric visa photos to 35x45 mm standard (413x531 px at 300 DPI, under 250 KB) with plain background.

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1-Click Quick Exam Presets
Photo:20–250 KB(413×531px @ 300DPI)
Signature:10–50 KB(280×120px)
Color photo on plain cream or light grey/white background, 35x45 mm standard.
🔒Processed 100% locally in your device RAM • Zero Cloud Storage
1

Passport Photo (Portrait)

413×531px • 300 DPI
20–250 KB
2

Candidate Signature (Landscape)

280×120px • 10–50 KB
10–50 KB

Pre-Flight Upload Verification

Real-time validation against official TCS & NIC upload specifications

Awaiting Verification
1. File SizePending
2. DimensionsPending
3. DensityPending
4. Color SpacePending
5. FilenamePending
Know fellow aspirants? Help them prevent form rejection:

Official Candidate Resources & Verification Portals

UK Visas and Immigration (UKVI) PortalGOV.UK Official

Official British Government digital photo criteria and validation rules

Frequently Asked Questions & Compliance Insights

Why do portals reject images under 20 KB?

Many online application systems enforce strict minimum byte thresholds to reject over-compressed photos. ExactKB injects benign JPEG COM comments to bring files safely above the minimum limit without modifying pixels.

Why is 200 or 300 DPI density required?

Automated portal validators inspect the APP0 JFIF header. Standard smartphone photos default to 72 or 96 DPI, causing automated rejections. ExactKB writes standard 200/300 DPI headers directly into the stream.

How does ExactKB guarantee privacy?

All image compression, HEIC decoding, thresholding, and name/date stamp overlays run 100% locally in your browser’s volatile RAM. No image data is ever uploaded to any server.