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ExactKB

Online Photo & Signature Resizer for Portals

Resize photos & signatures to exact portal KB & DPI standards. 100% private in-browser RAM.

🔒 100% In-Browser RAM⚡ Instant Processing🎯 Exact KB Guarantee
1-Click Quick Exam Presets
Photo:20–50 KB(200×230px @ 200DPI)
Signature:10–20 KB(140×60px)
Photo must be taken without spectacles/cap on a solid light/white background.
🔒Processed 100% locally in your device RAM • Zero Cloud Storage
💡

Official SSC Note: SSC mandates live webcam capture for candidate photos inside their portal. Use Slot 1 for offline records or proceed straight to Slot 2 (Signature: 10–20 KB).

1

Passport Photo (Portrait)

200×230px • 200 DPI
20–50 KB
2

Candidate Signature (Landscape)

140×60px • 10–20 KB
10–20 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:

Popular Portal Presets

All 25+ Portals →
SSC Portal

SSC CGL / CHSL

Photo: 20–50 KB (200 DPI) • Sig: 10–20 KB

UPSC OTR

UPSC CSE

Photo: 20–300 KB • Name & Date • Sig: 20–300 KB

Banking

IBPS PO

Photo: 20–50 KB (200 DPI) • Sig: 10–20 KB

NTA Portal

NEET UG

Photo: 10–200 KB (80% Face) • Sig: 4–30 KB

DS-160

US Visa

Photo: 600×600 px (300 DPI) • 2×2 Inch

State Bank

SBI Clerk

Photo: 20–50 KB • Sig: 10–20 KB (Black Ink)

View all 25+ portal specifications →

Frequently Asked Questions

How does ExactKB achieve exact target file size without losing quality?

ExactKB uses a binary-search optimization loop inside your browser's local RAM. It iteratively refines JPEG quality increments in memory in milliseconds until the output lands squarely within portal bounds (e.g. 20–50 KB or 10–20 KB).

Why do SSC and UPSC portals reject photos that are too small (under 20 KB)?

Automated verification algorithms enforce a minimum file weight to block over-compressed or pixelated images. When clean photos naturally compress below 20 KB, ExactKB injects standard benign JPEG COM (0xFF 0xFE) comment bytes to safely lift the file size above 20 KB without modifying a single pixel.

How does ExactKB guarantee 200 DPI or 300 DPI for portal uploads?

Standard phone cameras encode 72 or 96 DPI metadata, triggering automated rejections on portals like SSC, UPSC, and Passport Seva. ExactKB directly injects the JFIF APP0 binary header with density units set to dots-per-inch (200 or 300 DPI), ensuring instant server compliance.

Is my biometric photo and signature secure on ExactKB?

Yes, completely. Unlike legacy resizers that upload your biometric photos to remote servers, ExactKB executes 100% client-side in your device's local memory. No images or signatures are ever transmitted across the internet.