Resize photos & signatures to exact portal KB & DPI standards. 100% private in-browser RAM.
Supports JPG, PNG, WebP, HEIC/HEIF • Automatically compresses to 100 KB
Photo: 20–50 KB (200 DPI) • Sig: 10–20 KB
Photo: 20–300 KB • Name & Date • Sig: 20–300 KB
Photo: 20–50 KB (200 DPI) • Sig: 10–20 KB
Photo: 10–200 KB (80% Face) • Sig: 4–30 KB
Photo: 600×600 px (300 DPI) • 2×2 Inch
Photo: 20–50 KB • Sig: 10–20 KB (Black Ink)
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).
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.
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.
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.