Guarantees uploaded images match government, KYC, visa, and exam portal file size requirements using binary search canvas quality optimization.
Step-by-Step Client-Side Workflow
1. Local Canvas Rasterization: Loads your signature or photo onto an HTML5 canvas and applies a solid white background required by government portals.
2. Binary Search Quality Optimization: Runs 8 quality iterations to find the exact highest JPEG compression factor that fits strictly under your target KB threshold.
3. Dimension Precision: Optional pixel dimension overrides allow you to export exact 200x200 passport photos or 140x60 signature crops.
Why Use VaultTools Zero-Upload Architecture
Zero Portal Rejections: Never get rejected by SSC, UPSC, PAN card, or visa portals with error messages like "File must be between 10KB and 20KB".
Maximum Visual Clarity: Unlike crude compressors, binary search ensures the maximum possible image quality that fits within your exact limit.
100% Private KYC Processing: Your passport photos, IDs, and signatures never leave your device memory.
Frequently Asked Questions
Why do government portals require images under 20 KB or 50 KB?
Many government and exam portals use legacy database architectures that enforce strict file size caps (often under 20KB for signatures and under 50KB for passport photos).
Can I set custom width and height in pixels?
Yes! You can specify custom width and height overrides, or use one-click presets like 200x200 (Square ID) or 140x60 (Standard Signature).