100KB Extension v1.1.1: Compress & resize files in 0ms directly in Google Chrome
Optimize signatures and fingerprints under strict size limits. Clean background contrast and scale dimensions. Optimized to to 30KB.
Hitting a precise 30KB file size limit can be frustrating when dealing with university admissions or localized government portals. If your file is even one kilobyte over, the system will reject your upload. Our intelligent compressor carefully balances pixel density and quality, guaranteeing your final image weighs in exactly at or below 30KB.
| Signature Format | Thresholding Algorithm | Alpha & Contrast Depth | Target Size Ceiling | Portal Compatibility |
|---|---|---|---|---|
| Scanned Paper Signature | Adaptive Otsu High-Pass Binarization | Paper Shadow Eraser (#FFFFFF White) | 10KB – 20KB | 100% (SSC CGL, IBPS, UPSC, SBI PO) |
| Phone Camera Photo Signature | Luminance Contrast Sharpening | Monochrome Ink Extraction | 10KB – 30KB | 100% (Government Recruitment Portals) |
| Digital Tablet Signature | Vector Ink Curve Smoothing | Transparent PNG / Pure White JPG | 10KB – 50KB | PDF Signatures & Legal Contracts |
Follow these simple steps to safely compress your file to 30KB.
Choose the photograph, passport copy, or digital signature that needs to be reduced.
Our software automatically trims invisible data and scales down the resolution to smoothly cross the 30KB threshold.
Retrieve your perfectly sized image and bypass frustrating file size upload restrictions instantly.
Answers to common questions about compressing to 30KB.
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.
Combine a passport photo and signature vertically or horizontally into a single image, keeping the combined file under 100KB.
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.