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Reduce signature image size under 10 KB online for free. Compress scanned signature for bank and exam portal form uploads.
Some older government exam portals and OMR form upload systems impose a strict 10 KB cap on signature images — even tighter than the common 20 KB limit. This tool aggressively reduces file size while keeping your signature lines legible and ink clearly defined.
How to Use
Upload your scanned signature photo or draw a clean digital signature on screen.
Remove paper background shadows, boost black ink contrast, and lock file size under 10 KB.
Export your verified signature image ready for online application submissions.
95 KB → 8 KB
Under 10 KB cap
Ink lines legible on white paper
By downsampling unnecessary background noise, sharpening black ink edges, and applying high-efficiency JPEG quantization, the tool compresses file size down to 5–9.9 KB while preserving fine stroke details.
Strict recruitment portals like IBPS, SBI Clerk/PO, SSC GD, and several state public service commissions strictly enforce a 10 KB upper limit for signature uploads.
A 10 KB limit is an extremely tight ceiling. JPEG compresses grayscale paper and ink smoothly, allowing government and banking portals to verify signatures cleanly. Squeezing a photo into a 10 KB PNG requires reducing the image to a low-color palette, which can cause pixelation and broken stroke lines if paper shadows are present. To get a crisp 10 KB PNG, ensure the background is pure transparent or solid white with clean, high-contrast ink.
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