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✍️ Signature & Form Compressor — No Upload
Compress Image to 20KB Online Free
Reduce any photo or signature scan to under 20KB instantly in your browser. No upload required. Perfect for SSC, UPSC, state board, and banking exam signature submissions.
Drop your image or signature here
Click to browse · Drag & Drop · Ctrl+V to paste
JPG, PNG, WEBP · Max 20MB
💡 Press Ctrl+V to paste a copied image directly
Original
Compressed
20KB — The Standard for Digital Signatures on Exam Portals
Every major Indian government exam portal has strict image size rules. For signatures, 20KB is the most common maximum — both SSC and UPSC require scanned/handwritten signatures between 10KB and 20KB. Submitting a larger file causes outright rejection, while a compressed-but-blurry signature may fail manual review. This tool hits the 20KB target precisely and uses the highest possible quality at that size.
Common 20KB Requirements — Exam Portal Guide
| Portal / Exam | Photo Max | Signature Max | Format |
|---|---|---|---|
| SSC CGL / CHSL | 50KB | 20KB | JPG |
| UPSC Civil Services | 300KB | 20KB | JPG |
| RRB NTPC / Group D | 50KB | 20KB | JPG |
| Bank PO / Clerk | 35KB | 20KB | JPG |
| State PSC Exams | 50KB | 20KB | JPG |
Tips for 20KB Signature Compression
Start with a clean, well-lit scan of your signature on white paper. A white-background JPG compresses significantly better than a scan with shadows or grey background. If your signature scan has a dark or coloured background, use the Background Color option to force white — this dramatically improves compression while keeping the signature crisp.
Frequently Asked Questions
Will my signature look blurry at 20KB? ▾
A signature scan on a white background compresses extremely well at 20KB. A simple black-ink signature at 200×80px will remain crisp and legible at 20KB. Signatures with complex patterns, gradients, or decorative elements may show slight artefacts, but will still be accepted by automated portals.
Does the SSC portal require exactly 20KB or under 20KB? ▾
SSC requires signature files to be between 10KB and 20KB. This tool compresses to at or under 20KB. If your signature compresses to 8KB, it's within range. The portal rejects files above 20KB, not files below — so targeting 20KB is safe.
Is my image uploaded to a server? ▾
No. All compression runs locally in your browser using the HTML5 Canvas API. Nothing is sent to any server. Your image never leaves your device.
What if my image is already under 20KB? ▾
The tool will show the image as-is with no compression needed. You can still download it via the download button. If you need to increase the file size (uncommon for signatures), use our Increase KB tool instead.