Resize a signature to 20 KB
Signature upload boxes are the strictest on most forms: SSC requires 10–20 KB at 4 × 2 cm in JPEG, and many other exam portals use similar bands. This preset targets a safe 15 KB and warns you if the result drops under 10 KB (yes — being too small can fail validation too).
A signature is the last thing you should ever upload to an unknown server. This tool never uploads it: the file is re-encoded by your own browser and works with the network unplugged.
Signature preset: JPEG, aimed at 15 KB (safe inside a 10–20 KB band).
Drop images here — or click to browse, or paste with Ctrl+V
JPG · PNG · WebP — processed on your device, never uploaded
How it works
- Open this page — the compressor is already set for “Resize a signature to 20 KB”.
- Drop your image into the box, click to browse, or paste it with Ctrl+V.
- The tool re-encodes the image on your own device until it fits the target — nothing is uploaded.
- Check the preview and file size on the result card, then download.
Typical signature-box requirements (2026 exam guidance)
| Requirement | Specification |
|---|---|
| SSC signature | 4 cm × 2 cm, 10–20 KB, JPEG, black ink, running hand |
| UPSC signature | 20–100 KB, 350–500 px |
| PAN signature | Under 50 KB, JPEG, black/dark blue ink on white paper |
| General rule | Sign on plain white paper, crop tight to the ink, scan sharp |
Compiled July 2026 from the current notices and portal guidance. Requirements change between recruitment cycles — always confirm against the official notification for your application before submitting.
Tips for a first-try acceptance
- Crop before compressing: empty white margins waste bytes and shrink your actual signature in the box the reviewer sees.
- Use a bold-tipped black pen. Thin ballpoint lines fade at small dimensions; bold strokes survive both scanning and compression.
- If your result lands under 10 KB, the tool warns you — rescan at higher resolution or use a slightly larger crop so the output sits inside the band.
- Sign naturally in your usual running hand — verification compares this image against your signature at the exam centre.
Frequently asked questions
My signature file is 8 KB and the form wants at least 10 KB. How do I make it bigger?
Start from more pixels, not padding: rescan at a higher DPI or take a closer photo of the signature. A larger, sharper source compresses down to land naturally inside the 10–20 KB band — this preset maximizes quality, so bigger inputs produce bigger (still-compliant) outputs.
Can I draw my signature on screen instead of scanning?
For exam forms, no — verification compares against your real handwritten signature, so scan the real thing. (Drawn signatures are fine for informal documents, but that’s a different job than passing an SSC review.)
JPEG makes my signature edges look fuzzy. Is that a problem?
At 15 KB and sensible dimensions the fuzz is minimal and portals accept it — their own samples are JPEGs. Maximize crispness by cropping tight and starting from a high-contrast scan (true black ink on white paper).