Signature Resizer — Reduce Signature Size in KB
Signatures have the strictest limits on most forms, often just 10 to 20 KB. Those limits are already filled in below. Add a photo or scan of your signature, then choose your form's size.
Tip for better results
Sign on plain white paper with a dark pen and photograph it in good light. Then open “Crop, rotate & enhance”, crop close around the signature and turn on “Clean signature background” to whiten the paper and darken the ink.
Signature size by exam
| Exam | Item | Dimensions | File size |
|---|---|---|---|
| SSC | Signature | 140 × 60 px | 10–20 KB |
| UPSC | Signature | 140 × 60 px | 10–20 KB |
| Banking | Signature | 140 × 60 px | 10–20 KB |
| Railway RRB | Signature | 140 × 60 px | 10–30 KB |
| NTA | Signature | 140 × 60 px | 4–30 KB |
| NDA | Signature | 140 × 60 px | 10–20 KB |
| UPSSSC | Signature | 140 × 60 px | 10–20 KB |
| UPPSC | Signature | 140 × 60 px | 5–20 KB |
These are common values and can change. Always confirm the exact size and KB limit in your official notification before uploading.
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Frequently asked questions
How do I reduce my signature size in KB?
Add your image above. The 10–20 KB limit is already filled in, so enter the width and height your form asks for, check the final size and download the JPG.
Will the image be stretched to reach 10–20 KB?
No. The tool lowers the JPG quality first, so the shape stays the same. If the form needs a different shape, the image is trimmed to fit, and you can move the crop box to choose what stays.
What if it can't reach this size?
Very detailed or very large images may need smaller pixel dimensions. The final dimensions and file size are shown before you download, so check them against your form.
Is my image uploaded anywhere?
No. Everything runs in your browser, so your photo or signature never leaves your device. It's free, with no sign-up and no watermark.