Signature Resizer — Resize Your Signature to 10 KB or 20 KB
Sign on white paper, snap a photo, and turn it into a clean, correctly-sized signature JPEG that any exam form will accept.
Most forms want a signature that is 10–20 KB, JPEG, roughly 140×60 px (3.5×1.5 cm), on a white background. Upload your signature to PhotoResizer, crop it, and download at the exact KB the form needs.
Typical signature requirements
| Requirement | Photograph | Signature |
|---|---|---|
| Format | — | JPEG / JPG |
| File size | — | 10 KB – 20 KB (some forms up to 40 KB) |
| Dimensions | — | ≈140 × 60 px (3.5 cm × 1.5 cm) |
| Ink & paper | — | Black or blue ink on plain white paper |
| Style | — | Running signature — not block capitals |
How to get a clean signature image
Sign inside a rectangle on plain white paper with a dark pen, then photograph it in good, even light from directly above (no shadow). Upload that photo — the resizer crops out the paper, tightens it to the required box, and compresses to the exact KB.
A blurry or grey background is the top reason signatures get rejected. PhotoResizer keeps the strokes sharp while hitting the small KB target — something you can’t control reliably by re-saving in a gallery app.
How to resize a signature to 20 KB
- Photograph your signature — sign on white paper with a dark pen and take a clear, well-lit photo.
- Upload it to PhotoResizer — pick the signature option; the tool detects and crops the sign area.
- Set the target size — choose 10 KB or 20 KB (or a custom value) and the required pixel dimensions.
- Download the JPEG — a crisp, small signature file ready to upload to the exam form.
Frequently asked questions
How do I reduce my signature to 20 KB?
Upload your signature photo to PhotoResizer, set the target to 20 KB, and download — it compresses to that exact size while keeping the ink sharp.
What size should a signature be for exam forms?
Most Indian exam forms ask for a signature of 10–20 KB in JPEG, around 140×60 pixels (3.5×1.5 cm), on a white background.
Can I use a black or blue pen?
Yes. Black or blue ink on plain white paper both work well and scan cleanly.
Is the signature resizer free?
Yes — free, no sign-up, no watermark, and it runs privately in your browser.
Related guides
Resize your photo & signature now — free
Exam-ready presets for UPSC, SSC, IBPS, RRB & State PSC. Set exact KB and pixel size in seconds. No watermark, no sign-up, works right in your browser.
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