Free signature image resizer
Resize signature online
Resize a scanned signature to the exact pixels a form asks for, then compress it if there is a KB limit. Built for SSC, UPSC, PAN, bank, job and online application forms. Fit mode is on by default so the pen stroke is never cropped.
Kodotools · June 2026 · No uploads to our servers
JPG, PNG, WebP, HEIC
Upload a signature
to preview resize
Upload a signature to start
A signature image resizer that keeps the stroke clean
Most application forms reject a signature that is the wrong pixel size. This resizer sets a clean 300×80 signature by default, or type any width and height your portal asks for. Everything runs in your browser — the file never leaves your device.
Resize first, then hit the KB limit
Set the pixels here, then if the form also caps file size, resize your signature to 20 KB. Doing it in that order keeps the signature sharp and still small enough to upload.
Who it's for
Who needs to resize a signature?
Almost every online application asks for a scanned signature at a set pixel size and file size. If a portal keeps rejecting your upload, resizing the signature first is usually the fix.
Exam applicants
SSC, UPSC and state exam forms ask for a photo and signature at an exact size — often 140×60 px at 10–20 KB.
Bank & PAN forms
Net-banking, PAN and KYC uploads want a clean signature that fits inside the box without being cropped.
Job applications
PPSC, FPSC, NTS and private job portals commonly accept a 300×80 signature under 20 KB.
University admissions
Admission and scholarship portals often reject a signature that is too large in pixels or KB.
Big phone scans
A photo of a signature is usually far too large. Resize it down to the exact dimensions the form needs.
Then the KB limit
If the form also caps file size, resize the signature to 20 KB after setting the pixels.
Signature upload size — quick reference
Different portals ask for different signature dimensions and file sizes. Use this as a starting point, then confirm the exact numbers on your live application page.
| Where you are uploading | Common signature target |
|---|---|
| Standard online form | 300×80 px, JPG, under 20 KB |
| SSC / exam forms | 140×60 px, 10–20 KB (photo + signature size) |
| UPSC / bank applications | Fit inside the box, JPG, small KB size |
| PPSC / FPSC / NTS | 300×80 px, JPG, under 20 KB |
| File size cap | Resize signature to 20 KB |
How it works
How to resize a signature
Upload the scan
Drop in a photo or scan of your signature on white paper.
Set the size
Use the 300×80 preset or type the exact width and height your form wants.
Download the JPG
Save the resized signature, then compress to 20 KB if needed.
Why it matters
Why resize a signature before you upload
Forms reject the wrong size
Most portals check the signature's width, height and file size the moment you upload. Getting the pixels right first is what makes the file accept cleanly instead of bouncing back with an error.
Resize first, compress second
Set the dimensions here, then if there is a KB cap, resize the signature to 20 KB. Doing it in that order keeps the pen stroke sharp instead of muddy.
Your signature stays on your device
Resizing runs entirely in your browser. Nothing is uploaded to our servers, so a sensitive signature never leaves your computer or phone.
FAQ
Resize signature — common questions
How do I resize a signature online?
Upload your scanned signature, pick the 300×80 preset or type the width and height your form needs, then download the resized JPG. It all happens in your browser.
What is the standard signature upload size?
Many forms accept a 300×80 px signature under 20 KB, while SSC-style exam forms often ask for 140×60 px at 10–20 KB. Always check the exact requirement on your application page.
Should I crop or fit the signature?
Use fit mode so the pen stroke is never cut off. This signature image resizer defaults to fit inside, which letterboxes the signature instead of cropping it.
How do I resize my signature to 20 KB?
Resize the pixels here first, then open resize signature to 20 KB to bring the file size down without losing the stroke.
Do you store my signature?
No. The signature is processed inside your browser only and is never uploaded to our servers.
Guides
Resize without guesswork
Pixel-perfect walk-throughs for social profiles, covers, forms, and thumbnails.
WhatsApp DP size guide 2025
Profile photo, status, and group icon pixel dimensions.
Read guide →Resize an image without losing quality
Crop, fit, export settings, and sharp results for social and portal uploads.
Read guide →PPSC photo size guide
Pixels, format, resize, and upload checks for PPSC forms.
Read guide →Ready to resize your image?
Jump back to the resizer and export the exact dimensions in one pass.
Resize signature →