How to Resize Signature Online
- 1
Upload Your Image
Drag and drop your scanned digital signature in JPG or PNG format into the resizer box above.
- 2
Target KB Size
Most portals require 10KB to 20KB. The tool is pre-set to 15KB for maximum success.
- 3
Instant Compression
Our tool adjusts quality levels to reach your exact KB limit without making the signature blurry.
- 4
Download & Upload
Click "Resize Now" and download your perfectly formatted signature instantly.
Signature Size Requirements (SSC, UPSC, Bank)
| Portal Name | KB Size Limit | Dimensions (cm) |
|---|---|---|
| SSC (CGL, CHSL) | 10KB - 20KB | 4.0 x 2.0 |
| UPSC (CSE, NDA) | 20KB - 300KB | 3.5 x 1.5 (min) |
| IBPS / SBI PO | 10KB - 20KB | 140 x 60 px |
| Railway (RRB) | 10KB - 40KB | 3.5 x 1.5 |
Correct Digital Signature Example
Pro Tip: Use a black gel pen on plain white unruled paper for the best results when you compress signature image files.
Why Use Our Signature Resizer?
- No server uploads — 100% private.
- Hit exact 10KB or 20KB targets.
- Maintains ink clarity and contrast.
Common Rejection Reasons
- ✗ Blue ink used (many portals require black).
- ✗ Signature in capital/block letters.
- ✗ Shadows or lines on background paper.
Ready to Compress Your Signature?
Frequently Asked Questions
How to resize signature to 10-20KB online?
Upload your signature to PhotoResizer.in, set the target size to 15KB in the compressor, and click Resize. Your image will be processed instantly without any quality loss.
What is the signature size for SSC forms?
SSC requires signatures to be between 10KB and 20KB with dimensions of 4.0 cm x 2.0 cm. Black ink on white paper is strictly recommended.
How to resize signature for UPSC portal?
UPSC requires signatures to be at least 20KB. Use our 20KB specific tool to ensure your signature meets the minimum file size requirements while staying sharp.
Can I upload a PNG signature?
Most government portals prefer JPG or JPEG. If you have a PNG, our tool will automatically convert it to the correct format during the resize process.
Is my digital signature safe with this tool?
Yes! We use client-side processing, meaning your signature never leaves your device. It is processed entirely in your browser.