Compress Signatures for Online Forms

Easily reduce your scanned signature to exactly 10KB or 20KB for SSC, Banking, and PAN card applications. Clean white backgrounds, crisp black text.

No Upload100% FreePrivate

Drag & drop your files here

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Supports: JPG, JPEG, PNG

How to Use Signature Compressor to 10KB/20KB | ToolXHub

1

Upload Signature

Sign on plain white paper, take a clear photo, and upload it here.

2

Auto-Optimize

The tool compresses the file size down to the strict 10-20KB limit.

3

Save & Upload

Download the compressed JPG and upload directly to the exam portal.

Features

10KB - 20KB Targeting

Built specifically for the ultra-low size limits of signature uploads.

Maintains Legibility

Optimized compression ensures ink strokes remain dark and readable.

Local Processing

Your signature is sensitive data. We process it 100% locally.

Who Needs This Tool?

SSC & RRB Exams

Most Indian government job portals restrict signatures to 10-20KB.

Banking (IBPS/SBI)

Requires clear signatures with very small file sizes.

The Challenge of Signature Uploads

While a face photo can survive compression, a digital signature must remain crisp and dark to be valid. The challenge is that government portals like SSC and IBPS impose incredibly strict file size limits on signatures—often capping them at 10KB or 20KB. Standard compression tools tend to introduce heavy artifacts, making the ink look blurry or grey.

Optimized for Ink and Paper

Our Signature Compressor is tuned differently than our standard photo compressors. It prioritizes the contrast between the dark ink and the white paper, discarding unnecessary color data to hit the 10KB-20KB targets without destroying the legibility of your actual signature. Furthermore, because a signature is highly sensitive biometric data, running the processing locally via JavaScript ensures your identity cannot be intercepted.

Frequently Asked Questions

How do I reduce my signature to 10KB?
Upload your signature photo to our tool. Our algorithm will aggressively compress the data while maintaining the dark lines of the ink, bringing it under 10KB-20KB.
Why is my signature getting rejected?
Usually, it's because the file size is too large (over 20KB), the dimensions are wrong, or the background is dark/grey instead of white.
How should I photograph my signature?
Sign on a completely blank, unlined piece of white paper using a black or dark blue pen. Photograph it in bright daylight to avoid shadows.
Is it safe to upload my signature?
We do not upload your signature. ToolXHub operates entirely on your device (client-side), meaning the signature never leaves your phone or computer.
What is the standard dimension for an online signature?
For many forms (like PAN card), the standard dimension is 4.5 cm (width) by 2.0 cm (height) at 200 DPI.
Can I convert a PNG signature to JPG?
Yes. If you upload a transparent PNG signature, our tool will automatically give it a white background and save it as a compliant JPG.
Why does my signature look blurry after compression?
Compressing to 10KB removes a lot of data. To minimize blur, ensure you crop the image tightly around the signature before compressing.
Does this work on mobile?
Yes, you can take a picture with your phone's camera and use this tool directly in your mobile browser to compress it instantly.

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