Compress Signature to 10KB Online

Compress scanned signatures, stamps, and thumb impressions to strictly under 10KB for online applications and government portals.

Drop your signature image below. ImgMin's 10KB preset targets 10 KB or less with zero server upload. Hand-signed documents contain your legal signature — our client-side engine guarantees your signature never touches a cloud server or database.

Click, drag or paste images here

Maximum 20 images at a time

Advanced Settings

Target size Choose a common limit or enter a custom value

Custom limit (KB, optional)

Output format

Leave blank for normal compression. 1 KB = 1000 bytes. With a target, JPEG/WebP quality follows the selected strategy. PNG keeps transparency and may exceed the target.

Resize

Platform preset

Width (px)

Height (px)

Batch Rename

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100% Private

Images never leave your browser

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Instant Results

Hardware-accelerated Canvas API

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Batch Processing

Process up to 20 files with ZIP download

Specifications & Target Limits

Requirement / Property	Specification
Target File Size	≤ 10 KB (Strict limit for online exam portals)
Recommended Dimensions	200 × 100 px to 400 × 200 px (3:1 or 2:1 aspect ratio)
Output Format	JPEG / JPG (white background)
Primary Use Cases	Exam portals (UPSC, GATE, SSC), banking KYC, contract signing
Security Verification	100% Client-side. Check DevTools Network tab: zero network transmission.

How It Works (Step-by-Step)

Upload your signature photo Take a photo of your paper signature or upload a scanned graphic.
Target 10KB compression The tool automatically activates the 10KB target and sets a clean white JPEG background.
Download compliant signature Download the verified ≤ 10KB signature file ready for immediate portal upload.

Frequently Asked Questions

Why do portal application forms require signatures under 10KB?

Government and academic examination portals handle millions of concurrent applicants. Enforcing strict 10KB or 20KB limits on signatures minimizes portal database storage and ensures rapid processing.

How can I get my signature photo down to 10KB without blur?

Crop out unnecessary paper background so only the signature remains. In ImgMin Advanced Settings, set the width to 300px or 400px. At that dimension, a clean signature compresses cleanly under 10KB while remaining razor sharp.

Are my signatures stored or saved anywhere?

Never. ImgMin runs 100% inside your browser's local memory. No server APIs, no cloud backups, no tracking. Your signature stays exclusively on your machine.