Why do exam portals require signatures strictly between 10 KB and 20 KB?

Recruitment servers for SSC, IBPS, and UPSC enforce strict server-side file validators. Signatures over 20 KB are blocked for bandwidth efficiency, while files under 10 KB are rejected to ensure biometric handwriting strokes remain identifiable on admit cards.

How does UploadRight compress my signature without making it blurry?

UploadRight combines binary-search iterative JPEG quantization with automated paper whitening. It isolates the high-contrast pen strokes while compressing the background to pure flat white (#FFFFFF), drastically reducing file size without losing stroke sharpness.

Are my legal signatures stored or transmitted to any servers?

Never. All compression and thresholding algorithms run 100% locally in your web browser memory via HTML5 Canvas and typed ArrayBuffers. Zero bytes leave your device.

Strict 10–20 KB Compliance · 200 DPI Header

Signature Compressor (10–20 KB)

Compress and whiten signatures to exact 140×60 px, strict 10–20 KB, and 200 DPI for SSC CGL, CHSL, GD, UPSC OTR, IBPS, and SBI registration portals.

Configuration

Signature Settings

Client RAM

Signature SettingsGovt Format

Target File Size:

Min KB

Max KB

✨ Auto-Whiten Paper200 DPI

Removes grey shadows, yellow casts, and dirty phone paper automatically.

Standard 140 × 60 px ratio (SSC / IBPS standard)

Image Adjustments

Brightness0

Contrast0

Signature Clean Up220

Cleans shadow casts or yellow paper to pure white.

Looking for a specific exam? Browse 38+ ExamsZero Storage

Upload & Process

Drag, Crop & Verify

Drop photo or signature here

Supports JPG, PNG, WEBP, HEIC up to 25 MB · Instant client-side RAM execution

Rule

Strict 10–20 KB Window

Portal uploaders automatically reject signatures over 20 KB or under 10 KB. Our binary search engine guarantees exact adherence.

Paper Whitener

Pure #FFFFFF Background

Built-in paper whitening eliminates smartphone shadow gradients, keeping black and blue pen ink crisp and legible.

Legal Safety

100% In-Browser RAM

Never upload your legal signature to untrusted remote servers. UploadRight processes every byte strictly on your device.

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