KBCompress.com

Compress Image to Exact KB: Free Online Tool

Instantly compress any photo or signature to the exact file size required by government portals and exam applications. Runs entirely in your browser.

Your image never leaves this device. Processed entirely in your browser. Zero uploads. Zero privacy risk.

Drop your image here or click to upload

JPG, PNG, WebP. Max 50 MB

Why Government Portals Require Strict File Size Limits

India's government exam portals process millions of applications every year. From UPSC Civil Services to SSC CGL and IBPS banking exams, every portal enforces strict limits on photo and signature file sizes, usually between 10KB and 200KB. These limits exist because government servers handle heavy peak traffic during application windows. When crores of students apply at the same time, smaller file sizes reduce server load, prevent timeouts, and keep infrastructure costs down.

If your photo or signature is over the limit, the portal rejects the upload. Often there is no clear error message. Students miss deadlines or submit incomplete applications.

Common KB Limits Across Indian Government Exams

  • •UPSC Civil Services: Photo 40KB (300×350 px), Signature 20KB
  • •SSC CGL / CHSL / MTS: Photo up to 100KB (280×340 px), Signature 20KB
  • •IBPS PO / Clerk: Photo 50KB (200×230 px), Signature 20KB
  • •SBI PO and Clerk: Photo 50KB, Signature 20KB
  • •Railway RRB exams: Photo 50KB (200×230 px), Signature 20KB
  • •NEET / NTA portals: Photo 10KB minimum, 200KB maximum
  • •State PSC portals: Typically 50KB for photo, 20KB for signature

How to Use This Tool

  1. 1Select your exam from the dropdown above, or enter a custom KB target.
  2. 2Click the upload zone or drag your photo onto it.
  3. 3The tool compresses your image entirely in your browser. No internet connection is needed for this step.
  4. 4Download the compressed file and upload it to the exam portal.

The entire process takes under 5 seconds. Your original photo is never modified. The compression uses a binary search algorithm to hit the exact target size within ±2KB. It is not a rough approximation.

Why Client-Side Processing Matters

Your passport photo contains biometric information. A compressor that uploads your image to a server creates real privacy risks. Your photo could be logged, stored, or accessed by third parties. KBCompress processes everything on your device using the browser's built-in Canvas API. Nothing is ever transmitted to any server. You can even go offline after the page loads and the tool will still work.