Resize Image to 20KB — Compress for Signature Upload

Compress your signature to under 20KB in seconds — built for SSC, UPSC, Railway, and banking exam portals. 100% private, no server upload.

Drop your signature image here or click to upload

Supports JPG, PNG, WebP — output is always JPEG

How to Use

Upload your signature image — Select or drag-and-drop any JPG, PNG, or WebP image of your signature from your device.
Auto-compress to 20KB — The tool finds the best JPEG quality that keeps your file under 20KB, scaling down dimensions if needed.
Download and upload to portal — Preview the result, verify the file size, and download the compressed signature for your exam form.

Why Use This Tool

Almost every Indian government exam portal requires a separate signature upload under 20KB in JPEG format. SSC, UPSC, IBPS, Railway RRB, NTA, and state PSCs all enforce this limit. A photo of your signature taken with a phone camera is usually 1–5MB — over 50 times the allowed size.

This tool handles the compression automatically. It uses a binary search algorithm to find the highest JPEG quality that keeps your signature under 20KB. Since signatures are high-contrast line drawings on white backgrounds, they compress extremely well — your compressed signature will look identical to the original at the sizes portals display them.

Everything runs in your browser. Your signature image never leaves your device — no server uploads, no accounts, no watermarks. Upload, compress, download, and paste into your exam form.

Frequently Asked Questions

Indian exam portals like SSC, UPSC, IBPS, and Railway RRB enforce a 20KB limit on signature uploads to keep application processing fast across millions of candidates. The signature is typically displayed at a small size on admit cards and answer sheets, so a compact file is sufficient. Most portals specify JPEG format with dimensions around 140×60 pixels.

Most Indian government exam portals require signatures in JPEG format, under 20KB, with a white background. Typical dimension requirements range from 140×60 to 200×90 pixels. Sign on white paper with a black or dark blue pen, photograph it clearly, and use this tool to compress it to the required size.

Yes — signatures are simple line drawings with high contrast, which compress very efficiently in JPEG. This tool uses binary search to find the highest quality that fits under 20KB, so your signature stays sharp and legible. At typical portal display sizes, the compressed version looks identical to the original.

The tool detects this and tells you immediately — no unnecessary recompression. You can download the original file directly, avoiding any quality loss from double-compressing an image that already meets the requirement.

SSC (CGL, CHSL, MTS), UPSC (CSE, CDS, NDA), IBPS (PO, Clerk, SO), Railway RRB (NTPC, Group D, ALP), NTA (NEET, JEE), and most state PSC portals require signature images between 10KB and 20KB. Some also require the candidate's photo under 50KB — use our Resize Image to 50KB tool for that.