Browser-only image tool
Resize Signature to 20 KB
Compress your scanned or photographed signature to exactly 20 KB in your browser. No upload, no account needed. Built for IBPS, SSC, UPSC, and bank KYC portals that enforce a 20 KB signature limit.
Ready to resize your signature to 20 KB?
Open the tool → pick your signature image and set the target to 20 KB
How it works (3 steps)
- Photograph or scan your signature. Use white paper and a dark pen. Crop tightly so only the signature is visible — no unnecessary white space.
- Set the target to 20 KB. Upload to UploadReady, set the target, choose JPG output. Adjust quality slider if needed. Signatures compress efficiently to 20 KB.
- Download and submit. Save the 20 KB signature file and upload it to the exam or bank portal.
Why 20 KB is the strictest signature limit
20 KB is used by government exam portals such as IBPS, SSC, and RRB, as well as national ID systems, because they process tens of millions of applications. At 20 KB, a 300×80 px JPG signature is readable, storable at scale, and transmissible on low-bandwidth connections common in rural areas. Unlike ID photos which require visible facial detail, signatures are simple two-tone images where 20 KB is sufficient to preserve all the identifying strokes without any meaningful loss of legibility for verification purposes.
Perfect for...
- IBPS bank exam registrations (PO, Clerk, SO) with 20 KB signature limits
- SSC CGL, CHSL, and other competitive exam portals
- University and college admission portals requiring a separate signature file
- Government job applications and state public service commission portals
Tips for 20 KB signature resizing
- Crop as tightly as possible. The more blank white space you remove before uploading, the easier it is to hit 20 KB with a clear result. Most portals only need the signature, not surrounding whitespace.
- Use JPG output for signatures. Even though signatures look like they should be PNG (sharp lines), JPG at moderate quality (55–65) produces a smaller file and is accepted by most portals.
- Target dimensions: 400x150 px or smaller. At this pixel size and JPG quality 60, a signature easily lands at 10–20 KB while remaining legible. Check your portal's minimum dimensions before going smaller.
- Avoid colored backgrounds. If your signature was photographed on a yellowish or off-white surface, the colored background increases file size. Adjust brightness to make it whiter before uploading.
FAQ
How do I resize my signature to exactly 20 KB?
Scan or photograph your signature on white paper. Upload to UploadReady, set target to 20 KB, choose JPG output. Signatures are simple high-contrast images that compress efficiently. Download instantly — file never leaves your device.
Which exam portals require signatures under 20 KB?
IBPS bank exams, SSC CGL and CHSL, RRB recruitment, UPSC preliminary applications, and many state public service commission portals commonly require 10–20 KB signature images. Always check the specific portal's requirements.
Will my signature still be readable at 20 KB?
Yes. Signatures are simple black-on-white images that compress very efficiently. A well-cropped signature at 400x200 px can be compressed to 20 KB at JPG quality 55–65 while remaining clearly legible for verification purposes.
What are the recommended pixel dimensions for a 20 KB signature?
Most portals specify 140x60 px (IBPS) or 150x60 px. If unspecified, crop to 400x200 px or smaller. Always check your portal's dimension requirements alongside the KB limit.
My phone photo is 3 MB. Can I compress it to 20 KB?
Yes. Reduce dimensions to 300x150 px and apply JPG compression. Signatures are high-contrast simple images — they compress from 3 MB to 20 KB cleanly. Crop tightly to the signature before uploading for best results.