Compress Image to 20KB

Shrink signature scans and thumb impressions to the strict 10KB–20KB limit for competitive exam forms.

✔ Ultra-Low Byte Size Control · ✔ Zero Uploads · ✔ Free

Reaching the 20KB Image Limit

A 20KB maximum file cap is commonly enforced for signature photos, left thumb impressions, and small avatar photos on government portals (SSC, IBPS, NTA). Achieving a clean file under 20KB requires cropping away blank white borders and setting max image dimensions to 350px.

How to Compress an Image to 20KB

Open the 20KB Image Compressor Tool.
Upload your tightly cropped signature or thumb impression image.
Set max width to 350px and quality slider to 65%.
Download the optimized image when the readout shows 12KB–18KB.

Frequently Asked Questions

What if my image drops below 10KB?

If a portal requires 10KB to 20KB, increase the quality slider slightly to ~80% until the output size reads around 14KB.

Is my signature image private?

Yes. All image processing takes place exclusively inside your web browser without server storage.