How to compress an image to 20KB
- Choose the photo, signature or scan you need to upload.
- The target is already set to 20 KB. Change it if your form asks for a different limit.
- Click Compress to 20KB and download an image that's under the limit.
About the Compress Image to 20KB tool
Government portals, exam registrations and job applications often accept only tiny files — 20 KB is a common limit for signatures and thumb impressions, and sometimes for photos too. This tool automatically finds the best quality that fits under your limit. If the image is very large, it's also scaled down a little, because a slightly smaller picture looks much sharper than a heavily compressed big one.
100% free
No limits, no watermarks and no sign-up.
Private
Your images are processed on your device and never uploaded.
Fast
No uploading or waiting in a queue. Results in seconds.
Works everywhere
Windows, Mac, iPhone, Android and Chromebook.
Frequently asked questions
Will my image definitely be under 20 KB?
Yes. The tool keeps adjusting the quality and, if needed, the size of the picture until the file is 20 KB or smaller. The final size is shown before you download.
Why is my image smaller after compressing?
To fit a large photo into 20 KB with acceptable quality, its width and height are reduced too. For signatures and ID photos this is normal and usually expected by the form.
Can I compress a signature to 20 KB?
Yes. Photograph or scan your signature on white paper, cut it out with Crop Image, then compress it here.
Are my documents uploaded?
No. Everything happens in your browser, so your photo, signature or ID scan never leaves your device.