Compress Image to 20KB
Compress a JPG, PNG or WebP image below 20KB online for signatures, forms and very small upload limits.
Drop your image here or click to upload
Supports JPG, PNG, WebP — up to 20MB
When to use a 20KB image
Very small upload limits commonly used for signatures, thumbnails and lightweight form attachments.
How to reduce an image below 20KB
- Upload a JPG, PNG or WebP image up to 20MB.
- Leave 20 KB selected as the maximum target.
- Select Compress below 20 KB, preview the result and download the JPG.
20KB is an aggressive limit. Start with a tightly cropped source because detailed photographs may lose visible quality.
Maximum file size versus exact file size
This tool treats 20KB as a maximum. A file below the limit is normally accepted when a form says “maximum 20KB,” but some portals also specify a minimum KB, pixel dimensions, format or background.
Related image tools
For exact pixel dimensions and a KB range, use the image resizer. You can also use the 100KB image compressor, WhatsApp image compressor or an exam photo resizer.
Frequently asked questions
Does compression happen online?
Processing runs locally in your browser; the selected image is not uploaded to RapidTools.
Why is the result smaller than 20KB?
The target is a ceiling. Image detail, dimensions and source encoding determine the final size.
What format will I download?
Target-size mode exports JPG for efficient compression and broad portal compatibility.