Compress Image to 20 KB
Get your photo under 20 KB in seconds, with the best possible quality. Perfect for signatures, thumbnails and small ID photos on government, exam and job application forms.
We search for the highest quality that fits under your limit and only reduce the dimensions when quality alone is not enough. 1 KB = 1,000 bytes, so the result also fits limits that use 1,024.
Auto saves JPG (accepted by every form and website), or WEBP when you upload WEBP.
How to use Compress Image to 20 KB
- 1
Upload your photo
Drop a JPG, PNG or WEBP image, or several at once. Nothing is uploaded to a server.
- 2
Keep the 20 KB target
The target is already set to 20 KB. You can change it any time or add maximum pixel dimensions.
- 3
Download
Compare before and after, then download the image or all images as a ZIP.
Reduce image size to 20 KB
Signature images and small passport photos are often limited to 10–20 KB on exam, visa and job portals. This tool compresses your image to 20 KB or less while keeping it as sharp as possible. It finds the highest JPEG quality that fits and only reduces the pixel dimensions when needed.
Why your image is rejected
Phone cameras save photos of 2–10 MB, far more than most forms allow. Uploading a file that is even 1 KB over the limit is rejected, so the result is always kept safely under 20 KB, counting 1 KB as 1,000 bytes so it also passes limits that use 1,024 bytes.
Tips for 20 KB images
- Crop away empty space first with the Crop tool, so more of the file size goes to the important part.
- If the form requires exact pixel dimensions, enter them as the maximum width and height.
- Need print sizes in cm or inches? Use Resize Image in cm.
- Need a different limit? The main Compress Image to Size tool accepts any value in KB or MB.