Reduce any photo to under 20 KB in seconds. The size is already set: add your image and press Compress. A 20 KB limit is common for signatures and small ID photos on online application forms.
Compress to 20 KB →- Free
- No upload
- No sign-up
How to compress an image to 20 KB
Three steps, no account.
Add your image
Drop it in, click to choose, or paste with Ctrl+V.
Press Compress images
The target is already 20 KB. Change the number if your form asks for a different limit.
Download
The new file is under 20 KB. Its size and dimensions are shown before you download.
What a 20 KB image looks like
At 20 KB a photo has to be small: expect roughly 300 to 500 pixels on the longest side. That is normal for signature and thumbnail uploads.
Tip: crop the photo to the part you need before compressing. Fewer pixels to store means better quality at the same file size. If the form also asks for exact pixel dimensions, choose a width under Resize.
Other sizes
Need a different limit?
Frequently asked questions
How do I compress an image to 20 KB?
Add your image above and press Compress images. The size is already set to 20 KB. The tool lowers the quality, and reduces the dimensions only if needed, until the file is under 20 KB.
Will my photo still look good at 20 KB?
At 20 KB a photo has to be small: expect roughly 300 to 500 pixels on the longest side. That is normal for signature and thumbnail uploads. The exact size depends on how detailed your picture is; the result shows its width and height.
Is the result exactly 20 KB?
It is at or just under 20 KB, never over. Upload forms reject files above the limit, so the tool always stays below it.
Is my photo uploaded?
No. The image is compressed in your browser on your own device and is never sent to a server.
Can I compress a PNG or WebP to 20 KB?
Yes. Add a JPG, PNG, WebP, AVIF, GIF or BMP image. It is saved as a JPG (or WebP if you choose it) under 20 KB.
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