Perfect for signatures
Scan or photograph your signature on white paper, crop it, and compress. Signatures compress very well because they are mostly white space.
Compress image to 20 KB
Compress an image to 20 KB.
Signatures and small ID photos on application forms often have to be under 20 KB. Add the image, set the pixel size if the form gives one, and download a file that fits.
How it works
- Add your photo or scan
- Check the limit is set to 20 KB
- Download the image, guaranteed under the limit
Upload neededNone
WatermarkNever
PriceFree
Advertisement
AdSense or sponsor banner placeholder
Exact size compressor
Drop images here
Drag and drop images
JPG, PNG or WebP. Add several at once, or paste with Ctrl+V.
Your images
Compressed images appear here, each guaranteed under your limit.
Advertisement
Responsive display ad placeholder
Exact pixel sizes
Forms often say something like '140 × 60 pixels, 10–20 KB'. Enter both the pixels and a 10 KB minimum and the tool meets every rule.
Sharp text
We reduce size before reducing quality where possible, so signatures stay crisp instead of blocky.
Questions
How do I make a signature under 20 KB?
Sign on plain white paper, take a well-lit photo, crop tightly around the signature, then compress it here with the limit set to 20 KB. Add exact pixel dimensions if the form specifies them.
Why does a form say my image is too large when it looks small?
Upload forms check the file size in kilobytes, not how big the picture looks. A phone photo is usually 2–5 MB (2,000–5,000 KB), so it has to be compressed and often resized to fit limits like 50 KB.
Will it ever go over my limit?
No. Some websites count 1 KB as 1,000 bytes and others as 1,024 bytes, so we use the stricter reading. A file that says 'under 50 KB' here passes either way.
What if the form also has a minimum size?
Enter it in the Minimum size box. If an image comes out too small, the tool raises the quality or the pixel size until it is between your minimum and maximum.
The form asks for exact pixel dimensions. Can I set those?
Yes. Enter the width and height (for example 200 × 230) and the image is cropped from the centre to that exact size before compressing.
Are my files uploaded anywhere?
No. Everything happens inside your browser on your own device. Your files are never sent to a server, which is faster and keeps private photos and documents private.
Is it free?
Yes. There is no sign-up, no watermark and no daily limit.