Compress image to 20KB
Some forms accept signature scans only up to 20KB. Pick the image, keep the 20KB target, and press Compress image to get a small JPG that is checked before you download it.
Drop an image here
or
JPG, JPEG, PNG, WEBP, GIF, BMP, AVIF, HEIC, HEIF
Up to 50 MB on a computer and 30 MB on a phone, because your device does the work. You can also paste a file.
Stays on your device
Your file is never uploaded
20 KB target
Type any size you need
JPG out
Checked under the target
How it works
- Pick the signature scan, simple document or icon. The image is read on your device.
- This 20kb image compressor starts the target at 20KB. Type a different size if your form asks for another limit.
- The tool lowers JPEG quality first, down to 60, and keeps the highest quality that fits.
- If the file is still too big at quality 60, the picture is made smaller in pixels and the search runs again.
- The result is checked to be under the target and shown in a preview. Then download the JPG.
Facts
- Target size
- 20KB by default. You can type another size
- Typical use
- Signatures on online application forms, simple scans and small icons
- Output format
- JPG
- Method
- Quality is lowered first, down to 60. Then the picture shrinks in pixels
- Transparency
- A see-through signature on a PNG gets a white background
- Where it runs
- In your browser, on your device. Nothing is uploaded
- Max file size
- 50 MB on a computer, 30 MB on a phone
- Browsers
- Chrome and Edge 69 or later, Firefox 105 or later, Safari 16.4 or later
Questions
How do I compress an image to 20KB?
Pick the image and keep the 20KB target. Press Compress image. The tool lowers the JPEG quality until the file fits, then checks the size before you download it.
How do I make a signature image 20KB for a form?
Scan or photograph the signature on white paper, then pick the file here. The output is a JPG with a white background, which suits most signature boxes.
Will a photo look clear at 20KB?
Not at full size. At 20KB a photo has to be small in pixels, so this size suits signatures, simple scans and icons better than detailed photos.
Are my files uploaded when I compress to 20KB?
No. The compression runs in your browser, so the image is not sent to a server. It only leaves your device when you upload the finished file yourself.