Runs entirely in your browser — your image is never uploaded to any server.
Ten kilobytes is the tightest limit online forms set — usually for a scanned signature or thumb impression, or a very small photo. A picture that small has to be small in pixels as well as compressed, so the tool reduces the width and height too whenever quality alone cannot get it under 10KB.
Tip: Crop tightly around the signature or face before compressing, and use a scan or photo on plain white paper: a clean white background compresses far better than a grey, shadowed one.
How to compress an image to 10KB
- Select the photo or image you want to make smaller — JPG, PNG, WebP or a screenshot.
- Check the target size is 10KB, or change it if your form asks for a different limit.
- Press Compress to 10KB. The tool finds the best quality that fits, and reduces the width and height only if it has to.
- Check the new size and the preview, then download the JPG.
Frequently Asked Questions
How do I compress an image to 10KB?
Select your image, make sure the target is 10KB and press Compress to 10KB. The tool tries the highest quality that fits; if even a low quality is still too big, it reduces the width and height step by step until the file is under 10KB. Then download the JPG.
Will my photo still look good at 10KB?
A signature stays perfectly readable at 10KB. A photo will be small — roughly passport-photo size on screen — but a face remains clear.
Will the file be exactly 10KB?
It will be at or just under 10KB — as close to the limit as possible without going over, because that keeps the most quality. Sizes are counted in thousands of bytes, so the file also passes forms that count 1KB as 1,024 bytes.
Can I compress a PNG or a screenshot to 10KB?
Yes. JPG, PNG and WebP images all work, including screenshots. The result is saved as a JPG, which is far smaller for photos; any transparent areas become white.
Is my photo uploaded anywhere?
No. The image is compressed inside your browser on your own phone or computer, and never sent to a server.