Reduce a photo or signature to under 20 KB, the limit many online application and exam forms use. The tool picks the best quality and size that stay just under 20 KB, in your browser.
Your images never leave your device. No sign-up, no watermark.
What fits in 20 KB
We ran this exact compressor on four test images with the target set to 20 KB. This is the pixel size each one came out at, so you know what to expect before you start:
| Test image | As JPG | As WebP | Result |
|---|---|---|---|
| Group photo, 1920 × 1280 | 731 × 487 | 1024 × 683 | medium, fine for profiles and forms |
| Portrait, 1920 × 1350 | 564 × 397 | 730 × 514 | small, fine for a form photo or thumbnail |
| Group of four, 1920 × 1537 | 473 × 379 | 572 × 458 | small, fine for a form photo or thumbnail |
| A4 text page, 1654 × 2339 | 381 × 538 | 445 × 629 | too small for text: pick a bigger size |
When you need an image under 20 KB
- Passport-style photos on online application forms that ask for 20 KB or less.
- Signature uploads limited to 10 to 20 KB.
- Profile pictures on portals with a small upload limit.
Tips for a sharp 20 KB image
If the form also gives a pixel size, such as 200 × 230, resize to that size first with the Image Resizer and then compress. A small image reaches 20 KB at a much higher quality.
Check the form’s other rules too. If it asks for an exact pixel size, use the Image Resizer first; for a passport or visa photo, start with the Passport Photo Maker.
Questions
Will a 20 KB photo look blurry?
Not at the size forms show it. In our tests a portrait came out at about 560 × 400 pixels as JPG, which looks sharp in a form photo box. It would look soft if printed large.
Will the file be exactly 20 KB?
It will be just under 20 KB, never over, so upload forms accept it. The tool counts 1 KB as 1000 bytes, which also keeps it under the limit on forms that count 1 KB as 1024 bytes.
Is my image uploaded anywhere?
No. The compression runs in your own browser, so your photo never leaves your device. It works on phones and computers, with no sign-up and no watermark.
Which files can I use?
JPG, PNG, WebP and iPhone HEIC photos. PNG files are saved as JPG when you compress to a size, because PNG can’t be made small enough for most limits.