Compress image to 30 KB.
Need a signature or photo under 30 KB for an exam or government form? Drop it in and we hit the target in one click, entirely in your browser, so your image never leaves your device. No watermark, no signup, no upload limits.
Exact
Auto-tunes to your target
Private
Never leaves your device
Nothing stored
No upload at all
How it works
- 01
Add your image
Drop in a JPG, PNG or WebP photo or signature, or click to browse. It stays on your device. Nothing is uploaded.
- 02
We hit 30 KB
Your browser re-encodes the image, automatically finding the quality (and, if needed, size) that lands at or under 30 KB.
- 03
Download it
Grab the 30 KB image instantly. No upload, no server, no signup.
How many pixels fit in 30 KB
30 KB is 30,720 bytes, 245,760 bits. Quality drops first; then the size steps to 85, 70, 55, 40, 25 percent.
| Picture | Full size | At 70 percent | At 40 percent |
|---|---|---|---|
| 600 x 600 ID photo | 0.68 | 1.39 | 4.27 |
| 1280 x 720 screenshot | 0.27 | 0.54 | 1.67 |
| 1920 x 1080 picture | 0.12 | 0.24 | 0.74 |
| 4032 x 3024 phone photo | 0.020 | 0.041 | 0.13 |
| Bits per pixel | Pixels | Square |
|---|---|---|
| 8 | 30,720 | 175 x 175 |
| 4 | 61,440 | 247 x 247 |
| 2 | 122,880 | 350 x 350 |
| 1 | 245,760 | 495 x 495 |
| 0.5 | 491,520 | 701 x 701 |
| 0.25 | 983,040 | 991 x 991 |
- Fewer bits per pixel, harder squeeze: a big phone photo shrinks before it reaches 30 KB.
Common questions
Why compress to 30 KB?+
A 30 KB cap is common on exam and government forms for photos and signatures: between the 20 KB and 50 KB limits you'll also see. This gets you under it in one click.
Will a photo still be usable at 30 KB?+
For passport-style photos and signatures, yes. They compress well. For a busy colour photo we also gently reduce the dimensions so it still fits while staying usable.
Is my image uploaded anywhere?+
No. This runs entirely in your browser using your device's own processor. Your image never leaves your computer or phone.
What if it can't reach 30 KB?+
For large or detailed images we reduce the dimensions too. If it still can't fit while staying usable, we give you the smallest version and tell you, never a broken file.
Which formats work?+
JPG, PNG and WebP. The result is a JPG (or WebP) since those compress to a precise size.
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