Make a photo, signature or scan fit a 10 KB upload limit. A 10 KB file is tiny, so the picture is made small as well as compressed; the tool finds the largest size that still fits.
Your images never leave your device. No sign-up, no watermark.
What fits in 10 KB
We ran this exact compressor on four test images with the target set to 10 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 | 469 × 312 | 634 × 422 | small, fine for a form photo or thumbnail |
| Portrait, 1920 × 1350 | 361 × 254 | 395 × 278 | small, fine for a form photo or thumbnail |
| Group of four, 1920 × 1537 | 308 × 247 | 322 × 257 | small, fine for a form photo or thumbnail |
| A4 text page, 1654 × 2339 | 279 × 394 | 300 × 423 | too small for text: pick a bigger size |
When you need an image under 10 KB
- Signature uploads on application forms, which are often limited to 10 or 20 KB.
- Very small thumbnails and avatars for old systems with strict limits.
- Attaching a photo where every kilobyte counts, such as some SMS and offline forms.
Tips for a sharp 10 KB image
Crop away everything except the face or the signature before you compress. At 10 KB every pixel of empty background takes space from the part that matters.
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
Can a colour photo really be 10 KB?
Yes, but only at a small size, roughly 300 to 470 pixels wide in our tests. That is enough for a passport-size photo or a signature box on a form, not for printing.
Will the file be exactly 10 KB?
It will be just under 10 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.