Compress JPEG to 10 KB
10 KB is the tightest limit you're likely to meet — mostly for signatures and thumbnail photos. This page saves JPEG and shrinks the image until it fits. Everything runs in your browser — nothing is uploaded. Need different dimensions instead? Resize or convert.
Why compress to 10 KB?
A 10 KB target is usually set for signatures, thumbnails and the small photo fields on online application forms. A JPG photo of around 240×180 pixels fits, with basic quality.
About 240×180 px fits
At medium quality a detailed JPG photo of roughly 240×180 pixels lands under 10 KB; at high quality about 170×130.
Typical use
10 KB limits are common for signatures, thumbnails and the small photo fields on online application forms.
358× smaller than a phone photo
A 12 MP phone photo is around 3–4 MB, so it must shrink about 358×. The tool lowers quality first and resizes only if needed.
Quality to expect
At 10 KB, quality is basic. Best for small ID photos and signatures.
Scans and documents
A scanned A4 page of about 300×420 pixels usually fits, because text pages compress far better than photos.
Exact limit, checked
10 KB is measured as 10,240 bytes (1 KB = 1,024 bytes), the way most upload forms count it, so the file is never just over.
10 KB at a glance
| Limit in bytes | 10,240 bytes |
|---|---|
| Photo at high quality | about 170×130 px |
| Photo at medium quality | about 240×180 px |
| Photo at low quality | about 330×250 px |
| Scanned A4 document | about 300×420 px |
| Reduction from a 12 MP phone photo | about 358× |
| Output format | JPG |
| Typical use | Signatures, thumbnails and the small photo fields on online application forms |
Compress an image to 10 KB in 3 steps
- Add your image — JPG, PNG, WebP or a phone photo.
- The target is already set to 10 KB. Leave “Remove EXIF metadata” ticked to save extra bytes.
- Click Compress and download a JPG under 10 KB.
New to image compression? Read the full compression guide.
What fits in 10 KB
10 KB is about 10,000 bytes — room for a signature, or a photo roughly 230 pixels wide. A full phone photo can't fit without being made much smaller, so the tool reduces the dimensions automatically when quality alone isn't enough.
Signatures compress best. Crop away all the white paper first with the cropper; a tight signature at about 140×60 pixels is often 3–6 KB.
Check both limits. Some forms say "10–20 KB": the file must be at least 10 KB too. Use 15 KB as a target in that case.
See also: resize signature.
Other file-size targets
Nearby limits — each one opens the compressor already set to it:
Compress by format
Guides and presets for each format:
Compress under a file size
Keeps your image’s format — pick the limit you need:
JPEG under a file size
Frequently asked questions
Can a photo really be 10 KB?
Yes, at a small size — about 200–250 pixels wide. The tool reduces the dimensions automatically so the JPEG fits.
How many pixels fit in 10 KB?
For a detailed JPG photo, about 240×180 at medium quality or 330×250 at low quality. Simple graphics and scans can be much larger.
What quality will a 10 KB photo have?
Basic. Best for small ID photos and signatures. The tool keeps the dimensions where it can and lowers compression quality first, so faces and text stay readable.
Is 10 KB the same as 10,000 bytes?
Not quite. Most forms count 1 KB as 1,024 bytes, so 10 KB is 10,240 bytes. The tool uses the same count, so a file it marks as under 10 KB is accepted.
Should I use JPG or WebP for 10 KB?
JPG is accepted everywhere and is the safe choice for forms. WebP holds about 30% more detail at the same size, ideal for websites that support it.
Why is my file still over 10 KB?
Very large or detailed images may not reach 10 KB by quality alone. Resize it first (for example to 240 pixels wide) with the resizer, then compress again.
Are my images uploaded anywhere?
No. They are read and compressed by your own browser and never leave your device. You can disconnect from the internet once the page has loaded and it will still work.