Compress JPEG to 100 KB
100 KB with JPG only is the classic upload rule. This page converts anything to JPEG and compresses it to the best quality under 100 KB. Everything runs in your browser — nothing is uploaded. Need different dimensions instead? Resize or convert.
Why compress to 100 KB?
Many sites cap images at 100 KB — typically for profile photos and document uploads with a strict limit. That leaves room for roughly a 780×590 JPG photo.
About 780×590 px fits
At medium quality a detailed JPG photo of roughly 780×590 pixels lands under 100 KB; at high quality about 550×410.
Typical use
100 KB limits are common for profile photos and document uploads with a strict limit.
36× smaller than a phone photo
A 12 MP phone photo is around 3–4 MB, so it must shrink about 36×. The tool lowers quality first and resizes only if needed.
Quality to expect
At 100 KB, quality is fine for small display. Good for thumbnails, profile photos and forms.
Scans and documents
A scanned A4 page of about 950×1340 pixels usually fits, because text pages compress far better than photos.
Exact limit, checked
100 KB is measured as 102,400 bytes (1 KB = 1,024 bytes), the way most upload forms count it, so the file is never just over.
100 KB at a glance
| Limit in bytes | 102,400 bytes |
|---|---|
| Photo at high quality | about 550×410 px |
| Photo at medium quality | about 780×590 px |
| Photo at low quality | about 1060×800 px |
| Scanned A4 document | about 950×1340 px |
| Reduction from a 12 MP phone photo | about 36× |
| Output format | JPG |
| Typical use | Profile photos and document uploads with a strict limit |
Compress an image to 100 KB in 3 steps
- Add your image — JPG, PNG, WebP or a phone photo.
- The target is already set to 100 KB. Leave “Remove EXIF metadata” ticked to save extra bytes.
- Click Compress and download a JPG under 100 KB.
New to image compression? Read the full compression guide.
Getting a JPG under 100 KB
A phone photo (2–5 MB) needs about a 95% reduction. The tool first tries quality alone; if that would look poor, it reduces the width — usually to around 740 pixels — and keeps the quality high.
Is it really JPG? Files straight from some phones are HEIC or WebP even when named .jpg. This page re-encodes as true JPEG, so format checks pass.
Keep a copy of the original — compressed JPEGs can't be restored.
Margin under 100: 90 KB, 85 KB. Keep original format: resize image to 100 KB.
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
How do I compress a JPEG to 100 KB without losing much quality?
Let the tool reduce the dimensions as well as the quality. A 740-pixel-wide photo at good quality looks far better than a full-size one crushed to 100 KB.
How many pixels fit in 100 KB?
For a detailed JPG photo, about 780×590 at medium quality or 1060×800 at low quality. Simple graphics and scans can be much larger.
What quality will a 100 KB photo have?
Fine for small display. Good for thumbnails, profile photos and forms. The tool keeps the dimensions where it can and lowers compression quality first, so faces and text stay readable.
Is 100 KB the same as 100,000 bytes?
Not quite. Most forms count 1 KB as 1,024 bytes, so 100 KB is 102,400 bytes. The tool uses the same count, so a file it marks as under 100 KB is accepted.
Should I use JPG or WebP for 100 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 100 KB?
Very large or detailed images may not reach 100 KB by quality alone. Resize it first (for example to 780 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.