Resize Image to 100 KB
100 KB is one of the most common upload limits on the web. This page opens the compressor with a 100 KB target so your photo lands just under it at the best possible quality. Everything runs in your browser — nothing is uploaded. Need different dimensions instead? Resize or convert.
Why compress to 100 KB?
A 100 KB target is usually set for profile photos and document uploads with a strict limit. A JPG photo of around 780×590 pixels fits, with fine for small display quality.
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 (best for photos), WebP or PNG |
| 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 photo under 100 KB
A typical phone photo is 2–5 MB — twenty to fifty times over. Two steps get it under 100 KB with good quality:
- Reduce the dimensions on the Resize tab. 800–1000 pixels wide is plenty for most forms and screens.
- Compress to the target. The tool searches for the highest quality that still fits.
Screenshots saved as PNG can be surprisingly large. Converting to JPG with PNG to JPG often halves them before any compression.
Strict counting? If a form still rejects a 99 KB file, use the 90 KB target for a safety margin.
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 reduce a 3 MB photo to 100 KB?
Set the width to about 1000 pixels on the Resize tab, then compress to 100 KB. Reducing dimensions does most of the work, so the quality stays high.
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.