ToolRun

Compress Image to 100KB

Reduce any photo to 100 KB or less while keeping the best possible quality. Runs in your browser.

Target size:

or drop it here, or paste with Ctrl+V

JPEG, PNG, WebP, and other formats your browser can open

Private by design: your files are processed on this device and never uploaded. Want proof? Once the page has loaded, turn off your Wi-Fi and the tool keeps working.

How to compress an image to 100KB

  1. Drop your photo into the box above, or click to choose it. 100 KB is already selected.
  2. The tool tries quality levels automatically and keeps the highest-quality JPEG that is 100 KB or smaller.
  3. Check the preview, then click Download.

If the image cannot reach 100 KB at full size, the tool also reduces its pixel dimensions step by step and tells you when it has done so. You can pick a different target, or type a custom size, at any time.

When you need an image under 100KB

A 100 KB limit is common for profile pictures, document scans on application forms, and email-friendly photos. At 100 KB, a typical phone photo can keep good detail at around 1000 to 1500 pixels wide.

How the size is measured

Websites disagree on whether a kilobyte is 1,000 or 1,024 bytes. To be safe, this tool treats 100 KB as 100,000 bytes, the stricter of the two, so the file passes upload checks that use either definition. The result is saved as JPEG because JPEG gives the smallest files for photos and is accepted almost everywhere.

All processing happens in your browser. Your photo is never uploaded, which matters for ID photos and signatures.

Frequently asked questions

Will my photo lose quality when compressed to 100KB?
Some, because reaching a smaller size means discarding detail. The tool keeps as much quality as possible by choosing the highest JPEG quality that still fits 100 KB, and only shrinks the dimensions if quality alone is not enough.
Why is the result a JPG even if I uploaded a PNG?
JPEG produces far smaller files than PNG for photos, and most upload forms with size limits accept JPEG. Transparent areas in a PNG are filled with white, because JPEG has no transparency.
Is my image uploaded anywhere?
No. The compression runs in your web browser using your device. The image never leaves your computer or phone.

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