Resize Image to 100KB
Resize photos and scanned documents to 100 KB or less with sharp results. Free online image resizer in KB that runs entirely in your browser — no uploads.
- No upload — 100% private
- Instant, on your device
- Free, no sign-up
- Works offline once loaded
How it works
How to use Resize Image to 100KB
Drop your images — 100 KB is preset.
The tool lowers the resolution step by step until each file fits.
Check the result size and pixel dimensions.
Download individually or as a zip.
Why use it
Why use our Resize Image to 100KB tool
Readable documents
At 100 KB, phone photos of certificates and ID cards stay legible because quality is kept high.
Sensible dimensions
Big phone photos are brought to a screen-friendly size instead of being over-compressed.
Exact results reported
Every file shows its final size, so you know it passes before you upload.
Offline capable
Works without sending anything over the network once the page is open.
FAQ
Frequently asked questions
Is 100 KB enough for a document photo?
Usually yes. Crop away the background around the document first so the text uses as many pixels as possible.
Can I set a minimum size too?
Yes. Fill in the optional minimum if your form says something like “between 50 KB and 100 KB”.
Will the aspect ratio change?
No. Width and height shrink together, so nothing gets stretched.
Does this work on iPhone?
Yes, in Safari or any browser. HEIC photos are read and saved as JPG.
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