Compress Image to 100 KB
Bring any photo under 100 KB, at the best quality that fits.
Drop an image here
Or choose a file, or paste a screenshot. It is measured and re-encoded on your device and never uploaded.
Fitting on your device…
That didn't work.
Your image is opened, measured and re-encoded in this browser. It is never uploaded, and nothing about it is stored.
Keyboard shortcuts
- / or ⌘K
- Search every tool
- ⌘↵
- Run this tool, from anywhere on the page
- ⌘S
- Download the result
- ?
- Open and close this list
About the Pathine Compress Image to 100 KB
A hundred kilobytes is a small budget for a photograph — a phone picture is typically thirty to fifty times that — and it is the limit an awful lot of government forms, older job portals and school systems still enforce. Getting under it by hand means guessing at a quality slider and re-checking the file size, several times.
This does the guessing. It encodes at the best quality that lands under 100 KB, and if quality alone is not enough it reduces the pixel dimensions rather than turning your photo into a smear. The report tells you what it ended up at.
When you'd reach for it
A form that will not accept anything larger
Public-sector upload forms are often built to a limit set years ago and never raised. 100 KB is one of the common ones.
A profile picture with a strict cap
Older forums, intranets and membership systems frequently cap avatars around this size.
Attaching several photos to one message
When the limit is on the total rather than each file, getting each one small is the only way to fit them all in.
How to use it
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Drop the image in
Drag a file onto the page, choose one, or paste a screenshot. Nothing is uploaded — the work happens on your device.
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Read the report
Every requirement is listed with a tick or a cross against what your file actually is. Anything the rule asks for that software cannot check is listed too, unticked.
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Download it
The file you get is the one that passed. If nothing could pass, you are told the closest achievable size instead of being handed something that will be rejected.
Common questions
Will my photo still look acceptable at 100 KB?
For a normal photograph at web dimensions, usually yes. What costs bytes is fine detail — foliage, textured fabric, noise from a dim room. A portrait against a plain wall gets under 100 KB easily; a landscape full of leaves is the hard case.
Why did the dimensions change?
Because quality alone could not get there. Rather than encoding at a quality that visibly breaks the image, the tool reduces the pixel size — fewer, better pixels beats more, ruined ones. The report says when this happened.
Why is the result a JPEG?
Because PNG cannot reliably hit a byte target. It is lossless, so its size is decided by the image content rather than by any setting. If you need PNG specifically, use Make Image Fit and set the dimensions instead.
Is 100 KB 100,000 bytes or 102,400?
This page treats it as 102,400 — 100 × 1024 — which is what your operating system means when it shows "100 KB". If a form is strict about the decimal reading, set 97 KB in Make Image Fit to be safely under both.