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Compress an image to under 100 KB

Make a photo, scan or signature smaller than 100 KB without leaving this page.

Lossy compression discards detail. Keep your original and check the result is still clear before you submit it.

About the Compress Image to 100 KB tool

100 KB is a typical cap for photos on upload forms, forums and CMS media fields. It is roomy enough for a clear photo at moderate dimensions.

The tool finds the best quality that fits under 100 KB. If the picture is very large it will be scaled down a little, which usually looks identical on a screen.

Step by step

How to compress an image to under 100 KB

Add your picture

JPG, PNG and WEBP files are accepted. You can add several at once.

Check the target

The target is 100 KB. Change it in the settings if the form you are filling in asks for a different limit.

Compress

Quality is lowered just enough, and the picture is scaled down only if quality alone is not enough.

Download

A single picture downloads directly; several arrive together as a ZIP.

What it does well

Features

Aims for a size

It searches for the best quality that still fits under 100 KB.

Several pictures at once

Add up to 20 and download them together.

Transparent PNGs handled

Transparent areas become white, because JPG has no transparency.

Never uploaded

The picture is processed on your device and never leaves it.

Specification

Supported formats and limits

AcceptsJPG, PNG, WEBP
ProducesJPG or WEBP
File sizeLimited by your device's memory, not by a server. Around 100 MB works well on most computers.
Files per job1 to 20
Account requiredNo
WatermarkNone
Where it runsIn your browser. Files are never uploaded to a server.
Works onWindows, macOS, Linux, Android, iOS — any modern browser

Questions

Compress Image to 100 KB FAQ

Will a 100 KB picture look good?

At web sizes, yes. Pictures up to around 1,200 pixels across look fine at 100 KB; print-size images will not.

What if it cannot get under 100 KB?

Very large or very detailed pictures sometimes cannot reach a small target without becoming tiny. In that case you get the smallest usable result and a note; lowering the longest side in the settings usually fixes it.

Which format should I choose?

JPG is the safest choice and works everywhere. WEBP is smaller at the same quality, but some older forms and programs do not accept it.

Is my file uploaded?

No. The work happens in your browser, on your own device, so the file is never sent to a server. Close the tab and nothing is left behind.

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