Compress Image to 100 KB

Compress an image to 100 KB without uploading it.

or drop an image anywhere on this page

JPEG, PNG or WebP · up to 50 MB

Files never leave your device
Free, no sign-up
No watermark

How to use this tool

Choose a JPEG, PNG or WebP file, or drag it onto the drop area.
Check the target size (currently 100 KB). It is editable, so change the number or the KB/MB unit if your limit differs.
Press the button. The tool lowers the quality first, then reduces the dimensions step by step if the file is still too large.
Compare the preview and the measured output size with the original, and read any notes or warnings.
Download the new file. If it missed the target, adjust the target slightly or crop the original, and try again.

What to know before you compress Image to 100 KB

A limit of 100 KB shows up often on application forms, government portals, content management systems and email signature tools. It is large enough for a sharp, readable photograph at typical screen sizes, but small enough to load fast on slow connections. The easiest way to meet the limit is to start with the original image rather than an already compressed copy, because repeated compression degrades quality faster than a single careful pass. If your file is a PNG screenshot or scan, the tool may reduce its dimensions rather than quality, so consider JPEG output. Remember that no tool can promise a perfect result for every file, and a portal that measures in decimal kilobytes might need a few KB of margin.

A 100 KB budget is a practical balance for web pages, email signatures and many upload forms, and photographs usually remain sharp at moderate dimensions. The size you enter is a goal, not a promise: the result depends on the original image, its dimensions, its complexity, its format and your browser's encoder, and the tool reports the real size instead of assuming it.

Recommended settings and supported formats

Keep the target at 100 KB or edit it. JPEG output is the best for photos, and WebP can be smaller if both your browser and the destination support it. Leave a small buffer, around 5 to 10 KB, if the form states a hard limit.

Accepted input: JPEG, PNG and WebP (WebP depends on your browser). HEIC and AVIF are not supported. PNG is lossless, so it can only get smaller with fewer pixels unless you choose JPEG or WebP output.

Practical uses

Forms and portals that impose a 100 KB upload limit
Website images that should load quickly on mobile
Email signatures and newsletters with light graphics

Tips for a smaller file

Start from the original, not a previously compressed copy.
Leave a small buffer under hard limits.
Use JPEG output for photographs and screenshots with gradients.
Crop unneeded areas before compressing.

Frequently asked questions

How do I compress an image to under 100 KB?

Select your file, keep the target at 100 KB and compress. The tool shows the original and output sizes so you can check the result before downloading.

Which formats are supported?

JPEG, PNG and WebP. HEIC and AVIF are not supported, and WebP depends on your browser.

Is 100 KB enough for a good-looking photo?

For screen viewing, usually yes. Large prints or heavy zoom will reveal the compression.

Does my image leave my device?

No. Everything happens in your browser and nothing is uploaded.

Related image size tools

Privacy

Your image is processed entirely in your browser using your own device. It is not uploaded to Paul Digital or any other server, and nothing is stored once you close the page.