Compress Image to 100 KB

What 100 KB buys you

A 100 KB JPG is a comfortable size for most on-screen uses. Photos typically come out somewhere around 1500–2500 pixels wide at a good quality, depending on how much detail they contain: a portrait against a plain wall needs far fewer bytes than a leafy landscape. That’s sharp enough for a profile picture, a blog post or a product photo viewed on a phone.

If the original is already a JPG under 100 KB, it’s returned as it is, with no needless re-compression. Anything bigger is fitted under the limit, landing close to 100 KB so you keep as much detail as possible.

Scanned documents under 100 KB

Portals often ask for certificates, mark sheets, bills or ID cards as images under 100 KB. Text stays readable if you help the compressor a little:

• Scan or photograph the page flat, in good light, so the paper looks white and evenly lit.
• Crop away the desk or scanner bed around the page with Crop Image.
• For a multi-page document, upload each page as its own image if the form allows, rather than squeezing several into one.
• Zoom in on the result before uploading: if small print has become hard to read, try cropping more tightly so the text takes up more of the image.

Profile pictures and email

Many websites and community forums limit avatars and profile photos to around 100 KB, and email newsletter designers often aim to keep each image under that size so messages load quickly. For avatars, crop to a square first (the 1:1 ratio does it in a click), then compress. For newsletters, resize images to the width of your email layout, commonly 600 pixels or twice that for sharp phone screens, before compressing to 100 KB or less.

Different limit? Try the 200 KB or 50 KB pages, or type any size into the custom target tool.

Private by default

Documents and personal photos are processed by your own browser, never uploaded to a server, so nobody else ever holds a copy. Hidden location and device information is dropped from the compressed file as a bonus.

When 100 KB isn’t enough

Very detailed photos, like crowds, foliage or textured fabric, sometimes need to drop below 1500 pixels wide to fit. That’s fine for screens but not for print. If the image will be printed or zoomed into, ask whether a larger file is allowed, or use a format with better compression where the destination supports it.