Compress image to 100 KB

1. 1Choose one or more images, such as a photo of a certificate.
2. 2Each one is compressed to under 100 KB without any extra taps.
3. 3Save the result with Download, or attach it somewhere else with Share.

When to compress an image to 100 KB

When you compress an image to 100 KB, it gets about twice the room of a 50 KB file. That extra space makes a real difference for pictures with small details, like the text on a certificate, a mark sheet or an ID card. Some forms use a limit like this for document uploads.

If a form gives you a limit of 100 KB, use that size and not a smaller one. A file close to the limit keeps more detail.

Taking a document photo that stays readable

Text needs sharp edges between dark letters and light paper. A clean, bright photo keeps those edges at 100 KB. A dark or tilted photo wastes bytes on noise and shadows.

• Lay the paper flat on a dark table, so the edges are easy to see.
• Use daylight from a window. The flash can leave a bright spot that hides words.
• Hold the phone straight above the page.
• Crop to the page edges in your gallery app before you start.

When the width and height get smaller

A full phone photo is usually several megabytes. To reach 100 KB, the tool first lowers the JPG quality. If the letters would start to look blotchy, it reduces the width and height instead, and the result shows the new size in pixels. A smaller page with clean letters is easier to read than a large page with blurred ones.

If you must keep the original dimensions, set Pixel size to Keep exact under the drop area. Only the quality is lowered then, which can make small text look rough.

Tips

• For a document with several pages, take one photo per page and pick them all at once. Each page becomes its own file under 100 KB.
• If the result looks soft, check whether the form allows 200 KB.

Frequently asked questions