Compress Images Online Without the Upload

Large images cause small problems everywhere: they blow past email attachment limits, get rejected by upload forms, eat up phone storage, and slow down every website they're placed on. Compressing an image reduces its file size, usually with little or no visible loss of quality.

Downscale Image gives you three ways to compress a photo: a quality slider for quick, visual results, a file-size target in KB when a form has a strict limit, and resize/crop controls for full control over dimensions.

There's always a tradeoff between file size and quality — the more you compress, the smaller the file, but at some point detail starts to soften. The tool shows you a live before/after size readout as you adjust settings, so you can find the balance that works for your image.

All of this happens locally in your browser using your device's own processing power. Nothing is uploaded anywhere, which makes this a good option for photos you'd rather not send to an unknown server.

Compressing a photo takes just a few clicks and no software install. Here's the process:

1. Upload your image
   Drag and drop an image, or select one or more files from your phone or computer.

2. Adjust the settings
   Drag the quality slider for a quick result, or switch the compression control to File size if you need to hit an exact KB target.

3. Check the size readout
   Watch the live before/after file size as you adjust the compression slider, so you know exactly how much you're saving.

4. Download
   Save the compressed image, or the whole batch as a zip, directly to your device.

Working through a batch of photos? Select them all at once — Downscale Image compresses every image and lets you download the whole set as a single zip file.

Need to hit an exact size limit, like 100 KB or 200 KB for a form? Downscale Image's file-size target is built exactly for that.