About the Image Compressor

Large photos slow down websites, fill up storage and are rejected by upload forms with size limits. The Image Compressor shrinks them by re-encoding at the quality you choose, so you can often cut the file size by more than half with little visible difference.

You can compress several images at once, set a maximum width to reduce pixel dimensions as well, and see the before and after size of every file before you download it.

How to use the Image Compressor

Choose your images or drag them onto the box.
Set the quality. Values between 65 and 80 usually give a good balance.
Optionally set a maximum width and pick JPG or WebP as the output.
Press Compress again after changing settings, then download each result or all of them as a ZIP file.

How it works

The tool draws your image onto a canvas in your browser and saves it again as a JPG or WebP file using lossy compression. Lower quality removes more detail and gives a smaller file. Reducing the width cuts the number of pixels, which shrinks the file even more. Saving through a canvas also removes hidden metadata such as camera details and location.

Transparent areas in PNG images become white when saved as JPG. Choose WebP to keep transparency.

Your files stay private

This tool works entirely inside your browser. The files you choose are read and processed on your own device and are never uploaded to our servers, so your documents and pictures remain private.

Frequently asked questions

Why is my compressed image bigger than the original?

This can happen when the original was already well optimised. Try a lower quality or a smaller maximum width.

Which format is smaller, JPG or WebP?

WebP is usually 20 to 30 percent smaller than JPG at similar quality and is supported by all modern browsers.

Will compressing reduce the print quality?

Lossy compression removes detail permanently. Keep the original for printing and use the compressed version for the web and email.