Are my images uploaded?

No. Everything runs in your browser on this device; the files never reach a server.

Will I see a difference in quality?

At quality 75 most photos look the same while getting much smaller. Raise the slider for print, lower it for the web.

What happens if an image can’t get smaller?

The original is kept and marked “Already optimised”, so you never download a bigger file.

Compress images online, without uploading them

Smaller images load faster and fit email and upload limits. This compressor re-encodes each image with modern encoders, removes hidden metadata such as GPS location, and keeps the original whenever it is already as small as it can be.

JPG, PNG, WebP, AVIF, GIF or HEIC · up to 50 files · 50 MP each

Quality: 75Output format

Processed on this device. Your images are never uploaded, and location and other metadata are removed.

How to use it

1Drop your images or tap to choose them (up to 50).
2Keep the quality at 75, or pick “Smallest file” for WebP.
3Press “Process images” and download each file, or all of them as a ZIP.

Questions, answered

Are my images uploaded?: No. Everything runs in your browser on this device; the files never reach a server.
Will I see a difference in quality?: At quality 75 most photos look the same while getting much smaller. Raise the slider for print, lower it for the web.
What happens if an image can’t get smaller?: The original is kept and marked “Already optimised”, so you never download a bigger file.

More free tools

Need a website that loads this fast?

Open-source libraries

jSquash (MozJPEG, OxiPNG, libwebp, libavif, resize) · Apache-2.0
libheif-js · LGPL-3.0
fflate · MIT