Compress JPEG
Shrink JPEG photos with MozJPEG, right in your browser. Nothing is uploaded.
Drop JPG files here
Converted on your device. Files are never uploaded.
Up to 20 files at a time.
Phone cameras save large JPEGs that hit attachment limits and slow down web pages. FormatJet runs MozJPEG, a JPEG encoder built for small files, inside your browser to save each photo again at the level you choose. You see the new size of every file, and nothing leaves your device.
About the formats
JPGJPEG image
JPG (or JPEG) is the most widely supported photo format. Its lossy compression keeps files small, which suits photos but not sharp text or transparency.
Converted with jSquash, Image engine.
Questions
Which compression level should I choose?
Balanced, the default under Compression in Options, suits most photos. Light keeps the most detail, for prints and portfolios, and Strong makes the smallest files for email and web pages, where some loss of detail can show.
Can compressing make my JPEG bigger?
Never. If MozJPEG can’t beat the original’s size, you get the original back, with only its location data removed. Each row shows the new size and how much you saved.
Will the compressed JPEG look different?
It’s saved again with lossy compression, so some fine detail is given up for a smaller file. Light gives up the least; keep your original until you’ve checked the result.
Are the date taken and camera details kept?
Yes. They carry over to the smaller file. Only the GPS location goes, and you can keep that too by unticking “Remove location data from photos”.
Why was my PNG refused?
This page compresses JPEGs only and names the format of any other file you drop. For PNG, WebP or AVIF, use Compress image, which keeps each file in its own format.