Jpeg Online Laboratory
- Web based front end to the jpegtran utility for image compression lossless JPEG transcoding all transformations performed by this tool retain the original image contents, with no further quality loss.
- http://www.reporter.de/jpeg-lab.html

Webjectives
- Image optimization - a free resource for webmasters.
- http://www.webjectives.com/upload.htm

The JPEG Wizard
- Online JPEG Wizard Editing/Compression. A free service of Pegasus Imaging to provide true JPEG compression.
- http://jpegwizard.com/

GIF Wizard
- Fee based service for compressing GIFs optimally. Online free analysis available.
- http://www.gifwizard.com/

Spinwave
- Optimize site size and download times of JPEG and GIF images by up to 90%. Free JPEG and GIF compression tool works automatically from a local disk, ftp or www.
- http://www.spinwave.com/

Online JPEG Compressor
- Reduces the size of your JPEG files so that they will load faster.
- http://www.chami.com/jc/