HTTP compression

HTTP compression is a capability built into both web servers and web browsers, to make better use of available bandwidth. HTTP protocol data is compressed before it is sent from the server: compliant browsers will announce what methods are supported to the server before downloading the correct format; unsupported browsers will download uncompressed data. Data is usually compressed with either deflate or gzip modules specific to the server software.

Servers that support HTTP compression

1. Microsoft IIS: built-in or using 3rd-party module
2. Apache HTTP Server, via mod_deflate or mod_gzip
3. Caucho Resin Professional, via GzipFilter
4. Sun Java System Web Server
5. Zeus Web Server
6. Lighttpd, via mod_compress
7. Nginx - built-in
8. RaidenHTTPD - built-in
9. Serenity Server - built-in.