:: whatis mod_pagespeed please take a look this.. :: download and compile mod_pagespeed + download depot_tools [ linux: ~ ]# mkdir ~/bin [ linux: ~ ]# cd ~/bin [ linux: bin ]# svn co http://src.chromium.org/svn/trunk/tools/depot_tools [ linux: bin ]# export PATH=$PATH:~/bin/depot_tools + download mod_pagespeed source-code [ linux: ~ ]# mkdir mod_pagespeed [ linux: ~ ]# cd mod_pagespeed/ [ linux: mod_pagespeed ]# gclient config http://modpagespeed.googlecode.com/svn/tags/0.9.10.1/src [ linux: mod_pagespeed ]# gclient sync --force :: compiling mod_pagespeed [ linux: ~ ]# cd ~/mod_pagespeed/src [ linux: src ]# make BUILDTYPE=Release [ linux: src ]# cd install/ [ linux: install ]# ./install_apxs.sh use that command if your apache installed from source.. if your apache installing from repository, do this: [ linux: install ]# make staging [ linux: install ]# make install [ linux: install ]# make stop start :: restarting apache [ linux: install ]# /usr/local/apache2/b