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PageSpeed is open source, developed by people inside and outside Google. We'd love to have your help! Ways you can be helpful:

• File bugs: mod_pagespeed and PSOL issues, ngx_pagespeed issues
• Answer questions on the mailing lists: mod-pagespeed-discuss and ngx-pagespeed-discuss
• Fix things: see how to contribute and pick something interesting off our list of priorities

Additional documentation:

• Design Documents
• Development
• Release Process
• Updating the Public Suffix List
• Updating modpagespeed.com and ngxpagespeed.com