hello all, i am doing seo for a website, it was in the ext of .html (example.com/aboutus.html) it has PR 4. Right now my developers need that website want to develop in php, so my ext will change example.com/aboutus.php, now PR will be 0 Could any one help how to solve this issue by redirecting .html to .php without the drop of PR ? I had an another idea, through .htaccess file i made my webpages without any ext so my page right now reflect as example.com/aboutus. But in my server it was in the ext of .html thus Google Panda punish my website ?