Hi, I have a web page ranking well in different SEs, it has a lots of backlinks now. I am thinking to adjust the filename, but would I lose the SERP and all backlinks? Thanks
if you have www.mysite.com/page1.html and you change that to www.mysite.com/buy-widgets.html then you may lose ranking on that page for a time Make sure you ptu a permanent redirect in place though and google "should" just treat the new page as the old one. including the keywords in your filename is a very good idea and will benefit your rankings so it may be worth just doign in now rather than later and building new links and redirect all the old ones using a 301 permanent redirect
yes, you can change and put 301 redirect from your old page to new pages. The file name should be properly optimized.