I have a question about the links. My site was in php so all of my website links used to be mywebsite.com/anything.php but now i have moved it to WordPress and now my links are mywebsite.com/anything. Will it affect the ranking of keywords although there is no 404 errors as previous links are getting redirected to the new ones. Quick reply would be highly appreciated.
Redirect doesn't guarantee transfer of rankings and juices towards to new site but is great help. Build new better links for the new one to help out better.
Whenever, you introduce any change into your website, your ranking will dwindle. If changes are not very huge, things will bounce back to normal very soon. Make sure all the new backlinks pointing towards your website are not broken.
No, this won't change anything! If anything is your keyword for the page you are trying to rank for... everything is just great