CSE HTML Validator

You issue a warning message suggesting not using a .index explicit url.

If you do that, sometimes you will get a Permanent redirect asking you to put the .index in. In that case, you are probably best to put the .index in to avoid the overhead of future redirects.

Hello,

The message I believe you are referring to is just a message (blue) and is not an error (red) or warning (yellow) message. If the web server doesn't like it an issues a permanent redirect when you don't explicitly link the index page (like index.html or index.php), then it may be best to disable that message/suggestion, but I think this suggestion is reasonable and helpful in most cases.