How to organize a redirect on the site through .htaccess?

Question

PHP

First of all, I remove the html extension:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^\.]+)$ $1.html [NC,L]

When the user goes to the old address with the extension, I try to redirect it:

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} ^(.*)\.html$
RewriteRule ^ %1 [L,R=301]

After that, the site goes down, but page.html works instead of page.

Answer 1

In your scenario, rather, you need to use reshara through https://apiok.ru/wiki/pages/viewpage.action?pageId...

Answer 2

RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteRule ^(.*)\.html$  /$1 [R=301,L]

RewriteCond %{DOCUMENT_ROOT}/$1.html -f
RewriteRule ^([^.]+)$ /$1.html [L]