.htaccess: Rewrite .html file extensions with htaccess ex.redirect from /blog.html to /blog too. No duplicate pages for SEO

.htaccess

# This tag ensures the rewrite module is loaded
<IfModule mod_rewrite.c>
  # enable the rewrite engine
  RewriteEngine On
  # Set your root directory
  RewriteBase /

  # remove the .html extension
  RewriteCond %{THE_REQUEST} ^GET\ (.*)\.html\ HTTP
  RewriteRule (.*)\.html$ $1 [R=301]

  # remove index and reference the directory
  RewriteRule (.*)/index$ $1/ [R=301]

  # remove trailing slash if not a directory
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_URI} /$
  RewriteRule (.*)/ $1 [R=301]

  # forward request to html file, **but don't redirect (bot friendly)**
  RewriteCond %{REQUEST_FILENAME}.html -f
  RewriteCond %{REQUEST_URI} !/$
  RewriteRule (.*) $1\.html [L]
</IfModule>