Change page URLs with 301 redirects code example

Example 1: 301 redirect

#In .htaccess
  
Redirect 301 /old-page https://www.example.com/new-page

Example 2: 301 redirect

#http to https and www to non-www
RewriteEngine On
RewriteCond %{HTTPS} off [OR]
RewriteCond %{HTTP_HOST} ^www\. [NC]
RewriteCond %{HTTP_HOST} ^(?:www\.)?(.+)$ [NC]
RewriteRule ^ https://%1%{REQUEST_URI} [L,NE,R=301]