301 redirect from slash to without slash

Examples of redirects from pages with a slash to without a slash:

Example 1 – 301 redirect from slash to without slash

RewriteCond %{REQUEST_URI} !\?
RewriteCond %{REQUEST_URI} !\&
RewriteCond %{REQUEST_URI} !\=
RewriteCond %{REQUEST_URI} !\.
RewriteCond %{REQUEST_URI} ![^\/]$
RewriteRule ^(.*)\/$ /$1 [R=301,L]

If your site uses a CMS (for example, Opencart), then after adding the above conditions to .htaccess, the admin panel will stop working. Because it is necessary for the admin panel not to use a redirect from slash to without slash.

Example 2 – 301 redirect from slash to without slash (except admin panel)

RewriteCond %{REQUEST_URI} !\?
RewriteCond %{REQUEST_URI} !\&
RewriteCond %{REQUEST_URI} !\=
RewriteCond %{REQUEST_URI} !\.
RewriteCond %{REQUEST_URI} !^/admin/.*$
RewriteCond %{REQUEST_URI} ![^\/]$
RewriteRule ^(.*)\/$ /$1 [R=301,L]