shuliakmaster

CommentOff is a lightweight plugin that gives you full control over comments on your WordPress website.
With just a few clicks, you can: 
– Disable the comment form on posts and pages. 
– Hide all previously published comments from the frontend. 
– Remove all comment-related menus and elements from the admin panel and toolbar.
Perfect for website owners who want to fully disable comment functionality — globally, without editing themes or templates.
<h3>Features</h3>
<ul>
<li>Hide the comment form on all public posts/pages.</li>
<li>Prevent users from submitting new comments.</li>
<li>Hide already published comments on the frontend.</li>
<li>Remove “Comments” from admin menus and dashboard widgets.</li>
<li>Clean and safe implementation using WordPress hooks and filters.</li>
<li>No impact on performance.</li>
</ul>

CommentOff

Easily disable all comments on your WordPress site: hide the form, block existing comments, and remove comment elements from the admin panel.

Mitch

Disable all wordpress comments including past/old posts as well as future posts. 
If posts had comments they will simply not display instead visitors will see comments disabled in the comments section

WordPress Disable All Comments

Disable all wordpress comments including past/old posts as well as future posts.

CommentOff vs WordPress Disable All Comments