Sohaus

Sohaus Clean Emoji Slugs keeps WordPress permalinks clean when editors use emoji in post titles.
By default, WordPress may include emoji or encoded emoji characters in generated slugs. This plugin removes emoji, pictograms, dingbats, variation selectors and related characters from slugs while leaving the original title unchanged.
Example:
❤️ I love WordPress 🩸
Becomes:
i-love-wordpress
The plugin works automatically when a post, page or supported public post type is saved.
<h3>Features</h3>
<ul>
<li>Removes emoji from slugs.</li>
<li>Cleans already encoded emoji in existing slugs when a post is saved, but does not bulk-update old posts automatically.</li>
<li>Keeps emoji in post titles.</li>
<li>Works on save and update.</li>
<li>Supports posts and pages by default.</li>
<li>Does not add database tables.</li>
<li>Does not track users.</li>
<li>Does not send any data to external services.</li>
</ul>

Sohaus Clean Emoji Slugs

Removes emoji and special symbols from WordPress slugs while keeping them in post titles.

Brandon Himpfen

Disable WP Emojis allows you to remove emojis from your WordPress site’s front-end, including 
the feeds, as well as the administration panel pages and e-mails.

Disable WP Emojis

Removes emojis from the WordPress front-end, admin pages, feeds and e-mails.

Sohaus Clean Emoji Slugs vs Disable WP Emojis