The WordPress plugin editor allows administrators to edit plugin files from the dashboard. It can be useful in emergencies, but it is also risky because a syntax error can break the site.
Check wp-config.php
The editor is often disabled with this constant:
define('DISALLOW_FILE_EDIT', true);To enable the editor, change it to:
define('DISALLOW_FILE_EDIT', false);Important precautions
Make a backup before editing plugin files. Use SFTP or version control when possible, and avoid editing production code from the dashboard unless there is no safer option.
Recommended workflow
For permanent changes, create a small custom plugin or a child theme instead of modifying third-party plugin files. Updates can overwrite plugin edits.