Unique Title Checker

A simple plugin that checks the title of any post, page or custom post type to ensure it is unique and does not hurt SEO.

Author:	Bernhard Kau (profile at wordpress.org)
WordPress version required:
WordPress version tested:	6.3.1
Plugin version:	1.7.0
Added to WordPress repository:	04-11-2014
Last updated:	24-09-2023
Rating, %:	100
Rated by:	8
Plugin URI:	https://github.com/2ndkauboy/unique-title-che...
Total downloads:	14 515
Active installs:	1 000+
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This plugin checks the title of a new post/page or any other post type for uniqueness. The plugin provides a filter unique_title_checker_arguments, which enables you to modify the WP_Query arguments used to find duplicate titles. You may use it to search in more than only current post type for a duplicate title.

This plugin is an enhancement of the Duplicate Title Checker by ketanajani which only supports posts but not pages or custom post types.

Screenshots
FAQ

Why should I use this plugin?

Some SEO experts say that you should not have two pages with the same title. If you want to avoid duplicate titles on your website this plugin can help you with that task, as it checks the unqiueness of page titles, before you save or publish a page (or post).

Will this plugin work with my custom post type?

Yes! It was implemented with custom post types in mind. With the default setting, it will check for duplicate titles in the same post type only.

Which titles will be checked?

With the default settings, all posts with any post status (even custom ones) will be included into the check, with the exception of the statuses “draft”, “auto-draft”, “inherit” and “trash”.

Will the plugin block a post from being saved, if the title is not unique?

No! You can always save the post. There might be good reasons for you, to have duplicate titles on your site. The plugin itself does not influence the saving in any kind. It’s whole functionality is only based on some AJAX.

When will the title be checked for it’s uniqueness?

Every time you leave the title input field, the plugin will check the uniqueness of the new title, so you know if it will be unique, before you save the post.

Can I customize the defaults for the check?

Absolutely! The plugin provides a filter called unique_title_checker_arguments. With this filter, you can alter the arguments used for the WP_Query, the plugin uses to get posts with duplicate titles.

Will the plugin check the uniqueness across different post types?

No, it only checks the uniqueness per post type. But you can customize the WP_Query with the filter mentioned in the previous question. For a check across all post types, you can also use this plugin implementing the filter for such a check.

Can I only show messages, if a title is not unique?

Yes, you can simply use the filter unique_title_checker_only_unique_error with __return_true to deactivate it (or use this plugin which implements the filter).

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ChangeLog

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1.7.0

1.6.0

1.5.1

1.5.0

1.4.1

1.4.0

1.3.0

1.2.3

1.2.2

1.2.1

1.2

1.1

1.0

0.1