Description
The category filter block allows you to filter posts displayed with the standard Query Loop block by category, without a page refresh. The Interactivity API is fully supported.
Features
✅ The category filter can be displayed as links or as a select dropdown field
✅ You can display a post count number near each category
✅ Custom All Categories text
✅ Works without page refresh (AJAX + Interactivity API)
✅ Sticky positioning
✅ Block styles customization (Font size, Padding, Margin)
✅ The block can add parameters to the page URL, for example, ?filter-category=travel
The plugin also has a PRO version, its main difference is that it supports filtering by any custom taxonomy – Tags, Product Categories, Product Tags, Brands, etc. It has a bunch of other features too.
Pro features
⚡️ Custom taxonomies are supported
⚡️ Multiple taxonomy filters within the same Query Loop block (for example, by categories AND tags)
⚡️ Sort categories (terms) in the filter alphabetically, by post count, or in a custom order
⚡️ The filter can be displayed as buttons with the possibility of style customization (Text color, Background color, Border, Border radius, etc.)
⚡️ Display checkboxes in the dropdown filter to select multiple categories
Blocks
This plugin provides 1 block.
- Category Filter Displays a simple AJAX-powered category filter.
Installation
Automatic Install
- Log into your WordPress dashboard and go to Plugins → Add New
- Search for “Category Filter Block”
- Click “Install Now” under the “Category Filter Block” plugin
- Click “Activate Now”
Manual Install
- Download the plugin from the download button on this page
- Unzip the file, and upload the resulting
category-filter-blockfolder to your/wp-content/pluginsdirectory - Log into your WordPress dashboard and go to Plugins
- Click “Activate” under the “Category Filter Block” plugin
FAQ
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Is there a demo?
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Yes, you can see every filter type in action on the demo page.
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Are custom post types supported?
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Yes, both free and PRO versions allow you to filter custom post types by category. However, if you need to filter CPT by tags or a custom taxonomy, then you will need the PRO version of the plugin.
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Is it tested with the latest PHP version?
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Yes, it is.
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Will it work if the “Reload full page” option is active for my “Query Loop” block?
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Yes, the plugin supports both AJAX and non-AJAX query loops.
Reviews
Contributors & Developers
“Category Filter Block” is open source software. The following people have contributed to this plugin.
ContributorsTranslate “Category Filter Block” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.2.1
- Minor UI improvements
1.2
- Fixed: An issue with the link-type filter styles in the Block Editor in WordPress 7.0
1.1
- Fixed: Deprecation notices in the browser console (Block API version, __nextHasNoMarginBottom, and __next40pxDefaultSize)
- Minor UI improvements
1.0
- Initial release

