What is a Category in WordPress?
A category is a built-in WordPress taxonomy that groups blog posts on similar topics so readers can browse related content. Every post is filed under at least one category (WordPress assigns the default, ‘Uncategorized’, if you don’t pick one), and categories can be nested under a parent to build a topic hierarchy.
More About Categories
Categories let readers browse a blog by topic instead of by date. Most blogs run in reverse chronological order, newest first, so a category menu in the navigation bar gives visitors a second path to the posts they’re after.
How categories work
Categories are hierarchical: a parent category like Animals can hold sub-categories like Mammals and Reptiles. Each category gets its own archive page at a URL like example.com/category/animals/, listing every post filed under it. A parent’s archive includes posts from its sub-categories too, so the Animals page also shows the Mammals posts. Category names and slugs must each be unique.
Those archive pages, plus category links in menus and sidebars, are the payoff: they turn a dated feed of posts into a library a reader can browse by subject.
Creating and managing categories
You create categories under Posts → Categories in the dashboard. Each one takes a name, a slug (the lowercase version used in the URL), an optional parent category to nest it under, and an optional description that some themes display. You can also add a new category without leaving the post editor from the Categories panel.
By default, only users with the Editor or Administrator role (or a multisite Super Admin) can create, edit, or delete categories, though plugins can grant that capability to other roles. Authors and Contributors can still assign existing categories to their own posts, and a single post can belong to several categories.
The default category
Every post is filed under at least one category. If you publish without choosing one, WordPress assigns your site’s default category, named Uncategorized on a fresh install. A live Uncategorized archive is the most visible beginner tell on a new blog, so rename that category under Posts → Categories or point the default at a real topic under Settings → Writing.
Categories themselves can’t be disabled. Hiding the Categories column on the Posts screen under Screen Options only changes which columns the admin table shows, not how your posts are organized.
Categories vs. tags
Categories and tags are the two taxonomies WordPress ships with, and they do different jobs:
- Categories are hierarchical and broad, and every post gets at least one. Use them for your blog’s main sections, like Desserts on a cooking blog.
- Tags are flat, specific, and optional. Use them for cross-cutting details, like gluten-free or chocolate, that connect posts across categories.
WordPress’s own tutorial recommends one primary category per post, with tags carrying the detail. When you’re unsure which to reach for, ask whether the label is a section of your blog or a keyword inside it: sections become categories, keywords become tags.
Frequently Asked Questions
- Nothing is deleted except the category itself. Posts that were only in that category are reassigned to your site’s default category; posts with other categories keep those. Deleting a category is permanent, so rename it instead if you just want a different label.
- One is the usual advice: WordPress’s official tutorial recommends primarily one category per post, covering its broad topic, with tags adding detail. Multiple categories are allowed, but filing one post under many fills several archive pages with the same content, which helps neither readers nor search engines.
- No, not by default. WordPress documentation is explicit that pages don’t allow taxonomies (categories, tags, or custom ones) unless a plugin adds that support. Pages are organized differently, through parent and child hierarchies and navigation menus.
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