Tags are one of the most misunderstood features in WordPress. Many bloggers treat them like old-school meta keywords and add a dozen to every post, hoping for an SEO boost. I did it too. The truth: tags do not improve rankings on their own, and too many of them can create dozens of thin pages that hurt your site.
Used well, though, tags help readers find related posts. Here is everything you need to know about WordPress tags in 2026.
What Are WordPress Tags?
Tags are labels that describe specific details of a post. Think of categories as the main sections of your blog (the table of contents), and tags as the index at the back of a book. Each tag gets its own archive page listing every post with that tag, at an address like yourblog.com/tag/pinterest/.
For example, a post in the Social Media category might have the tags Pinterest and Chrome extensions.
Tags vs Categories
| Categories | Tags | |
|---|---|---|
| Purpose | Broad topics of your blog | Specific details of a post |
| Required? | Yes (every post has at least one) | No, optional |
| Hierarchy | Can have subcategories | No hierarchy |
| How many per post | Usually one or two | A few, if any |
Do Tags Help SEO?
Not directly. Google does not give tagged posts special treatment. Tag archive pages can help a little by grouping related content, but only if each tag has several posts. Tags with one or two posts create thin, near-duplicate pages, which is why many SEO plugins set tag archives to noindex by default or make it easy to do so.
The real benefit of tags is for readers: clicking a tag shows them more posts on that exact topic, which keeps them on your site longer.
How to Use Tags the Right Way
- Plan a small set of tags (often 10 to 50 for a typical blog) and reuse them, instead of inventing new ones for every post.
- Use 1 to 5 tags per post, only ones that are truly relevant.
- Keep tags short, one to three words.
- Do not repeat category names as tags.
- Make sure each tag is used on several posts. If a tag will only ever have one post, do not create it.
- Decide on indexing: if your tag pages are thin, set them to noindex in Rank Math (Titles & Meta > Tags) or Yoast (Settings > Categories & tags).
How to Add Tags to a Post
In the block editor, open the Post settings sidebar, find the Tags panel, type a tag, and press Enter or a comma. Existing tags are suggested as you type, which helps you reuse them.
How to Clean Up Old Tags
If your blog has years of messy tags, clean them up:
- Go to Posts > Tags and sort by the Count column.
- Delete tags used on only one post (select them, choose Delete from Bulk actions, and click Apply). Deleting a tag does not delete posts.
- Merge similar tags (for example, “SEO tip” and “SEO tips”) by editing posts or using a term management plugin.
- Redirect important deleted tag URLs to a related category or post if they had traffic, using your SEO plugin’s redirect manager.
Frequently Asked Questions
How many tags should a WordPress post have?
Usually 1 to 5 relevant tags. Many blogs do fine with no tags at all.
Should I noindex tag pages?
If your tag pages are thin or duplicate your categories, yes. If a tag page is a useful, well-filled collection of posts, you can keep it indexed.
Are tags required in WordPress?
No. Every post needs a category, but tags are optional.
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