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カテゴリーとタグ – コンテンツを分類するためのSEOベストプラクティス

多くの読者から、カテゴリーとタグのどちらがSEOに適しているのかという質問をよく受けます。これらの要素を理解することは、サイトの構成と検索エンジンの可視性を向上させるために重要です。

WordPressのカテゴリーとタグの違いがよくわからないという方は、あなただけではありません。これらの違いを把握することで、コンテンツをより効果的に整理し、サイトのSEO効果を最大限に高めることができます。

この投稿では、WordPressにおけるカテゴリーとタグの違いを明確にします。それぞれがどのようにコンテンツを整理するために使用できるかを説明し、SEOランキングに与える影響について説明します。

Categories vs Tags - SEO Best Practices for Sorting Your Content

このチュートリアルで取り上げる内容は以下の通りです。下のリンクから興味のあるセクションにジャンプできます:

カテゴリーとタグの違いは?

カテゴリーとタグはどちらもWordPressのタクソノミーです。投稿をさまざまな方法でグループ化するために使用されます。

カテゴリーは投稿を大まかにグループ化するためのものです。一般的なトピックやWordPressサイトの目次のようなものです。カテゴリーは階層構造になっており、サブカテゴリーを作成することができます。

一方、タグは投稿の詳細を記述するためのものです。タグはあなたのサイトのインデックス・ワードと考えてください。タグによって、コンテンツを細かく分類することができます。タグは階層的ではありません。

例えば、WPBeginnerのこのブログ投稿は、カテゴリー’初心者ガイド’にあります。ナビゲーションメニューのBlog ” Beginners Guideをクリックすると、このカテゴリーにあるすべての投稿を見ることができます。

この投稿には次のタグもあります:カテゴリー、カテゴリー対タグ、カスタマタクソノミー、SEO、SEOのベストプラクティス、コンテンツの並べ替え、タグ。

これらのタグは投稿のどこにも表示されません。しかし、ユーザーが当ブログの関連検索でこの投稿を見つけるのに役立ちます。

タグとカテゴリーの最も大きな違いのひとつは、WordPressの投稿はすべてカテゴリーの下に分類されなければなりませんが、タグを持つ必要はないということです。

投稿にカテゴリーを与えない場合、WordPressは自動的に初期設定のカテゴリーに割り当てます。これは「Uncategorized」と呼ばれますが、「Uncategorized」カテゴリーを「Other」や「Miscellaneous」のようにリネームすると便利です。

注:初期設定では、WordPressでカテゴリーとタグを持つのはブログ投稿のみです。しかし、プラグインを使ってWordPressのページにカテゴリーとタグを追加することができます。

WordPressでカテゴリーとタグを追加するには?

カテゴリーとタグは、WordPressで投稿を作成または編集するときに追加できます。右側の「投稿日設定」の下にあります。

Adding categories and tags when creating a post

また、投稿 ” カテゴリーと 投稿 ” タグから新しいカテゴリーやタグを追加することもできます。

カテゴリーやタグの追加方法については、「カテゴリーとは」「タグとは」の説明をご覧ください。

WordPressのカテゴリーはいくつ持つべきか?

カテゴリの数は特に決まっていません。多くの場合、投稿を適切にカテゴリー分けし、サイトを閲覧しやすくするために、5から10の間が望ましいでしょう。

カテゴリーは、投稿の大きなグループを包含するためのものです。サブカテゴリーやタグを使って投稿を小さなグループに分けることができます。

ブログを始めたばかりなら、完璧なカテゴリーリストを考え出そうと心配する必要はない。大まかなカテゴリーを3~5個選び、時間が経つにつれて増やしていけばいい。

WordPressでサブカテゴリーを使う必要はあるのか?

サブカテゴリーを使う必要はありませんし、(WPBeginnerを含む)多くの大規模なブログでは使っていません。しかし、サブカテゴリーは、小さなセクションにグループ化できる投稿がたくさんある大きなカテゴリーがある場合に役立ちます。

例えば、グルテンフリーのレシピが増えている「レシピ」カテゴリーがあるとします。

Posts in the category 'Recipes'

これらの投稿を自分のサブカテゴリーに入れることで、読者が見つけやすくなります。レシピ」に「グルテンフリー」という新しい子カテゴリーを作り、これらの投稿をそのカテゴリーに移動させます。

カテゴリーを投稿URLに使用する

サイトによっては、パーマリンク(投稿URL)にカテゴリー名を使用している場合がありますが、これは設定 ” パーマリンクで設定できます。

Including your posts' categories in your URLs

もし、あなたのサイトがそうであれば、投稿日のURLは次のようになります:
.../recipes/gluten-free-pancakes/のようになります。

投稿を子カテゴリーに移動させると、新しいURLになります:
.../レシピ/グルテンフリー/グルテンフリーパンケーキ/ …/レシピ/グルテンフリー/グルテンフリーパンケーキ

通常、WordPressは古いURLを新しいURLにリダイレクトしようとします。リンクがまだ機能していることを確認する価値はあります。必要であれば、古いURLから新しいURLへの301リダイレクトを作成することができます。

親カテゴリーに投稿を残し、子カテゴリーにも割り当てるという設定もありますが、これには欠点があります。

WPBeginnerサイトにはURLにカテゴリーがありますが、ユーザーには常に「投稿名」だけを含む短いURL構造を使用することをお勧めします。そうすることで、リダイレクトの設定を心配することなく、コンテンツを再編成するための最大限の柔軟性が得られます。

すべての新規サイトは、最新の「投稿名」URL構造を使用しています。WPBeginnerは10年以上前のものなので、レガシーなURL構造になっています。URL構造を変更することはSEO上推奨されません。

1つの投稿を複数のカテゴリーに割り当てることはできますか?

WordPressでは、投稿を複数のカテゴリーに分類することができます。複数の親カテゴリーや、親カテゴリー+サブカテゴリー、サブカテゴリーなどです。

複数のカテゴリーを持つことは、SEO対策になりません。複数のカテゴリーに投稿を割り当てるのは、それが読者にとって最も理にかなっている場合に限ります。

複数のカテゴリーに投稿することで、重複コンテンツによるSEO上の問題が発生する可能性があります。

複数のカテゴリーを使用する場合は、1つの投稿を2つ以上のメイン(親)カテゴリーに入れないようにしてください。各投稿は1つのメインカテゴリーに収まるようにしてください。

投稿に付けられるタグの数に制限はありますか?

WordPressでは、投稿日ごとに設定できるタグの数に制限はありません。投稿に1,000以上のタグを割り当てることも可能です!

しかし、それは絶対にお勧めしない。

タグの目的は、関連する投稿をリンクさせることです。タグは本の索引のようなものだと考えてください。各タグは索引のキーワードのようなものです。

タグはサイトを検索するユーザーにとって便利です。関連投稿を表示するプラグインの中には、どの投稿のトピックが関連しているかを把握するためにタグを使うものがあります。

通常、1投稿につきタグは最大10個までに固定表示することをお勧めします。

カテゴリーとタグ:どちらがSEOに有利か?

WordPressのSEOにおいて、タグよりもカテゴリーを使う方が有利なことはありますか?

短い答えは “ノー “だ。

カテゴリーとタグにはそれぞれ異なる目的がある。カテゴリーを使わなければなりませんが、タグを使いたくなければ使う必要はありません。しかし、読者がサイトをナビゲーションしやすくするために、両方を適切に使用することをお勧めします。

最終的には、ユーザーを念頭に置いてサイトを設計する必要があります。すべての検索エンジンは、ユーザーにとって最も有益なコンテンツを表示したいと考えています。

つまり、最高のユーザビリティを実現するためにコンテンツを整理することは、SEOランキングの向上にもつながるということだ。

検索結果でのカテゴリーやタグの見え方をコントロールできるか?

市場で最高のWordPress SEOプラグインであるAll In One SEO (AIOSEO)を使用することで、検索エンジンの検索結果ページにカテゴリーやタグが表示される方法をカスタマイズすることができます。

まず、All In One SEO PremiumまたはAIOSEO無料プラグインのいずれかをインストールして有効化します。詳しくは、WordPressプラグインのインストール方法のステップバイステップガイドをご覧ください。

有効化した後、All In One SEO ” 検索外観に移動し、「タクソノミー」タブをクリックしてカテゴリーとタグの検索外観を設定する必要があります。

All in One SEO Taxonomies Settings

初期設定はほとんどのサイトで機能しますが、さまざまな方法でカスタマイズすることができます。

例えば、検索エンジンがカテゴリーやタグアーカイブのリストをインデックスしないようにしたいユーザーもいます。これは、Duplicatorコンテンツの問題を防ぎ、検索エンジンが実際の投稿やページを優先することを促します。

カテゴリー」セクションで、「検索で表示」オプションを「いいえ」に切り替えるだけです。

AIOSEO Search Appearance for Categories

次に、タグのセクションまでスクロールダウンして同じことをする。

ページの上部または下部にある「変更を保存」ボタンをクリックして、設定を保存してください。検索エンジンはカテゴリーやタグのアーカイブページをインデックスしなくなります。

AIOSEO Search Appearance for Tags

WordPressコンテンツの分類に関するエキスパートガイド

この投稿が、カテゴリーとタグ、そしてコンテンツを分類するためのSEOベストプラクティスについてご理解いただく一助となれば幸いです。WordPressコンテンツの分類に関する他のガイドもご覧ください:

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Editorial Staff at WPBeginner is a team of WordPress experts led by Syed Balkhi with over 16 years of experience in WordPress, Web Hosting, eCommerce, SEO, and Marketing. Started in 2009, WPBeginner is now the largest free WordPress resource site in the industry and is often referred to as the Wikipedia for WordPress.

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Reader Interactions

352件のコメントLeave a Reply

  1. ME VK

    Tag One Word or Two?

    • WPBeginner Support

      That choice would be up to you :)

      Admin

  2. Hamza Bashir

    I have a question. I have seen some websites that add extra tags. These tags have nothing to do with sorting of posts rather they do keyword stuffing in multiple tags. What is your take on this. Like I have seen such posts with 30 tags and all of them were keywords not tags. Does it help in SEO?

    • WPBeginner Support

      We would only recommend using tags for organization at this time.

      Admin

  3. Chandramohan

    Hi, above you said that having a single post in multiple categories can lead to duplicate content, but what about tags, assigning multiple tags to a single post, doesn’t that too lead to duplicate contents? Because, tags do have a URL right? Will it effect the SEO?

    • WPBeginner Support

      While tags could run into that issue, it is unlikely to cause an SEO issue with how tags are handled.

      Admin

  4. Rob Kenyon

    No such thing as ‘Document Settings’ on the right hand of my page.
    No sign of Tags or Categories anywhere.

  5. Rupam Sarmah

    I have almost 10 category and almost 50 sub category in my lyrics website ..but I am not using any tag..is there any issue in seo

    • WPBeginner Support

      There should not be.

      Admin

  6. Richard Martin

    Like!! Great article post.Really thank you!

    • WPBeginner Support

      You’re welcome, glad our guide was helpful :)

      Admin

  7. Todd

    Is there anything wrong with having sub-sub-categories? I do think this helps my users find posts on my site, and it fits the hierarchy, but maybe they should be tags instead

    • WPBeginner Support

      If it works for how you are organizing content then it is fine unless you think of a better way to organize your content :)

      Admin

  8. Milad

    can we use this instructions for wocommerce and products as well ?

    • WPBeginner Support

      You can if you would like

      Admin

  9. hdys

    I have a page on my site (not category or tag) and the topic is “France tour”, and I also have a category name “France tour”, is it correct? how can I show google that my landing page is Target and the category is different?

    • WPBeginner Support

      That type of markup would naturally be handled by your SEO plugin if you are using one on your site.

      Admin

  10. Derek

    I maintain a web site created using WP that has no blogs/posts i.e. its web pages only. Iam concerned that search engines find the site/right page but I do not know if catagories and tags are relevant to the site. Is their any guidance on this?

    • WPBeginner Support

      It would depend on how much content you have but pages don’t have categories by default.

      Admin

  11. Itivere Desmond

    I love this article, it answed ALL of my questions.

    • WPBeginner Support

      Glad our guide was helpful :)

      Admin

  12. Anjoo

    Would the same apply for pages?

    • WPBeginner Support

      Pages don’t use categories by default. :)

      Admin

  13. Adeel Sami

    Always feel great to land on the wisdom shared by you guys! :)

    For me, I always keep ‘NoIndex’ the tags and ‘Index’ the categories; is it wise to do so?

    I feel like there would be too much of the URLs getting indexed in the search engines coming up with the duplicate/same content.

    Lastly, always the great wokr! :)

    • WPBeginner Support

      That would be personal preference, you should not need to noindex the tags

      Admin

  14. Robin

    I think you can describe more about index and no indexing of tags and categories. There is lot of confusion about this. Also category and tag sitemaps should be submitted to google search console or not?

  15. DannyNab

    Thank you very much for this insightful article. I’m really blessed reading this piece.

    • WPBeginner Support

      Glad you found our guide helpful :)

      Admin

  16. Rehoboth

    Pls i created a music and news blog I have about six categories no tag and for my music I use two categories which is trending categories and music categories will I have any issues with that

    • WPBeginner Support

      You should not have an issue with that.

      Admin

  17. Patrick

    Great article, very helpful. My only question that I have been unable to find an answer to is this: Should I noIndex Category pages?

    While I think a user that landed my category page would find value, I have read that it can hurt SEO as your category page is essentially competing with your posts under that same category.

    • WPBeginner Support

      You would want to reread the section ‘Is it okay to assign one post to multiple categories?’ for our opinion on category pages. Normally, there is no need to noindex category pages.

      Admin

  18. Devin Egger

    GREAT content and SUPER HELPFUL article, but TONS of typos. : D

    • WPBeginner Support

      Thanks for your feedback on our article :)

      Admin

  19. Marlene Permin

    thank you for the article, i understand the difference a little better now, but i have a question.
    we have a magazine, and use wordpress, to have our site.
    we have over 800 articles in a lot off different topics and a lot off them have different tags on them,
    with means we now have over 600 different tags on our site.
    (i have taken over running the site from a former coworker) and tags where always entered when she added our new articles.
    should i remove the tags from our site or should i leave them?
    i dont want to hurt our Seo.

    • WPBeginner Support

      That would be a personal choice question but you may want to reduce the number of tags you have over time so more posts are under a tag.

      Admin

  20. Tala

    Thank you for helping me to be a better novice site builder for my small corner of the web! Let me not forget to mention that thought this is my first “comment” here, I have watched your YouTube for years and am grateful for your wealth of knowledge. Happy 2020!

    • WPBeginner Support

      You’re welcome, glad our recommendations were able to help you :)

      Admin

  21. Martin

    Thanks for this (and the site in general).

    As someone who has worked on many websites, I’m comfortable with the categories/taxonomy, but being new to WordPress the tags are trickier to get my head around.

    I actually think the key point is in your last paragraph – tags can be across multiple categories, while sub-categories should only sit under the one category.

    • WPBeginner Support

      You’re welcome, glad you like our site and our content :)

      Admin

  22. Jennifer

    THANK YOU! THANK YOU! THANK YOU! I finally understand the difference and how to use them now!

    • WPBeginner Support

      You’re welcome, glad our guide could help :)

      Admin

  23. Zahid H

    I am starting a WP site on phones. I don’t have any posts and everything is under custom post types or static texts in a page. It’s meant to be a website rather than a blog, are categories and tags still needed? Thabks

    • WPBeginner Support

      While not required, they can be helpful for grouping similar products

      Admin

  24. Oty Emmanuel

    Thanks very much for this writeup. I have lots of irrelevant tags littered all over my site. Will it hurt my site if i delete them?

    • WPBeginner Support

      You would likely want to create redirects for the deleted tags to prevent 404 pages, other than that you can feel free to remove them.

      Admin

  25. James

    Would you recommend renaming the tag base from “tag” in the permalinks section?

    I’ve seen another site that has changed theirs to “all-about” and I wondered whether there were any SEO reasons for doing this.

    • WPBeginner Support

      You would need to redirect any post using the old link but that shouldn’t have a major SEO impact either way.

      Admin

  26. TJennings

    Great article, and I sent a link to my client because it’s so good, but could use a lot of proofreading. A lot.

    • WPBeginner Support

      Thank you for your feedback :)

      Admin

  27. John J

    This is a great article and helped me understand the categories and tags but how do they relate with image galleries if you have hundreds of images?

    • WPBeginner Support

      Unless the images are in multiple posts or you’re using a plugin that adds them to images, they aren’t added by default to images

      Admin

  28. Jim Gersetich

    Excellent article! It’s very helpful. I’ll be implementing on my blog site immediately.

    Thank you!

    • WPBeginner Support

      Glad you like our recommendations :)

      Admin

  29. Surojit Mukherjee

    Great explanation sir. ..I had little bit of confusion about categories & tags, but after reading your article it is clear to me. ..
    Thanks a lot

    • WPBeginner Support

      Glad our article could clear up your confusion :)

      Admin

  30. paula

    I have a WP video site where members can post YouTube links to their videos. I have several categories for the video posts.

    I want to have a “featured” type of display on the home page where I, as the admin, select videos to feature, or post my own videos there, but I want this to be off-limits to users. Otherwise, I think everybody might be labeling their video as “featured.”

    Can any of this be controlled by categories or tags? Is there a way to have a category or tag that only the admin can apply?

    Any hints are appreciated.

  31. REGS

    Very helpful this blog. I learned many new strategies, especially good use of categories in WordPress. You did great work by sharing it.

    • WPBeginner Support

      Thank you :)

      Admin

  32. Pamela Torres

    I have a WP blog. All of my postings are falling under my Home Page. Nothing is showing up under any of the categories I have across the top. I need to know how to move those posting from Home, to the category that they need to be under.

    Please help me. I worked on it until 3 a.m. and it was frustrating. Also I need to know how to set up a “leave a reply” after each of my posts.

    • WPBeginner Support

      For the menu items, rather than pages in your menu you would want to ensure you placed the categories themselves in your menu and your posts are set as part of those categories.

      To allow comments you would want to ensure you’re allowing new comments under Settings>Discussion for new posts and your old posts should have a discussion settings area to enable comments

      Admin

  33. rachana bhapa

    found this information quite useful. I’m starting out new with my travel blog and I found so many answers and information related to my queries on your site. keep up with the great work. !!!

    • WPBeginner Support

      Glad our site’s been helpful :)

      Admin

  34. R. Murillo

    Thank you for sharing your expertise with us. It has been very helpful.
    As they say, knowledge is power, how true. Simple things seem to be very complicated when they are not.

    I am still struggling to get my word press blog to work.

    r. murillo

    • WPBeginner Support

      Glad our article could help, feel free to reach out to us should you continue to struggle with your site :)

      Admin

  35. Avantela

    Wow, thanks for the insight. It’s easy to understand. It helps me solving my problem with my new blog.

    • WPBeginner Support

      Glad our article could help you :)

      Admin

  36. Abdul

    This is Great Piece of work

    • WPBeginner Support

      Glad our article could be helpful :)

      Admin

  37. Rashmi

    Thanks for posting this. Very useful information for wordpress users.

    • WPBeginner Support

      Glad you found our tutorial helpful :)

      Admin

  38. Susan Soltrelly

    Really helpful! I was in the same boat, wondering whether I still needed to tag posts. It seems a bit archaic.

    However, I do mark some posts under more than one category. I feel like if I had to narrow my categories further I’d have 50 of them! I do know that at least I find them helpful when I’m looking up old posts at our blog.

  39. Ashwani

    Do you recommend ideal no. Would be in between 5-10 for tags, plz answer

  40. kym

    Hi you mentioned: “Yes, you will have to go back and edit your older posts. If your URL structure is /category/postname/, then you have make sure you are using the Redirection plugin. It automatically redirects your modified posts to their new URL, so you can keep all the search engine rankings” But elsewhere in another blog, https://www.wpbeginner.com/wp-tutorials/seo-friendly-url-structure-for-wordpress/ it said that we will lose search engine ranking if we change permalink structure.

    Why is there a contradiction?

    • WPBeginner Support

      Hi Kym,

      Yes, you will lose search rankings if the old URL starts showing 404 error or duplicate content. That’s why you need to properly redirect URLs so that search engines can fine the content on new location and start showing it in the search results.

      Admin

  41. Emma

    On the subject of assigning multiple categories to a post…I see what you mean about this generally being a sign of a much-needed category reorganization, but I would like to point out an exception. My blog is about science—it’s open to every field, though I’ve just started out with 12—and each science field is a category. However, science fields are often multidisciplinary. For example, I might write an Astronomy post on star stuff, but that also fits into Spectroscopy. There are also Astronomy and Chemistry crossovers. I think that ultimately, it’s up to the blogger how they want to organize their categories…but these are all good points :)

    I have a question…will it affect my search rankings at all if I use the “science” tag for all posts? If so, positively or negatively?

    • WPBeginner Support

      Hi Emma,

      We agree. As for the ‘science’ tag. If all your posts are tagged science then basically the science tag pages will be duplicate of your main archives with essentially the same content. This could effect your SEO negatively.

      Admin

  42. J. Adams

    I would like to ask that if you assign a post to a category and a tag at the same time, won’t that result in duplicates and affect your search engine ranking?

  43. Marta

    As far as I know, it is important that I give every category and tag not only meta tags but also a description. This can be also a longer text. I planned to do so and optimize those urls for seo too (it was suggested by a seo tool) but these descriptions are usually not visible for my readers. But I thought they would be worth reading and could be a nice introduction into that cercain category. Should I make the effort in the first place and if I do so, how can I make these descriptions visible, readable for my users?

  44. Annavaram

    Great explanation! I find this post highly useful, clearing up the confusion I have had about the categories and tags for a long time. I recommend that the net wonderers spend some time and read it with a peace of mind if they were ever to know what “categories” and “tags” really are.

  45. Raheem

    Hi,
    For a site that has mobile phone, automobiles, banking, technology as parent categories; review, tutorials, interviews and news are being handled by tags. But the ‘news’ is always in abundant, i mean they are in hundreds.
    Should i make it (news) a separate parent category and select two parent categories for any post that is news as well as belong to any of the other parent categories or i should keep handling it through tag? and should on the basis of news tag, it can be submitted to google news?

  46. Sarah

    If we move categories into subcategories, does that break links/cause a Google penalty?
    Thanks

    • Kay

      I also have this question. Please advise. Thanks!

      • Editorial Staff

        If you don’t setup proper SEO redirects, then yes it can have a negative SEO impact for those pages.

        Admin

  47. Rakhee

    I am in the process of creating a website and am confused whether to create categories in my menu or pages. I understand that pages are for static information such as About me, contact me etc. If I wanted to create a menu bar containing a nutrition, treatments folder etc would you suggest using pages or categories? Thanks!!

    • WPBeginner Support

      Hi Rakhee,

      If you are planning on continuing to add new content into those topics, then categories are the way to go.

      Admin

  48. Debra

    Thanks for the free education. I really appreciate it. I’ll put it to use in my blogs.

  49. Luz K Lee

    This is an excellent tutorial on categories, sub-categories, and tags. You have given me a better understanding on how best to structure my site. Thank you.

  50. Doug Robertson

    Thanks for the great information.

    I need to create an index that links a series of posts to one master post. Basicly, a master post and follow on update posts.

    Is there a way to create a Tag I can use to organize and link these that can’t be seen by users in the Tag cloud and such?

    Any suggestions would be helpful.

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