List of SEO Used HTML Tags – Must-Know SEOs and Digital Marketers

When you are doing SEO activity, there are a few HTML code snippets that you need to be aware of. In this article, we will show you the most important ones, and how you can use them to improve your website’s visibility in the search engines.
There are certain tags that you can use in your code to make your site more visible and easier to navigate. In this article, we will take a look at some of the most important HTML tags for SEO.

Most Important HTML Tags You Need to Know for SEO

In order to make your website as search engine friendly as possible, you need to know a little bit of HTML code. In this article, we will go over some of the most important HTML tags that you need to know in order to optimize your website for search engines.

1. Use Title Tags – Meta Tag Optimization in SEO On-Page

Syntax – <title>Your Title</title>

2. Use Description – Meta Tag Optimization in SEO On-Page

Syntax – <meta name=”descriptioncontent=”Your Site Page Description“/>

3. Header Tags – Heading Optimization in Content

Hierarchy of header tags:

Syntax –

  • <h1></h1> – usually reserved for webpage titles.
  • <h2></h2> – highlights the topic of the title.
  • <h3></h3> – reflects points in regards to the topic.
  • <h4></h4> – supports points from <h3>.
  • <h5></h5> – not often used, but great for supporting points of <h4>.

4. Add Alt Tags in Images

 Note – The alt attribute of this image tag tells search engines the picture is about – 

Syntax – <img src=”tips.jpg” alt=”about tips and solution”>

5. Links Building Syntax (DoFollow and NOFollow Link Structure)


<a href=””>SEO Tips</a> 


<a href=”” rel=”nofollow”>SEO Tips</a>

6. The Robots Tag

Syntax – <meta name=”robotscontent=”follow, index“/>

If you need no index and no follow  use – <meta name=”robotscontent=”nofollow, noindex“/>

In this instance, Google (Any Search Engine) will not index the content nor follow any of the links

7. Use Canonical Tags

For instance, all of these can link to the same site:


Canonical tags are very useful in terms of SERP rankings. These essentially tell sites like Google what domains are the most important to you.

Syntax – <link rel=”canonicalhref=”Main url which you’re focusing.” />

like – <link rel=”canonicalhref=”” />

8. Responsive Site Meta Tags

To inform search engines you have a responsive design available, you can add the following:

<meta name=”viewport” content=”width=device-width, initial-scale=1″>

9. Add Open Graph Tags

Open graph tags help in boosting search Engine Results and display abilities for social media Facebook, and Twitter.

Syntax – <meta property=”og:locale” content=”en_US” />
<meta property=”og:type” content=”website” />
<meta property=”og:title” content=”Tips and Solution – All Tips and Solution – Tips for Solving Your Problems More Easily” />
<meta property=”og:description” content=”All Tips and Solution – Tips for Solving Your Problems More Easily – Tips and Solution” />
<meta property=”og:url”

10. Add Twitter Card

Twitter has its own platform called “Twitter Cards.” Twitter Cards work similar to OG Open Graph with the exception that these are specifically for Twitter.

Syntax – 

<meta name=”twitter:card” content=”summary_large_image” />
<meta name=”twitter:title” content=”Tips and Solution – All Tips and Solution – Tips for Solving Your Problems More Easily” />
<meta name=”twitter:description” content=”All Tips and Solution – Tips for Solving Your Problems More Easily – Tips and Solution”

11. Robots.txt Creation and Add

Robots.txt files instruct crawlers about the entire site – what should be crawled

Robots.txt directives you should know:

User-agent: * — The asterisk informs all spiders to crawl

  • * – The rules apply to every bot unless there is a more specific set of rules
  • Googlebot – All Google crawlers
  • Googlebot-News – Crawler for Google News
  • Googlebot-Image – Crawler for Google Images
  • Mediapartners-Google – Google Adsense crawler
  • Bingbot – Bing’s crawler
  • Yandex – Yandex’s crawler
  • Baiduspider – Baidu’s crawler
  • Facebook – Facebook’s crawler
  • Twitterbot – Twitter’s crawler

Disallow: / — This tells all crawlers to not crawl your entire site.

Disallow: — This tells all crawlers to crawl your entire site.

Disallow: /directory/ — This tells all crawlers to ignore your directory site.

Default Robots.txt allows all sites to crawl

User-agent: *


Create robots.txt and add root domain and check - domain/robots.txt you can als validate robots.txt file

12. HTTPS and www Redirection Domain (URL) with .htacess

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_HOST} ^$ [NC,OR]
RewriteCond %{HTTP_HOST} ^$
RewriteRule (.*)$$1 [R=301,L]

13. Add Schema markup Tag

Create JSON-LD markup –  Using the JSON-LD schema generator tool

Syntax – JSON-LD schema generator tool

14. Content Justify Tag

Use Syntax in HTML – <div align=”justify”> All Contents </div>

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By Ankit kumar

I am passionate about SEO, guest posting, website monetization