AI SEO Course · WordPress Website's Technical SEO · Notes

Notes: WordPress Website's Technical SEO

Arun Nagarathanam · 10 Jul 2026 Notes · 42 of 54 in this course

An exclusive resource for students of Arun's AI SEO Course.

In This Section, You Will Master:

Tackling the duplicate content issues that are automatically created by WordPress.
Using the noindex tag strategically to control what Google shows in search results.
Finding and fixing site-killing 404 "Not Found" errors with a simple and effective workflow.
Leveraging canonical tags to consolidate your authority and tell Google which page is the "master" version.

How to Use These Notes:

These notes are your efficient companion to the video lectures.

Focus on the Key Takeaways to absorb the core concepts.
When you see Actionable Items or Applied Learning, it's your cue to put theory into practice.
For conceptual lectures, use the Food for Thought to think more deeply about the 'why'.

The Growth Payoff:

Mastering these technical details ensures that search engines see a clean, efficient, and authoritative version of your website, rewarding you with better rankings and a better user experience.

WordPress Website's Technical SEO

Taming Duplicate Content

Key Takeaways

01WordPress automatically creates pages for categories, tags, author archives, and date archives.
02If you don't actively manage these pages with unique content, they often just become lists of post excerpts, creating duplicate content across your site.
03The noindex tag is your solution. It tells Google: "You can crawl this page, but please don't show it in search results."
04This cleans up your site's "index," making the content that is shown in Google appear more unique and valuable.
05Crucial Caveat: For e-commerce sites or blogs where category/tag pages are valuable landing pages (e.g., a user searching "best running shoes" lands on your "running shoes" category), you should NOT noindex them. Instead, you should optimize them with unique descriptions and content.

Food for Thought

Look at your website's category and tag pages. Are they strategic assets that could attract search traffic? Or are they just messy, duplicate lists of posts? Your answer determines whether you should be optimizing them with content or hiding them with a noindex tag.

Actionable Items

Configuring Your Archives with Yoast SEO

Go to Yoast SEO > Search Appearance > Archives.
Author Archives: If you are the only author on your site, you can simply turn this OFF. If you have multiple authors, keep it ON but consider hiding archives for authors who haven't published any posts.
Date Archives: It's almost always a good idea to turn this OFF to avoid duplicate content. If you must keep them for users, assign a noindex tag by choosing OFF for "show date archives in search results."
Go to the Taxonomies Tab.
Categories & Tags: Decide if these are valuable landing pages.
- If YES, keep them ON and make sure you add unique content to each one.
- If NO, turn them OFF to noindex them.
Category URLs: It's recommended to select "Remove" to get rid of the /category/ slug from your URLs, making them cleaner (e.g., yoursite.com/running-shoes instead of yoursite.com/category/running-shoes).

Tools & Resources Mentioned:

Yoast SEO Plugin

WordPress Website's Technical SEO

Fixing 404 "Not Found" Errors

Key Takeaways

01A 404 error happens when a user (or Google) tries to visit a page on your site that doesn't exist, either because it was moved or deleted.
02Too many 404s create a frustrating experience for users and waste Google's "crawl budget."
03You don't need to fix every 404 error. Many are caused by bots trying to find vulnerabilities and can be ignored. Your priority is fixing the 404s that Google Search Console reports.
04If you intentionally delete old, low-quality pages and don't have a good replacement, a well-designed custom 404 page is the best solution. It should include your logo, navigation, and a search bar to help users find their way.

Applied Learning

The 404 Fix Workflow

Find the Errors: Go to your Google Search Console. Navigate to Indexing > Pages. In the "Why pages aren't indexed" section, click on Not Found (404) to get your priority list.
Install the Tool: On your WordPress site, go to Plugins > Add New and install and activate the Redirection plugin.
Create the Redirect:
- Copy a 404 URL from Google Search Console.
- In WordPress, go to Tools > Redirection.
- Click "Add New."
- Paste the broken URL into the Source URL field.
- Find a relevant, working page on your site and paste its URL into the Target URL field.
- Click "Add Redirect." Now, anyone visiting the old, broken URL will be automatically sent to the correct page.

Tools & Resources Mentioned:

Google Search Console
Redirection Plugin

WordPress Website's Technical SEO

Mastering Canonical Tags

Key Takeaways

01A canonical tag is your way of telling search engines: "I have several similar pages, but this specific one is the official master copy."
02It solves duplicate content issues without deleting pages or creating user-facing redirects. The old page remains live for users, but all its SEO value is passed to the "master" page in the eyes of Google.
03A canonical tag passes the same amount of link juice as a 301 redirect.
04Key Use Case: You write a new, comprehensive article that makes an older article on the same topic redundant. Instead of deleting the old post (and its valuable comments), you can place a canonical tag on it pointing to the new one.

Actionable Items

Implementing Canonical Tags

For Individual Pages (with Yoast SEO):
1. Go to the new, "master" post and copy its full URL.
2. Go to the old, "duplicate" post and click "Edit Post."
3. Scroll down to the Yoast SEO section and click the "Advanced" tab.
4. Paste the master URL into the Canonical URL field and update the post.
For Site-Wide Duplication (with Redirection Plugin):
1. In WordPress, go to Tools > Redirection > Site.
2. HTTP to HTTPS: Enable "Force a redirect from http to https" (ensure your SSL certificate is working first).
3. Preferred Domain: Choose either www or non-www as your standard and force a redirect. This ensures yoursite.com and www.yoursite.com aren't seen as two different sites.

Top 5 Canonical Tag Mistakes to Avoid:

Don't use a canonical on a paginated article (e.g., page 2 pointing to page 1). They aren't duplicates.
Don't use relative URLs (like /my-post). Always use the full, absolute URL (https://www.yoursite.com/my-post).
Don't use more than one canonical tag on a single page. Google will ignore all of them.
Don't point a valuable category page's canonical to a single article. You'll prevent the entire category from ranking.
Don't place the tag anywhere but in the <head> section of the HTML.