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What are canonical tags? How to avoid duplicate content

canonical tags

What are canonical tags How to avoid duplicate content

Did you know that you can have multiple URLs and a single website? Take a peek.




A canonical URL is essentially a simple tag that allows Google to understand these websites are one the same. This guide will help you avoid accidentally duplicating your content – a death sentence for your SEO. 

Canonical Tags Usage

What is canonical tags used for?

Simply, canonical tags are an HTML tag that prevents Google from identifying your website as multiple entities. Introducing this tag will simply teach google the source URL of your website – or, in simpler terms, the preferred version of your web page.

Despite sounding so simple, Rel=canonical is a gift to SEO specialists. It enables you to direct traffic under a single entity, rather than multiple pages that will conflict with each other.

This is what a Rel tag looks like:

<link rel=”canonical” href=”https:/simpleadvertising.co.uk” />

Canonicalisation: A brief guide

Don’t let this impossible-to-pronounce word scare you off! Conicalisation is simply the process of selecting your dominant URL – which is where your users will land.

Picking a main URL can be an obvious choice, but it is something you need to do fast: Every non-canonicalised URL will hurt your SEO and, therefore, traffic.

Time needed: 10 minutes.

This is how you should pick a dominant URL for your canonical tag and how to implement it

  1. Pick the single URL you consider most important

    Chose the most important to page to be the canonical page. Ideally the one you get the most conversions from.

  2. In the code or in Yoast add the canonical tag

    Two ways of adding the code. if you have a html or non WordPress website you can add the following code in the header. <link rel=”canonical” href=”https://simpleadvertising.co.uk/” />

    If you have a WordPress website you can install the Yoast plugin and under advance settings direct yoast to the most important page.

    This will help you merge two potentially conflicting pages. And yes, it’s that easy. No need to do anything else.

When you should be using rel=canonical is a whole different subject. Homepages aren’t the only victims of multiple URLs: Many of your products on e-commerce may have multiple landing results. Chances are, you probably never noticed it.

The same principle applies to every other page on your website.


There are many canonical tags guides out there, but none really get to the point. I hope this guide helped you understand more about SEO in a concise and timely manner. If you want to learn more about SEO, why not contact us for a free consultation?

We also offer SEO services, the most effective way to achieve the traffic your website deserves. This is the link you were looking for.