What is Canonical? Why is this card used by so many Seoer brothers? It can be said that this is considered a pretty good card and helps us a lot in the process of doing SEO. Join me to learn about the canonical tag to see the effect of the tag in SEO. When it comes to learning about how to best optimize your website for search engines, it can seem as though the terms or buzzwords that have been created during your exposure to SEO leave you confused or not. know about it. Let’s find out with SEMTEK now.

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What is Canonical?

Since early 2009, all major search engines have supported the canonical tag. However, not many web developers or users implement canonicalization of their URLs despite the benefits. This could be due to a lack of understanding about canonical tags, its benefits, or how to use it.

1. What is Canonical tag?

Canonical tag is a way to declare to search engines about identifying content for a path subject (unique URL), in case your article generates multiple URLs, it is based on the canonical Google tag. will know which page the content belongs to and will not evaluate it as duplicate content on a website.

The use of the rel=”canonical” tag is therefore intended to inform search engines which is the original and which one is a duplicate. This can help you avoid penalties for duplicate content.

2. Why should you care about Canonical links?

This type of link was introduced jointly by Microsoft, Google and Yahoo in 2009, designed to help clean up link structure with duplicate content for search purposes.

Simply put, the HTML tag tells search engines which pages they should pay attention to in a group of similar content. The example I took below will give you a very useful look at this rel=”canonical” link tag

Failure to do so leaves your site vulnerable to lost traffic, SEO efforts, and search engine penalties that may be imposed on your site. What is canonical?

This is just a small example of why a webmaster might want multiple URLs that forward to the same content.

3. Why should you use Canonical links?

The main benefits of proper use of canonical links stem from directing traffic on URLs with similar content and improving the reliability of data gathered from your web analytics.

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While search engines give precise details on how their algorithms work, improperly classified duplicate content is thought to negatively impact the ranking assigned to a website and can potentially inciting a direct penalty if they believe you are intentionally misleading the crawler to attract more traffic.

Search engines do so to provide more satisfying results to their users and this helps them retain their users, therefore your taking advantage of the service they provide is subject to compliance. adhere to their principles.

Another reason to use is quality natural links. One of the ways Google determines the quality of a link is through the number of visits and click-through rate. So if your site doesn’t have a canonical link, the traffic will be split between separate URLs even though they’re technically the same site.

How does Canonical tag support SEO?

The canonical Canonical tag helps solve duplicate content issues by claiming a unique official URL, every Canonical-claimed copy of that official URL. It is possible to see many cases where it is almost mandatory to use the canonical tag such as:

https and httpwww and non wwwindex.php and homepageUse mobile version or AMP.1 version. Where to put the Canonical tag? What is canonical?

The syntax of the Canonical tag is also very simple compared to other tags, the place to put this tag is in, usually with the wordpress source code, you can use the Yoast SEO plugin to generate the canonical tag automatically.

2. Canonical tag not working

The canonical tag is not a directive, so it can be ignored. Having conflicting URLs in the sitemap or in internal links can give mixed signals.

There are also cases like duplicating the article and not changing the canonical tag to a unique URL. You should also use absolute — not relative — URLs in canonical to help avoid errors.

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The canonical tags are self-defined and can cause multiple pages to present to search engines as the preferred version. If a website has many different canonical tags on the same displayed content, Google will ignore both.

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What will Google do if there are messy signs like the one mentioned above? They will try to identify various signals such as canonical tags, internal links or sitemaps, and a few other factors. For example, they might try choose a shorter path over a longer one, or choose HTTPS instead of HTTP.

Google favors HTTPS pages over similar HTTP sites if they have duplicate content, unless there are conflicting signals such as the following:

HTTPS page with invalid SSL certificate.HTTPS page contains insecure dependencies.HTTPS page is blocked from crawling.HTTPS page redirects users to or through HTTP site.HTTPS page has rel=”canonical” link to the HTTP page. The HTTPS page contains a noindex.3 robots meta tag. What is the interaction of other tags and canonical?

A canonical tag can easily go wrong for something as small as a spelling mistake or slash, especially in a set like page numbering or hreflang.

In these sets, having a different page indexed and not the page contained in the tags will cause the set of pages to not merge as they should, as canonical setting on page 2 of a the path set of page 1.

The noindex and canonical tags should also be used together. I’ve seen cases when the canonical tag seemed to give the noindex tag the preferred version.

4. What are other uses of canonical tags?

Did you know canonical tags can be used with different domains? This is actually a popular practice when it comes to content control. You should also avoid duplicating secondary versions of your site, such as mobile or AMP versions. According to Google, you won’t need to change your canonical tags for the mobile-first index any time soon.

How to use canonical for effective SEO?

E-commerce websites, sales pages are the most prone to duplicate content. Because in the same product category there are many versions, different designs but the same type or the same name, features, only different in size, color, price or small symbol.

However, it is not only e-commerce sites, or sales pages that are “victims” of duplicate content. Currently, all websites are at risk. Therefore, the use of Canonical tags for websites is an extremely important job that every website needs.

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So what is the right standard in how to use Canonical tags?

There are many methods for you to optimize Canonical tags. However, not everyone knows and chooses the right way to use Canonical tags in SEO best for webiste. So, what are the rules for using Canonical tags?

Rule #1: Use absolute URLs

Google states that it is best not to use relative paths, you should leave your URL as an absolute link. That is, use rel=canonical when your path is already optimized.

The solution is that you should use the following structure:

Rule #2: Use lowercase URLs

Because Google can treat uppercase and lowercase URLs as two different URLs. Therefore, the best way for google to properly index the main link whose url is lowercase, you should use Canonical tags for lowercase Url.

Rule #3: Use the correct domain version (HTTPS vs. HTTP)

If your site has switched to SSL, make sure you properly declare to Google the HTTPS-redirected links in the rel=canonica tags. Because if you mistakenly declare the old URL as HTTP, it may lead to confusion and change website rankings.

You can use the canonical tag with the following syntax: what is canonical

If your website has not yet switched from HTTP to HTTPS, you can use rel=canonical with the following syntax: Rule 4: Each website should only use one Canonical tag

Do you think Canonical could use as much as possible to prevent duplicate content? In fact, if your website has a lot of rel=canonical tag declarations, Google will probably ignore all of those rel=canonical suggestions.

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You just need to do a good job of optimizing title tags, descriptions for each content to publish.

What are canonical related searches?

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