Google: URLs are case sensitive.

Google’s John Mرller explained that URL cases are sensitive, so it doesn’t matter if the characters are uppercase or lowercase.

Variations in cases can make one URL different from another, as the previous slash URL is different from the one without the slash.

This topic has been addressed in the latest episode of Ask Google Boot Central YouTube Channel.

One question that arises is whether the issue of characters in the URL can affect a website’s ranking.

Mueller also answers the question of which version of the URL Google chooses to display in search results.


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Do letter issues in URLs affect SEO?

The characters in the URL are very important to Google.

Two URLs may look alike, and may even lead to the same content, but they can be treated as different URLs if one has a capital letter and the other does not.

M مولller says:

“By definition, URL cases are sensitive, and last but not least, things like slashes matter. So, technically, yes – these things matter. They make the URL different.”

When Google recognizes that there are multiple versions of the same URL, it will try to crawl them all and figure out which one to show in the search results.


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Although it is handled automatically, Mرller says it is not always ideal because it may take longer for Google to discover and index the content.

“If a website still shows the same content in these cases, search engines will try to find it on their own and it usually works well. But it’s not always ideal.

For example, search engines will try to crawl all variations of the URL. This can make it a bit slow for them to find other useful content on your site.

Google initiates a process called canonicalization when it finds several different versions of the URL.

It decides which URL to include in the SERPs, and to collect all signals from other versions in that URL.

The URL that appears in the search results is called the canonical URL.

“Also, when search engines find multiple separate URLs showing the same content, they have to decide which of them to include. We call this canonicalization.

It does not change the ranking, but our system can select URLs that you do not choose.

Characters in URLs can also play a role in robots.txt, M مولller explains.

Another place where the correct URL plays a role is robots.txt. In the robots.txt file you can indicate which parts of the website should not be crawled.

The robots.txt file also uses the exact URL, so if you have entries that refer to one version of the URL, they will not apply to another version of that URL. It is rare that we see this cause problems.


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You can tell Google which version of the URL you want to consistently link to that version in search results.

Using the rel = ”canonical” tag will also send Google indications as to which version of the URL you would like to display in the SERPs.

“Using internal linking to link to a permanent version clarifies your preference. Adding a link rel =” canonical “element also helps to validate it and help search engines focus on that version. Encourage

Therefore, the short, upper or lower case is important for the URL. It’s a good idea to adapt to how you use them, but it’s usually not that important for a website.


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Watch the full video below:

Featured Image: Screenshot from, September 2021.

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