URL Parameters

URL parameters are additional query strings that follow the main URL for a page, typically contained after a question mark. Multiple query string parameters can be used within a single URL, which can impact a website’s SEO and organic search performance in several ways, including causing duplicate content and crawling issues.  
This collection of SEO Office Hours notes addresses common problems seen with URL parameter handling, with recommendations on how to fix these issues with best practices suggested by Google Search Central.

The URL parameter tool does not prevent pages from being crawled

October 30, 2021 Source

John explained that any URLs set to be ignored within the URL Parameter tool may still be crawled, albeit at a much slower rate. Parameter rules set in the tool can also help Google to make decisions on which canonical tags should be followed.



Blocking Crawling of Parametered URLs in GSC Will Mean PageRank Will be Lost

January 22, 2020 Source

Google sees links between two canonical URLs and if there is no canonical destination URL then it will be seen as going nowhere and won’t be used. Practically this isn’t an issue as links aren’t usually to a specific parameter variation, so it is unlikely to be driving a lot of the site’s PageRank.

Having Canonical Tags Set For Parameter URLs Helps Google Understand Connections Between Pages

November 1, 2019 Source

Google tries to figure out the canonical URL for parameter pages that are included in the GSC parameter handling tool, so they may crawl these pages to identify and understand the canonical set up and connection.

Google May Crawl Parameter URLs Set to Crawl: None in the Parameter Handling Tool in GSC

November 1, 2019 Source

Google may still crawl parameter URLs, even if you set the parameter to crawl: none in GSC. If you want to ensure the URLs never get crawled John recommends using the robots.txt file instead.

Google Will Read the URL String Contained After the Query Parameter

July 12, 2019 Source

If you are using a ? query parameter, Google will read the remaining URL string and it is not something which blocks crawling or indexing. However, they will drop anything following a # parameter.

The URL Parameter Tool in GSC is Still Effective

May 17, 2019 Source

Despite not currently being moved over to the new Search Console, the URL parameter tool is still effective to manage parameter crawling.

Replace Unnecessary URL Parameters with Fragment Identifiers

March 19, 2019 Source

John recommends replacing unnecessary URL parameters with fragment identifiers because anything after the # is usually dropped for indexing, whereas parameter URLs can be indexed separately.

Use gl or hl Parameters in Google Search URLs to See Rankings for Different Countries

February 22, 2019 Source

You can use gl= or hl= parameters or use the advanced settings in Google to see rankings for different countries and languages. This doesn’t work for local results as there isn’t a parameter for this.

Internally Linked Parameter URLs Might be Indexed Even if Canonical Points to Clean Version

February 19, 2019 Source

When using parameter URLs for internal linking, it isn’t always guaranteed that the clean version of the URL be indexed if there is a canonical tag to this version. This is because Google has to weigh up which URL should be shown in search.

Related Topics

HTTPS Site Architecture URL Architecture Subdomains Canonical Domain Facets / Faceted Navigation TLDs Site/Page Quality