How to fix canonical url error ?
SEO Help and Tips
What is canonical url ?
A canonical URL refers to the preferred or authoritative URL for a webpage when there are
multiple URLs that can lead to the same content. It is used to address the issue of duplicate
content, where the same or very similar content exists on different URLs within a website or
across multiple websites.
Search engines like Google and Bing consider duplicate content to be a problem because it
can affect the accuracy of search results and create confusion for users. By specifying a
canonical URL, website owners can indicate which version of the content should be treated
as the primary or original source.
The canonical URL is typically specified within the HTML code of a webpage using a
rel="canonical" link element. This element points to the preferred URL, indicating that it
should be indexed by search engines and that other versions or variations of the URL
should be considered as duplicates or alternative versions.
When search engines encounter a canonical URL, they consolidate the ranking signals and
relevancy factors associated with the duplicate URLs and attribute them to the canonical URL
. This helps search engines understand which version of the content to prioritize in search
results and avoids dilution of search engine rankings across multiple URLs.
Using canonical URLs is an important practice in search engine optimization (SEO) to ensure
that content is properly indexed and displayed in search results, while minimizing the risk of
duplicate content issues.
How to fix canonical url error ?
To fix canonical URL errors, you need to identify the source of the error and then take
appropriate steps to address it. Here are some common scenarios and their corresponding
solutions:
Missing or incorrect canonical tag:
If your webpages are missing the canonical tag or if the existing canonical tags are incorrect,
you should update them to point to the correct canonical URL. Ensure that the canonical URL
is the preferred version of the content and is consistent across all relevant pages.
Multiple versions of the same content:
If you have multiple URLs that lead to the same content (e.g., www.example.com/page1 and
example.com/page1), you need to set up 301 redirects to redirect all variations to the preferred
canonical URL. This helps consolidate the link equity and prevents duplicate content issues.
Parameters or session IDs causing duplicate content:
Some websites generate unique URLs for each user session or use parameters that create
multiple versions of the same content. To fix this, you can implement URL rewriting techniques
or use canonical tags to consolidate the variations into a single canonical URL.
Syndicated or duplicated content across different websites:
If your content is being syndicated or duplicated on other websites, you can use the
rel="canonical" tag to specify the original source URL. This helps search engines understand
the preferred version of the content and avoid penalizing your website for duplicate content.
Pagination or sorting pages:
If your website has paginated content or sorting options that create multiple URLs with similar
content, you can use the rel="canonical" tag to specify the main page as the canonical URL.
This consolidates the ranking signals and prevents dilution of search engine rankings.
Content management system (CMS) configuration issues:
In some cases, CMS settings or plugins may cause canonical URL errors. Review your CMS
configuration and ensure that it generates the correct canonical tags for your webpages.
Monitor your website regularly for canonical URL errors and perform regular audits to ensure
that your canonical tags are correctly implemented. Additionally, make use of tools like Google
Search Console to identify any potential issues and receive recommendations for fixing them.
Here's an example of how the canonical meta tag would look for a webpage with the URL
"https://www.example.com/blog/my-article" and "https://www.example.com/original-page-url"
<link rel="canonical" href="Your site address/original-page-url">
<link rel="canonical" href="Your site address/blog/my-article">
It's important to note that the canonical URL should be an absolute URL that includes the
protocol (http:// or https://) and the full domain name. Avoid using relative URLs or URLs that
omit the protocol (e.g., "//www.example.com/blog/my-article").
Remove canonical error use code below.
JAVA:
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
public class CanonicalRemovalExample {
public static void main(String[] args) {
String html = "<html>\n" +
"<head>\n" +
" <link rel=\"canonical\" href=\"https://source29.blogspot.com/preferred-url\">\n" +
"</head>\n" +
"<body>\n" +
" <h1>SEO Help and Tips</h1>\n" +
"</body>\n" +
"</html>";
Document document = Jsoup.parse(html);
Elements canonicalLinks = document.select("link[rel=canonical]");
if (!canonicalLinks.isEmpty()) {
Element canonicalLink = canonicalLinks.first();
canonicalLink.remove();
}
String modifiedHtml = document.html();
System.out.println(modifiedHtml);
}
}
CSS:
public class CanonicalRemovalExample {
public static void main(String[] args) {
String css = "body {\n" +
" /* some CSS properties */\n" +
"}\n" +
"/* other CSS rules */\n" +
"link[rel=\"canonical\"] {\n" +
" /* CSS properties for canonical link */\n" +
"}";
String modifiedCss = css.replaceAll("link\\[rel=\"canonical\"\\] \\{[\\s\\S]*?\\}", "");
System.out.println(modifiedCss);
}
}
Place the canonical meta tag within the <head> section of your HTML document, typically
before other meta tags or within the <head> section of your CMS or website template.
This helps search engines understand the preferred URL and consolidate the ranking signals
for that particular page.
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