Similar Page Checker
Google and other search engines frown on duplicate content. A high chance is that you may find some similarities between your and another website's page. If you suspect that your content is being duplicated, you should run similar page checker tool available on searchenginereports.net.
Search engines have installed new filters to avoid duplicate content. Duplication of content has been a headache for content writers as well as webmasters. Many have been wrongfully penalized as their content were duplicated and spammed across sites.
Google looks for unique content, and if it comes across duplicate content, it will penalize the site suspected of copying content and might stop showing it in its display results. It is what Google Webmaster Guidelines say about similar or duplicate content.
"Google tries hard to index and show pages with distinct information....in the rare cases in which Google perceives that duplicate content may be shown with intent to manipulate our rankings and deceive our users, we'll also make appropriate adjustments in the indexing and ranking of the sites involved. As a result, the ranking of the site may suffer, or the site might be removed entirely from the Google index, in which case it will no longer appear in search results."
This is another scam that owners of original content must face. Scrappers take the original content and repackage it to make it look different. In fact, it's not it’s the same content with a new look. Some nefarious developers also launched packages that would take content and churn out 5-6 versions of it.
Article from legitimate sites does copy on other sites. For example breaking news content would be duplicated across several news sites. However, the search engines are capable of determining where the original content came from and won't penalize the site.
Therefore all webmasters and owners should stop posting duplicate or similar content on their websites. No one knows exactly after what percentage of duplication Google penalizes a site. But there must be some rule which only the 2000 plus PhDs employed by Google must know. But then again only a small percentage of them must be handing this particular metric in Google's ranking algorithm.
With so much content being written and posted across various websites it's not impossible to stop duplication. There are free sites that check plagiarism like duplichecker.com. If you are a web content writer, you must use a plagiarism checker tool before you post any content. If you are a website master or owner and are getting content by a third party; you must ensure that the content is original by performing a plagiarism test.
With millions of websites existing there are chances that duplication will occur and web pages will appear similar. Page similarity can occur across multiple sites or on your website. If your website is focused on a single subject, the chances of similarity occurring are high. You can check one page for plagiarism and then upload. Then check the next one. If there is any duplication with the first one, it will be trapped and displayed. Or you can check multiple pages using searchenginesreport.net similar page checker tool.
You enter your URL with a page address and in the second URL again enter your URL with the second-page address. By doing this two pages on your website will be compared.
Several SEO websites provide similar page checker tool in their toolkit. However, searchenginereports.net has an excellent page checker tool. All you need to do is open the site in your browser and scroll down the tools till you spot this tool. Click on it and enter both the URLs. It will run the test and display the results.
From the results, you can see if there are any similarities. Getting in touch with the webmaster of the other site and asking them to change their content will be virtually impossible and a waste of time. Therefore change the content on your website. Run the test again and ensure that similarities no longer exist.
Remember if your website contains similar content, it will negatively impact the credibility of your site and may ruin its ranking. Clean up your website first.
There are tools to check page authority as well as domain authority. Moz has developed page and domain authority scoring system. This tells you on a scale of 1 to 100 how well your page or domain score will rank on Search Engines Result Pages (SERP).
The more page authority the pages of your website rank, the better will be your domain's ranking. Most of the search engines especially Google gives a higher ranking to pages that are original, relevant to the topic and command authority. It’s the same as would you read books that contain similar content. Of course not you would see which one has got the best reviews and publications sold and read that.
It is what exactly Google will do when checking page authority. It will check which one has unique content and has the most traffic and links to it. It will rank this page higher than the others.
You want to post content on the internet on your website. Read the content on other sites that have similar interests. By doing this, you will know what the other writers have written and will willfully avoid copying them.
If you don't do this, the chances of your site having similar content increase. Research your topic well and then write on it. Being a student, then you must make sure that your thesis, essays, and other papers are original. They know they can be penalized and failed for copying any content.
Google and other websites follow similar rules, therefore, make it a habit of posting original content. You can do a website authority check and a domain authority lookup. Running these tests will ensure that you are scoring well and your site is visible to the search engines.