What is Duplicate Content Checker and Duplicate Content Filter – How Does it Function.

Duplicate content checker measures the extent to which the original article has been altered. It consistently evaluates the effectiveness of article re-writing efforts. Duplicate content checker compares two pieces of content and determines the uniqueness by using a search engine friendly algorithm. Google and other search engines determine the duplicated content in parts or phases of varying lengths. This type of checker compares the words and phrases in the original article along with those in the re-written version to evaluate the uniqueness of the article or assess the extent to which the article has been changed.


Some of the features include comparing two articles in .txt format from the hard drive and then display its uniqueness up to two decimal places. The indicator feature shows whether the new re-written text is different enough to be published on the web or in article directories based on the settings of the user. It also displays the word count for each text while including the option of entering a keyword / key phrase and display keyword density for each piece of text. The tool has the ability to edit and save the modified text directly and at the same time allows the users to compare, edit and compare again without leaving the program. It can easily run on desktops and also identifies which portion of the text requires modification. The tool evaluates the percentage of uniqueness based on words and phrases, calculates word counts and keyword density while saving the user time by helping them to re-write the most effective piece.


Duplicate content is a burning topic nowadays while duplicate filters have been implemented by search engines to reveal the similarity of content and ways to circumvent the problem. Also duplicate filter determines whether the pages having duplicate content can be debarred from indexing by search engines. Many times poor quality web pages that are exact replicas of other pages have been created to receive better search engine results. In order to make searches more relevant to the user, search engines use a filter that removes duplicate content pages. Basically search engine filters various types of duplicate content :

01)      Websites having identical pages – Such pages are considered duplicate along with websites that are identical in appearance to another website. Even affiliate sites containing identical content are vulnerable to duplicate content filter. Websites with “doorway pages” also undergo the filtering process.

02)      Scraped content also undergoes the filtering process as the content in such websites is northing more than a duplicate page. Scraping is becoming a problem with search engines as the popularity of blogs and its syndication is on the rise.

03)      “Article distribution” is another method of distributing duplicate content in search engines.


Basically search engine robot “crawls” a website, reads the pages and stores the information in its database. Later the stored information is compared with the updated information. Depending on the over-all relevancy score of the website, it determines those pages having duplicate content and then filters out the pages of websites which are considered spam. By using duplicate content filter and checker, duplicate content can be eliminated thereby helping in the creation of a website that is fresh and original.

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