Identify duplicate content through the Visibility Index history - SISTRIX Login Free trialSISTRIX BlogFree ToolsAsk SISTRIXTutorialsWorkshopsAcademy Home / Ask SISTRIX / OnPage-Optimisation / Duplicate Content / Identify duplicate content through the Visibility Index history

Identify duplicate content through the Visibility Index history

From: SISTRIX Team 08.02.2021 Duplicate Content Can PDF-files of my HTML-pages lead to a Duplicate Content problem? Do quotes constitute a duplicate content problem? Identify duplicate content through the Visibility Index history Is Duplicate Content responsible for the strong fluctuations in the indexed pages of my website? Is the same content in different languages a duplicate content risk? Is there a duplicate content penalty? Back to overviewYes, a potential Duplicate Content problem can have a visible impact on the SISTRIX Visibility Index, as it can lead to a negative impact for a large part of the domain’s rankings.ContentsContentsExample of an external duplicate content problem visible within the Visibility IndexVideo Explanation by Matt Cutts GoogleAdditional information on this topic It is quite possible that the SISTRIX Visbilityindex will show the same ups and downs which can be seen within the number of indexed pages in case of a duplicate content problem.Also look at: Why does the amount of indexed pages fluctuate so much?

Example of an external duplicate content problem visible within the Visibility Index

If a Duplicate Content problem exists for a longer period of time and will therefore have a negative impact on the rankings of the affected website, it will look something like this in the SISTRIX Visibility Index: Visiblityindex history for the domain hertz.de with a visible Duplicate Content problemIn the Visibility Index history above, which comes from the domain hertz.de, we see a noticeable up and down within the red box, which cannot be explained through a Google algorithm change. Upon further investigation it became apparent that this pattern was also neither caused by a (failed) website relaunch or a Google-Penalty. Such a typical zig-zag-pattern in the SISTRIX Visibility Index is much more likely to point to a cross-domain Duplicate Content problem, which is also called external Duplicate Content. In the case of the car rental company Hertz, the country specific websites hertz.de and hertz.ch clashed in the German search market (google.de) which proved to be a Duplicate Content problem for Google. Visibility Index comparison of both Hertz country-domains in the German search marketYou can clearly see that a fall of the visibility of hertz.de on the German search market (google.de) always brought along a rise in the visibility of hertz.ch and the other way around. This becomes even clearer if you zoom in to the specific time frame: Zoom of the Visibility Index comparison for both domains in the German search marketGoogle apparently had difficulties assigning each domain to its rightful country and rotated between the content on hertz.de and hertz.ch in the rankings for the German search market (google.de). This had far-reaching consequences for the ranking of hertz.de in the German search market, as you can see in this ranking development: Ranking development of both hertz domains during the time of the Duplicate Content problemBased on the above ranking development, you can clearly see that Google happily interchanged content from hertz.de with that of hertz.ch. This game continued on for a while until Hertz finally solved the problem themselves. Hanns Kronenberg ran a fine analysis on the Duplicate Content problem of Hertz and showed why this is problematic. There are two reasons why this is problematic for Hertz. In the weeks with low visibility for hertz.de, the sum of the index values for both domains is much lower. This means that in these weeks results for Hertz were found at a much rarer rate in the search results. Secondly, the click through rate (CTR) for search results of hertz.ch in Germany should be much lower than for hertz.de.– Hanns Kronenberg, SISTRIX– Hanns Kronenberg, SISTRIX

Video Explanation by Matt Cutts Google

Additional information on this topic

Ask SISTRIX: How should I handle my online-shop’s multilingual content? From: SISTRIX Team 08.02.2021 Duplicate Content Can PDF-files of my HTML-pages lead to a Duplicate Content problem? Do quotes constitute a duplicate content problem? Identify duplicate content through the Visibility Index history Is Duplicate Content responsible for the strong fluctuations in the indexed pages of my website? Is the same content in different languages a duplicate content risk? Is there a duplicate content penalty? Back to overview German English Spanish Italian French