QA Analytics saves the HTML of the page and builds a heatmap from it.

For example, suppose you update a part of an article, such as a text or an image.
This will change the content of the same URL.
This means that “the version of the page has changed.”

In “Heatmap Manager“, you can switch the page version.
When you update the content of a page, press the “Switch” icon on the appropriate page line. The new HTML will be saved and the data will be recorded. (It takes about a day for the new page version data to be reflected.)

Page versions are also useful when you want to use heatmaps to change the content of an article and see how it is read before and after the update.
To see how to use it:
– Heatmap Application Know-how (QuarkA official website)

* Please note
QA Analytics does not store anything other than HTML. (Examples of non-HTML: CSS, JS, images, etc.)
This is because it is very difficult to deal with the complexity of the file structure, which varies from site to site. In terms of data size, it is also judged that it is proper not be saved.
Therefore, when we build heatmaps for past page versions, we refer to existing files (CSS, images, etc.) from code written in past HTML.
Therefore, when there is no longer anything to refer to, it will affect the heatmap construction.
For a more accurate heatmap of past page versions, when you change CSS, etc., it is recommended that you keep the past version by adding new classes or so.