I really appreciate your effort. It is really important to test these and ensure that the web apps, reports, dashboards are more inclusive. Having said that, I don't know if there is any script that does this, but if you know any programming language like Python, you could write a script and parse the report layout file to this python script and get the relevant output.
The approach is, once you create your report, do the following...
1) Make a copy of your report PBIX file.
2) Rename the extension of the copy from '.pbix' to '.zip'.
3) Then, open the zip (compressed file).
4) It will have a folder named "Report"
5) If you open the folder, there will be a file named "layout".
6) If you open this file using any text editor or code editor like VS code, you will be able to see all the report details like sheets, visuals, and all the properties of the visuals in your report. It looks like a ".json" file, but I am not sure.
At this level, you have all the details about your report, visuals, properties of visuals like font sizes, colors, etc... Though it is in human-readable form, it is not comprehensible or not very easy to find the properties. So it is better to write a script in Python or if possible import it into another Power BI Desktop file, do some transformations and try to make sense of it.
Disclaimer: I don't know if there is a better way. But if you don't know about any other option, you could approach it this way.
@Greg_Deckler
