You can check this by downloading the "Views" CSV in the Report function.
▼Download CSV of manual view counts in Report function (Web Browser)
https://teachme.jp/8/manuals/12701648
If a Manual has been exported as a PDF, it will be displayed as "Export PDF" under "View Type" in the exported file.
For details on other items, please refer to the applicable manual.
Related: What items can be output with the Report function?
https://help.teachme.jp/hc/en-us/articles/900005510266