Select a Chrome HTML file that you know is actually a PDF ... any PDF you download shouldn't automatically open within Google Chrome when you click on the file within the web browser.

Open the Google Chrome browser on your computer and click ... Now, select the exported HTML file containing all the bookmarks. Once you do that, all the bookmarks will be imported to your Chrome ...

For such cases, Chrome lets you save tabs for easy opening next time you start it. Though there are ... that contains the saved session to an HTML file by using the “Export bookmarks” feature ...