Nice work, you've installed the PDF Reader Extension.
Open from Google Drive
Open a PDF from Google Drive and use all the features from the TextHelp PDF Reader.
Install PDF Reader App
Why not add our PDF Reader App, this allows you to open PDF documents with the Texthelp PDF Reader using the 'Open with' directly within Google Drive.
Additional Options
A few steps to setup your experience with
Texthelp PDF Reader.
(Please ensure you are using the latest version of the extension)