Once you install the app you can choose to use the open with option or set your  default PDF Reader to Snap&Read. Must be signed into Snap&Read Universal and have allowed access to the Google Drive.

This Google Drive App loads a PDF from your Google Drive straight into Snap&Read Chrome extension to use all of Snap&Read's reading and annotation tools.
https://chrome.google.com/webstore/detail/snapread-pdf-reader/djebdmfegcgaaiomgonohlbnjoglpjfh

For this to work, you will also need Snap&Read's Chrome extension that is available here... https://chrome.google.com/webstore/detail/snapread-universal/mloajfnmjckfjbeeofcdaecbelnblden 

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