
Open the file and it will now require a password to open. Once the file is encrypted, it will be automatically saved as a separate file in your Google Drive directory.

If you can’t see the sidebar, just click the ‘Open side panel’ button at the bottom-right corner.

If you’re primarily dealing with PDFs then you shouldn’t worry about losing the native file format. The only downside is that the PDF toolbox needs to convert native Google documents such as Google Docs, Sheets, and Google Slides to PDF before encryption.

Besides encryption, one can add restrictions for printing and commenting to a PDF.

You can simply protect your documents from within Google Drive’s interface. Thanks to PDF Toolbox, now you won’t have to first download a file to your computer in order to encrypt or decrypt it with a dedicated program. The app also lets you decrypt or remove passwords from PDF using Google Drive. PDF Toolbox is an addon for Google Drive that allows users to add password protection to PDFs and Google documents. Thankfully, Amit Agarwal, a Google Developer Expert has created “PDF toolbox” to get over this certain limitation. Users neither have the option to password protect a Google Drive folder. Google Drive doesn’t offer native functionality to password protect files and documents including PDF files, Google Docs, and spreadsheets.
