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Extensions 
Chrome
Web store 
DOC, DOCX, PPT File Viewer
This viewer is a tool that allows you to view DOC, DOCX, PPT, PPTX, XLS, XLSX directly in your Drive.
Local Image File Viewer
Next and previous buttons for viewing images in local file URLs to browse folders
Document File Viewer
View a DOCX, PPTX, XLSX, Spreadsheet file directly without leaving your browser. Read its content without server conversion.
In-Browser File Viewer
Allows users to view files like .docx, .pptx, .eps and more in-browser through Google Drive!
Graffle File Viewer and Converter
View a Graffle file without having OmniGraffle, Mac installed on the machine. Convert your Graffle files to SVG/Print(PDF) file.
Multiple Contact File Viewer Print
This app allows you to View and print multiple Windows Contact files, as well as convert Contact files to CSV format.