Clipbox+

Clipbox+ is a versatile document viewer and file manager extension for Chrome that lets you quickly view PDFs, images, and text with a clean, intuitive design.

Key features include password protection and private browsing with biometric options, bookmarks/history, Dropbox integration, automatic thumbnail creation, ZIP/RAR decompression, and flexible file sorting. It also supports copying from and exporting to the camera roll, and provides pinch-to-zoom in the viewer for easy reading.