Multiple portable versions can be on the same machine using different folders thus different settings can be used.

There are two versions: Standard windows and portable version.

The program look and feel can be customized.

resize, move, close, minimize, maximize, etc.

Help: Visit web site, Manual, check updates, about.

Goto: page number, first page, last page, next page, previous page.

File will also list open documents allow selection.

File: Open, close, Save as, rename, properties, exit and depending on format other entries.

The content inside the headings depends on the format.

A drop down menu is consistent on the left side.

For PDF it tends to look like Adobe, while for ePub it shows two columns (based on view menu).

The display shows different structure based on the format.

Selection can also be made on the menu File. They can also be exited by tapping the X.

files names are listed and selected across the top of the display.

Multiple Files can be opened simultaneously even if they are different formats.The program is available as 64bit, 32bit and portable app.This feature requires the PDF interface option which treats every format as a fixed page PDF. This program can print documents, thus it can convert some formats to PDF as a print option.The program has a CLI with lots of options and a Menu interface for actual reading.

The PDF Reader also includes a plugin that can be installed during setup for viewing PDF documents in Firefox, Chrome, and Opera.

It is licensed under (A)GPLv3 license, with some code under BSD license.

Sumatra PDF is powerful, small, portable and starts up very fast.

Sumatra PDF supports PDF, eBook ( ePub, MOBI), FB2, XPS, DjVu), Help CHM, Comic Book ( CBZ and CBR) formats.

Sumatrapdf portable