In some PDF viewer software, you can also edit PDF documents using tools like Insert (to add images, tables, charts, etc.), Text editor, Find and Replace text, etc. All types of standard but important tools like zoom in/out, page rotation, page navigation buttons, are also available. Modes and settings help you to modify the reading environment according to your requirements. In most software, you also get various modes and settings like reading mode, view mode, night mode, page settings, etc.

In these portable PDF viewer software, you can easily open and view PDF documents as well as documents of various formats like TXT, FDF, XDP, DOCX, PPTX, etc. Plus, you can easily carry portable PDF reader freeware in a flash drive, portable HDD, etc., and use them to view PDF files on the go. These software are almost similar to their standard counterparts, but portable version of PDF readers does not need installation to work, unlike standard software. Here is a list of best free portable PDF reader for Windows.

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