Numerous users have already gotten accustomed to storing their documents in PDF format due to its security settings and compactness. Many of them also use USB flash drive for their most important files.
Therefore, besides a trustworthy antivirus for their Flash drive, they will also need an intuitive PDF reader that will not require any installation.
Just like regular PDF readers, portable ones can only be used for previewing the contents of the file, while editing will not be available.
These utilities will typically not require a lot of RAM resources, therefore they can be run on a wide range of Windows versions.
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