Various RAR Extractors are available on app stores for opening these files on tablets or smartphones. Safety and Content Warning

A RAR file is a proprietary archive format used for data compression and file grouping. It is often used to bundle multiple related items—such as datasheets, PCB schematics, and driver software—into a single, smaller package for easier distribution. How to Access the Contents

Compressed files can hide malicious software that only becomes active once extracted.