There are some files onsite that may need an app to handle. If you already have it covered, outstanding! If you don't, or you just want to explore another solution, here are some choices.
Portable Document Format
format is used to present documents in a manner independent of application software, hardware, and operating systems.
ZIP is short for PKZIP
is a file archive format that supports lossless data compression. A
file may contain one or more files or directories that may have been compressed.