Starting with version 0.7.3, LANraragi can directly download URLs to its content folder. This allows you to seamlessly add archives from the Internet to your LRR instance for safekeeping.
By default, we will try to download any URL you chuck at us! This will mostly work for simple URLs that point directly to a file we support. (For example, something like this very nice Quake booklet: https://archive.org/download/quake-essays-sep-15-fin-4-graco-l-cl/QUAKE_essays_SEP15_FIN4_GRACoL_CL.pdf will download without a fuss.)
For non-direct links, you will need to have a matching Downloader Plugin configured. LANraragi currently ships with Downloaders handling E-H and Chaika links.
You can also install the Tsukihi Browser Extension to automatically verify/download URLs you browse to your server instance.