I made an archive for the sharty that doesn't suck
https://archived.st

Everything works as you would expect: full images, videos, formatting, etc. are preserved, and full-text search is available.
It uses the standard FoolFuuka interface, same as Desuarchive, etc.

Also, it is backed up by several TB of doubly-redundant, error-corrected disks. The archive is fully funded to remain operational until 2030, and likely after that.