Raw lists fail when you have 10,000 files. Use these tools to add a search layer.
Exclude common junk:
-intitle:"apache" -intitle:"nginx" -intitle:"IIS" -"WordPress" -"sites/all" -"cgi-bin" -"favorites.ico"
Humans are visual creatures. A grid of book covers allows you to recognize a book in a fraction of a second. A better index displays high-resolution cover thumbnails next to each entry. index of epub books better
Instead of raw search, use:
These are safer and much faster than hunting open indexes manually. Raw lists fail when you have 10,000 files
Pro tip: If you want to maintain your own better index of EPUBs locally, use Calibre with its content server or COPS (Calibre OPDS PHP Server) — then your own index of will be cleaner than most public ones.
Want me to run a live example search for a specific book title? Humans are visual creatures
To achieve the "better" status of searching inside the books, you need a desktop search engine like Recoll (Windows/Linux/macOS) or Elasticsearch for web use.