Upload the file to a tool like ePubCheck to see the internal details without installing software. 2. Why the Strange Name? Filenames like "451508tvetsrllbrlnndl" usually come from:

Import the file into apps like Apple Books, Google Play Books, or Calibre . These apps automatically read the metadata and rename the entry to the correct book title.

Most ePub files contain (the title, author, and publisher info) inside the file itself, regardless of what the filename says. To see what "451508tvetsrllbrlnndl" actually is:

Digital libraries often use unique strings to track inventory.

Decoding the Mystery: How to Find and Open Your "451508tvetsrllbrlnndl" ePub