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b.Bibliotaph
For game masters, on Windows and the web

Every RPG book you own. The exact page you need.

Bibliotaph turns the PDFs, e-books, maps and handouts scattered across your drives and cloud storage into one library you can search page by page. Prep takes minutes, not an evening of opening files.

  • No account needed on Windows
  • Your files never move
  • No ads, no tracking
The library: a grid of book covers with a search box, filters and the sidebar

The covers in this picture are public-domain books from the Internet Archive.

Reads your books right where they are

  • Windows folders
  • External drives
  • OneDrive
  • Google Drive
  • Dropbox
  • Box
  • WebDAV and Nextcloud
SOUND FAMILIAR?

A great library is only great if you can find things in it.

“I know that table is in one of these PDFs.”
Search the text of every page, scanned ones included, and open the book right at it.
“We just bought the bundle. Which of these do I already own?”
Check a download tells you before you copy anything: new, owned, or a newer version.
“Session starts in an hour, and the map is… somewhere.”
Gather the pages you need in a binder, with your notes, and step through them.
SEARCH

Search inside every page you own.

Words, quoted phrases and fields such as type:adventure level:3, across the text of every book, every e-book and every scanned page. Results show the books and the pages inside them, with your words highlighted, one click from the page itself.

  • Filters for game system, type, character level and players
  • A field guide under the search box with every value you have
  • Ask in plain English, with answers that cite the book and page
CATALOG

A catalog that fills itself in.

Game system, type, levels, players, setting and more, from file and folder names, the book's own details and its text, and from RPGGeek, Open Library and Google Books for a book that prints its ISBN. Switch on AI, running on your own PC or with your own key, and it reads each book and quotes the page it found every value on. Anything it can't quote, it throws away.

  • You check the exceptions, not every book
  • Your corrections always win, and survive a reread
  • Adventures inside a compilation found with their own pages
AT THE TABLE

Friday's session, in one binder.

Pull the pages you need from any book into a binder for the session, in order, with your notes beside them. At the table, step from the crypt map to the bog hag's stats to the abbot's letter without hunting through files.

  • A reader for PDFs and e-books, with page numbers that match the printed ones
  • Notes on any page, found again when a new printing arrives
  • Collections for a campaign, favorites and pins for what you use most
ONLINE LIBRARIES

The books you own online, beside your files.

Books on D&D Beyond and Demiplane join your library with a link to read them there. Purchases on Humble Bundle and DriveThruRPG are listed with where to download them, until the file is in your library. One click on your library page brings them in, with covers. Bibliotaph never sees your passwords.

HOW IT WORKS

Ready in three steps.

  1. 1

    Point it at your books

    Choose your folders, drives or cloud storage. Nothing is copied, moved or renamed.

  2. 2

    Let it read

    Bibliotaph reads every page, recognises scans, joins duplicate copies and fills in the catalog.

  3. 3

    Find anything

    Search, filter and open books at the right page, and build binders for the table.

TWO WAYS TO USE IT

On your PC, on the web, or both.

Windows app

FreeOpen source, no account

  • Works offline, with nothing sent anywhere
  • Built-in AI that runs on your own graphics card
  • Any folder, external drives and OneDrive's online-only files
  • Connects to your web library, so your work follows you
Download for Windows 10 and 11
BUILT TO BE TRUSTED

Your books, your rules.

Only ever read

Bibliotaph never moves, renames, edits or deletes a file, and knows each by its contents, so a moved book keeps everything.

Private by design

No ads, no tracking, nothing sold. The web version keeps your catalog, never a copy of your books.

AI is optional

Everything works without it. When it's on, it runs on your PC or with your own key, and it shows its sources.

Open source

Free software under the GNU GPL. Read the code, build it yourself, or follow along on GitHub.

QUESTIONS

Good to know.

Does Bibliotaph change my files?

Never. It only reads them, wherever they are. Your corrections, notes, collections and binders live in Bibliotaph's own catalog, which you can back up and export.

Which games does it work with?

Any. D&D, Pathfinder, Call of Cthulhu, indie zines, maps and handouts: if it's a PDF, an EPUB, a Kindle book or a picture, Bibliotaph reads it, ZIPs included.

Do I need AI?

No. Search, filters, binders and the catalog all work without it. AI fills in details faster, and on Windows it can run entirely on your own computer.

What does it cost?

The Windows app is free and open source. The web version is free while it's open by invitation.

Can it open protected PDFs?

A PDF with a password asks for it, and Bibliotaph respects a book's copy restrictions. It never guesses passwords or removes DRM.

Will my work follow me between computers?

Yes. Connect the Windows app to your web library, and your corrections, notes, collections and binders merge both ways, on every PC and browser you use.

Your next session is already in your library.

Bibliotaph finds it.