Getting started with Theca
Updated on July 17, 2026

Theca turns your books and notes into a library that answers questions citing the exact page.
1. Open the app
Go to theca.noxdragon.com with your NoxDragon account.
2. Upload your first book
Click Upload and drag in one or more PDF, EPUB, or TXT files. Theca processes them in the background: it extracts text, detects cover, author, and pages, and gets them ready to search.
3. Ask your library
Use the search bar to ask in your own words. Theca searches by meaning and by exact term, and every answer links to the page it came from.
Everything you upload is yours alone: nobody else sees your library.