txtCaster
Turn PDF and EPUB chapters into audio, follow the text, and ask questions about what you read.
A cloud audio-study platform in development for web, mobile and desktop. Windows and Linux desktop apps come first.
Desktop preview from September and October 2026, matched to your website theme. Not a live session.
HOW IT WORKS
Open a PDF or EPUB and choose the chapters or pages you want. Then pick how it is read: Narrator reads the text as written, Teacher explains it as a lesson. While you listen, each word lights up as it is spoken. Try it yourself: pick a book from the shelf.
Audio could not be played. Try again or read the transcript.
Read the transcriptChoose chapters or pages and review the estimated time. Narrator reads the text; Teacher adapts it into a lesson.
Review progress, pause and resume, or queue chapters overnight. Finished casts are MP3 files with chapter markers.
Ask a question and check the passage cited in the answer. Conversations require an internet connection.
Development interfaces using simulated data, captured in September and October 2026.
We ran this short document through txtCaster’s actual import, scripting and audio pipelines. Listen to both results.
Where does the energy go?
A cup of tea cools because energy moves from the warm tea into the cooler air. The energy has not disappeared. It has crossed a boundary. Choose the cup as your system, and you can follow where that energy goes.
Genuine application-component outputs. This is not a desktop-session recording or a conversion-speed benchmark.
Hear the source in its own words.
Where does the energy go? A cup of tea cools because energy moves from the warm tea into the cooler air. The energy has not disappeared. It has crossed a boundary. Choose the cup as your system, and you can follow where that energy goes.
Hear the passage re-explained as a lesson.
So, where does all that energy actually go? Think about a simple example, like a cup of tea cooling down. The reason it cools is because energy is moving from the warm tea into the cooler air around it. It's really important to understand that this energy hasn't vanished; it has simply crossed a boundary. If we decide that the cup of tea is our 'system,' we can then track exactly where that energy goes.
Figures recorded from individual runs while building txtCaster.
Historical records from August to September 2026. Individual development runs, not performance guarantees.
CAPABILITIES
Open a PDF or EPUB and choose chapters or a page range.
Hear the text as written, or adapted into a lesson.
Each word lights up on the reading surface as it is spoken.
Ask a question and check the cited passage. Requires an internet connection.
Finished casts are MP3 files with chapter markers. Queue long books overnight.
A companion phone player receives finished audio over your local network.
AVAILABILITY
The documented desktop build supports Windows and Linux. A companion phone player receives finished audio over your local network.
With installed local models, Desktop Offline processes documents on your computer without uploading them. Model downloads, updates and selected remote features have separate network requirements.
The web app, cloud library, cross-device place keeping, mobile accounts and macOS support are planned. Animated explanations are also in development.
The first public release is being prepared. There is no public download yet.
For questions, partnerships and programmes, contact Torkiv directly.