One reading network, many entry points

File tools open one free, no-login on-device workspace with no AI Explain. Signed-in CastReader AI and Pro voices are a separate compute layer.

Free text to speech

Paste text and listen with browser voices.

PDF reader

Render pages locally with a synchronized text layer.

Open tool →Also works with pasted text

EPUB reader

Open DRM-free books with a hardened local parser.

Open tool →Also works with pasted text

Word and document reader

Read DOCX, TXT, Markdown and HTML locally.

Open tool →Also works with pasted text

CastReader AI explanation

Sign in for 3 free Explains per day. This is never available in on-device mode.

Open tool →Also works with pasted text

Voice library

Compare voices by language. Pro catalog voices require an active Pro plan.

Open tool →Also works with pasted text

Private voice clone

Pro only: create, manage and use an account-bound cloned voice.

Open tool →See voice-cloning use cases Also works with pasted text

Webpage reader

Use the extension for Kindle, articles, email and AI chats.

Open tool →Also works with pasted text

Read a local file aloud

Drop a file here for free, no-account on-device reading. Sign in only if you choose CastReader AI; Pro unlocks Pro and cloned voices.

Choose a file

PDF · EPUB · DOCX · TXT · Markdown · HTML

The original file never leaves this device

Parsing and rendering are local. On-device mode sends no text and has no Explain. If you choose AI, only the spoken paragraph or text you explicitly ask to Explain is sent; the original file is never uploaded.