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Read web pages and PDFs aloud with open source natural TTS voices (supertonic) - offline, private, and local OfflineTTS reads web pages, PDFs, and selected text aloud using high-quality AI voices — completely offline and private. No data ever leaves your browser. Features - 4 Natural AI Voices — Choose from Male 1, Male 2, Female 1, or Female 2 - Read Full Pages — Extract and read article text with one click - Read Selected Text — Highlight text, right-click, and select "Read with OfflineTTS" - PDF Support — Read PDF documents directly in your browser - Speed Control — Adjust playback from 0.5x to 2.0x - Pause & Resume — Stop anywhere and continue later - Keyboard Shortcuts — Alt+P (play/pause), Alt+O (stop), Alt+. (skip forward), Alt+, (skip back) Privacy First Everything runs locally on your device using ONNX Runtime. Your browsing data and text content are never sent to any server. Lightweight Runs entirely on CPU — no GPU required. Open Source OfflineTTS is free and open source under the Apache 2.0 license. View the source code and contribute at github.com/hkdb/offline-tts Credits Powered by Supertonic (github.com/supertone-inc/supertonic) for high-quality neural TTS voices. Early Development OfflineTTS is in active development (v0.1.0). Currently supports English (tested) and Korean (not-tested). Feedback and contributions welcome!
Dec 10, 2025
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