OfflineTTS
Free, private AI audio tools in your browser
OfflineTTS is a private AI audio toolkit that runs entirely in your browser. It provides text-to-speech, speech-to-text, subtitle generation, and ebook-to-audio workflows without requiring signup or API keys.
The platform solves the problem of relying on cloud-based audio services that may compromise privacy or require subscriptions. It is designed for users who need free, local processing for voice generation, transcription, captions, and document listening.
OfflineTTS is ideal for content creators, accessibility advocates, students, researchers, and anyone who values privacy while working with audio and text.
Key Features
4 Local TTS Engines
Choose from Kokoro (54 voices, 9 languages), Kitten (8 voices, lightweight), Piper (26 voices, CPU-friendly), or Supertonic (5 languages, style presets) for browser-based voice generation.
Whisper STT with 99 Languages
Transcribe audio or video to text with word timestamps, supporting 99 languages. Exports include TXT, SRT, and VTT formats.
Subtitle Generator
Generate SRT and VTT subtitle files for creator media, reviews, and accessibility workflows. Built for Shorts and Reels.
