OfflineTTS is Free
Every feature, every voice, every language — completely free. No subscriptions, no API keys, no usage limits, no hidden fees.
$0
always
Text to Speech
- ✅ 88 voices across 9 languages
- ✅ 3 engines: Kokoro, Kitten, Piper
- ✅ Unlimited generation
- ✅ WAV and MP3 export
- ✅ Works offline
- ✅ No API key needed
Speech to Text
- ✅ 99 languages supported
- ✅ Word-level timestamps
- ✅ 3 model sizes (Tiny/Base/Small)
- ✅ TXT, SRT, VTT export
- ✅ Streaming transcription
- ✅ Works offline
How Can It Be Free?
OfflineTTS runs AI models directly on your device using WebGPU or WebAssembly. There are no server costs for speech generation or transcription because your hardware does the work. The AI models are open-source (Kokoro: Apache 2.0, Piper: MIT, Whisper: MIT), so there are no licensing fees. We cover development costs through non-intrusive advertising.
What You'll Never Pay For
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No Subscriptions
No monthly or annual plans
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No Per-Character Fees
Generate unlimited speech
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No API Keys
Just open and use