Type or paste text, then press Read aloud. Nothing is uploaded.
- Speech made on your deviceOpen-source voices in your browser
- 0 uploadsYour text never reaches a server
- Download WAVUse it in videos or slides
- No sign-upNo account needed
How to do it
Paste one chapter at a time. Each chapter becomes one WAV file, which keeps long projects manageable. Name files by chapter number when you download.
How it works
- Type, paste or open a .txt or .pdf file (text PDFs only).
- Choose one of 13 English voices and a speed.
- Press Read aloud. The first time, the voice model downloads once (about 90 MB) and is cached.
- Speech is generated on your device part by part and starts playing straight away. When it finishes, download the WAV file.
Tips for natural-sounding speech
| Problem | What to do |
|---|---|
| A name is mispronounced | Spell it the way it sounds, e.g. "Siobhan" as "Shiv-awn" |
| No pause where you want one | Add a full stop, or a blank line for a longer pause |
| Numbers read oddly | Write them in words: "twenty twenty-six", "three point five percent" |
| Abbreviations read letter by letter | Write the full words: "for example" instead of "e.g." |
| Sounds rushed | Lower the speed to 0.9 and use shorter sentences |
Honest limits
- English only, with American and British voices.
- Speed depends on your device. On a typical laptop, expect very roughly real-time speed or faster; phones are slower.
- The voices do not do emotions on command or sing.
- Output is WAV (about 2.9 MB per minute). Convert to MP3 in any audio editor if you need a smaller file.
Your text stays private
Most free text-to-speech sites send your text to a server. VoiceRuler generates the voice inside your browser, so your words never leave your device. The Kokoro model is released under the Apache-2.0 licence, which allows commercial use of the output.
Related guides
- Text to speech for YouTube voice-overs
- Text to speech for TikTok and Reels narration
- Free AI voice-over generator
- Listen to an ebook with text to speech
- Narrator voice text to speech
- Text to speech for presentations and slides
- Text to speech for a podcast intro
Frequently asked questions
How long can a chapter be?
Up to 100,000 characters, roughly 2 hours of audio. On a typical laptop, generation runs at very roughly real-time speed or faster; phones are slower.
Is VoiceRuler free?
Yes. There is no sign-up, no daily limit and no watermark, because the voice runs on your device.
Is my text uploaded?
No. Speech is generated in your browser. Only the model and voice files are downloaded.
Which languages are supported?
English only, in American and British voices.