TTSbox
No signup Local processing Authorized voice cloning only WAV export Transcript export

Free Browser Text to Speech & Speech to Text

TTSBox lets you generate speech from text, transcribe audio into editable text, and use optional authorized voice cloning directly in your browser. No signup required. Your text, voice samples, and audio stay on your device in local mode after the model loads.

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Local Voice Model

Cached locally after first load

Sample voices are licensed test clips. To clone a real person's voice, only upload or record voices you own or have permission to use.

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Quick facts

TTSBox at a Glance

Price
Free
Signup
Not required
Processing
Runs locally in supported browsers
Main tools
Text to Speech, Speech to Text
Voice cloning
Optional, authorized voices only
Output
WAV audio, editable transcripts
Recommended browser
Desktop Chrome or Edge
First use
Model download required

Workflow

Choose Your Voice Workflow

TTSBox offers two browser-based AI tools. Pick the direction that fits your task.

Text to Speech

Convert written text into spoken audio. Choose from built-in voices or use an authorized voice sample as your voice source. Download the result as a WAV file.

Generate voice from text

Speech to Text

Upload an audio file or record speech directly in your browser, then transcribe it into editable text. Copy the transcript or download it as a text file.

Try speech to text

Voice cloning is available as an optional voice source inside the Text to Speech workflow. Learn about voice cloning for text to speech.

Approach

Why Browser-Based AI Voice Tools?

Privacy

Data stays on your device

Your voice, text, and audio are not uploaded to any server in local mode.

View details
  • No server upload of your voice, text, or audio.
  • Ideal for private drafts and secure local testing.
  • No account signup or API keys required.
  • Browser cache stores the model for faster future visits.

Note: AI model files need to download on first use, which requires an internet connection.

Cost

Free with no signup

No subscriptions, API charges, or account creation.

View details
  • Completely free — no subscriptions or API charges.
  • No account needed. Open the page and start using the tools.
  • No API keys or developer tokens required.
  • AI models run locally, so there are no server-side processing costs.
Technology

WebGPU and WebAssembly inference

Modern browser APIs power local AI voice processing.

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  • Text to speech uses WebGPU for GPU-accelerated audio generation.
  • Speech to text uses WebAssembly for broad browser compatibility.
  • Models are cached in IndexedDB after the first download.
  • Desktop Chrome or Edge is recommended for the best experience.
Transparency

Open about capabilities and limits

Honest documentation of what the tools can and cannot do.

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  • Model sizes and hardware requirements are documented upfront.
  • Voice cloning requires a desktop GPU and is not supported on all browsers.
  • Output quality depends on your hardware and voice sample.
  • These are experimental tools, not professional production replacements.

Use Cases

Common Use Cases

Use TTSBox when you need quick browser-based audio generation or transcription without creating an account.

  • Create narration drafts for videos, courses, or product demos.
  • Test different voice styles before using a production voice service.
  • Transcribe personal notes, interviews, meetings, or podcast drafts.
  • Compare local browser processing with cloud-based voice tools.
  • Experiment with authorized voice cloning without creating an account.

Comparison

TTSBox vs Cloud Voice Tools

Feature TTSBox (Browser) Cloud Services
Privacy Data stays on device in local mode Uploaded to server
Processing Uses your local browser and device hardware Uses remote servers
Cost Free Subscriptions / API costs
Signup None Often required
Limited offline use Works locally after required model files are downloaded and cached; first use requires internet Requires internet

Read more in our Local vs Cloud Voice Cloning guide.

Safety

Responsible Voice Generation and Transcription

Allowed

What TTSBox is designed for

Appropriate uses for browser AI voice tools.

View details
  • Cloning your own voice or voices you have explicit permission to use.
  • Using licensed synthetic or sample voices.
  • Private narration drafts, accessibility experiments, and voice prototyping.
  • Transcribing your own meeting notes, interviews, and recordings.
Prohibited

What TTSBox is not for

Strict boundaries on authorized voice cloning and use.

View details
  • Impersonation, fraud, scams, or phishing.
  • Political deception or non-consensual voice cloning.
  • Harassment or creating deceptive media.
  • Commercial use without proper voice licensing and rights clearance.

Commercial use depends on your rights to the text, voice source, and generated audio. Read the Safety Policy.

FAQ

Frequently asked questions

What is TTSBox?
TTSBox is a free browser-based platform with AI voice tools for generating speech from text and transcribing audio into text. Voice cloning is available as an optional voice source inside the text-to-speech workflow. All processing runs locally in your browser after the initial model download.
What AI voice tools does TTSBox include?
TTSBox includes two main tools: Text to Speech for generating voice audio from written text, and Speech to Text for transcribing audio files or recordings into editable text. Voice cloning is an option within Text to Speech, not a separate tool.
Is TTSBox free?
Yes. TTSBox is completely free with no subscriptions, API charges, or signup required. AI models run locally in your browser, so there are no server-side processing costs. Models are downloaded on first use and cached for future visits.
Does TTSBox upload my voice or audio?
In local mode, TTSBox does not upload your voice sample, text, generated audio, or transcribed audio to any server. AI models run directly in your browser. Note that model files need to download on first use, which requires an internet connection.
What is the difference between text to speech and speech to text?
Text to speech converts written text into spoken audio. Speech to text does the opposite: it converts spoken audio into written text. TTSBox offers both tools in one interface. Text to speech also includes an optional voice cloning feature for custom voice sources.
Can I use voice cloning in TTSBox?
Yes. Voice cloning is an optional voice source within the text-to-speech workflow. You can provide an authorized voice sample to generate speech that matches a specific voice. Only clone voices you own or have explicit permission to use. Built-in sample voices are available without any voice sample.

Explore

Explore Tools

Text to Speech

Generate voice from text with built-in voices or authorized voice cloning.

Generate voice from text →

Speech to Text

Upload or record audio and transcribe it into editable text.

Try speech to text →

Voice Cloning

Learn how voice cloning works as a voice source for text to speech.

Learn about voice cloning for text to speech →

Privacy

How TTSBox handles your voice data, text, and audio.

Read privacy details →

Safety Policy

Guidelines for responsible AI voice generation and transcription.

Review responsible AI voice use →

Model Licenses

Licensing information for the AI models used in TTSBox.

View model licenses →

Trust

About TTSBox

TTSBox is built as a browser-first AI audio toolkit focused on privacy, local processing, and responsible voice use. TTSBox is designed for users who want to test text-to-speech, speech-to-text, and authorized voice cloning without sending private voice samples or drafts to a cloud API. The project documents its model behavior, browser requirements, safety policy, privacy handling, and model licenses so users can understand how the tools work before uploading or recording audio.

Read privacy details Review responsible AI voice use View model licenses

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