Text to Speech Reader | Free Online TTS Tool – Unlimited & No Sign-up

What is the Text to Speech Reader?

This tool uses your browser's built-in speech synthesis (TTS: Text-to-Speech) engine to read text aloud in real time. Since text is processed locally and never sent to any server, you can safely use it with confidential documents and personal information.

Choose from multiple languages and voices, adjust speed and pitch freely, and watch the current reading position highlighted in real time.

Use Cases

How to Use

1. Enter text — Type directly, paste, or drag & drop a .txt file. Try preset samples.
2. Select a voice — Filter by language and choose your preferred voice.
3. Adjust speed & pitch — Use sliders for reading speed (0.5x–3x) and pitch.
4. Press ▶ Play — Or press Space. The current reading position is highlighted.

Frequently Asked Questions

Which browsers are supported?

Google Chrome, Microsoft Edge, and Safari. Available voices depend on your browser and operating system.

Is there a character limit?

No. Since no data is sent to servers, there are no character or usage limits.

Can I download the audio?

This tool uses the Web Speech API, which doesn't support audio file export. Use your OS's built-in screen recording for that.

The speech stops midway through long text

This tool automatically splits text into chunks for continuous playback. If issues persist, try shorter text segments.

Is my text stored on your server?

No. Text is never sent to any server. Auto-save uses only your browser's local storage.

Does it work on mobile?

Yes. The tool is fully responsive. Some mobile browsers may have fewer voice options.

Text-to-Speech Glossary

TTS (Text-to-Speech)

A technology that converts written text into spoken audio. Computers analyze text structure and generate artificial speech. Widely used in screen readers, navigation systems, virtual assistants, and accessibility tools.

Speech Synthesis

The process of artificially generating human speech from text or linguistic data. Approaches include rule-based, concatenative, statistical parametric, and neural network methods (e.g., WaveNet, Tacotron). Modern deep learning models produce remarkably natural-sounding speech.

Web Speech API

A W3C browser standard JavaScript API providing two features: Speech Recognition (voice-to-text) and Speech Synthesis (text-to-voice). This tool uses the SpeechSynthesis interface to read text aloud directly in your browser.

SpeechSynthesisUtterance

A JavaScript object representing a speech request in the Web Speech API. It contains the text to speak plus parameters like voice, rate (speed), pitch, and volume.

Pitch

The fundamental frequency (F0) of speech, perceived as highness or lowness of voice. In the Web Speech API, pitch ranges from 0.0 to 2.0, with 1.0 as the default. Higher values produce a higher voice, lower values a deeper voice.

Rate (Speech Speed)

Controls how fast the synthesized speech is delivered. 1.0 is the normal speed. The Web Speech API supports 0.1–10.0, though this tool limits the range to 0.5x–3.0x for practical use.

SSML (Speech Synthesis Markup Language)

An XML-based markup language for controlling speech synthesis output. Standardized by W3C, it supports pronunciation hints, pauses, emphasis, and prosody adjustments. Primarily used with cloud-based TTS services like Google Cloud TTS and Amazon Polly.

Prosody

The rhythm, intonation, and stress patterns of speech. Natural-sounding TTS requires accurate prosody generation — such as rising intonation for questions and emphasis for exclamations.

Chunking

The technique of splitting long text into smaller fragments for sequential playback. Browser speech engines may stall on very long texts, so this tool automatically splits text at sentence boundaries (≤ 200 characters per chunk) and plays them consecutively.

localStorage

A browser-side data storage mechanism that persists data without sending it to a server. This tool uses localStorage to auto-save your text and settings between sessions.

How the Web Speech API Works

The Web Speech API is a browser-native standard that provides JavaScript access to the operating system's speech synthesis engine. Chrome uses Google voices, Safari uses Apple voices, and Edge uses Microsoft voices — so available voices and quality vary by browser and OS.

Processing Flow

1. Text Input — User enters text or imports a .txt file
2. Chunking — Text is split at sentence boundaries into ≤ 200-character chunks
3. Utterance Creation — Each chunk becomes a SpeechSynthesisUtterance with the selected voice, rate, and pitch
4. Sequential Playback — Chunks play in order; each chunk’s onend event triggers the next
5. Highlight Sync — The current chunk is highlighted in the text area via an overlay layer

Browser Compatibility

Browser TTS vs. Server-Based TTS