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Google Cloud Text-to-Speech: Node.js Client

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Cloud Text-to-Speech API client for Node.js

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:


Before you begin

  1. Select or create a Cloud Platform project.
  2. Enable billing for your project.
  3. Enable the Google Cloud Text-to-Speech API.
  4. Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install @google-cloud/text-to-speech

Using the client library

// Imports the Google Cloud client library
const textToSpeech = require('@google-cloud/text-to-speech');

// Import other required libraries
const fs = require('fs');
const util = require('util');
async function main() {
  // Creates a client
  const client = new textToSpeech.TextToSpeechClient();

  // The text to synthesize
  const text = 'Hello, world!';

  // Construct the request
  const request = {
    input: {text: text},
    // Select the language and SSML Voice Gender (optional)
    voice: {languageCode: 'en-US', ssmlGender: 'NEUTRAL'},
    // Select the type of audio encoding
    audioConfig: {audioEncoding: 'MP3'},

  // Performs the Text-to-Speech request
  const [response] = await client.synthesizeSpeech(request);
  // Write the binary audio content to a local file
  const writeFile = util.promisify(fs.writeFile);
  await writeFile('output.mp3', response.audioContent, 'binary');
  console.log('Audio content written to file: output.mp3');


Samples are in the samples/ directory. The samples' has instructions for running the samples.

Sample Source Code Try it
Audio Profile source code Open in Cloud Shell
List Voices source code Open in Cloud Shell
Quickstart source code Open in Cloud Shell
Synthesize source code Open in Cloud Shell

The Google Cloud Text-to-Speech Node.js Client API Reference documentation also contains samples.


This library follows Semantic Versioning.

This library is considered to be in alpha. This means it is still a work-in-progress and under active development. Any release is subject to backwards-incompatible changes at any time.

More Information: Google Cloud Platform Launch Stages


Contributions welcome! See the Contributing Guide.


Apache Version 2.0