Free Text to Speech API
for Developers

import os
import requests

# Generate speech
response = requests.post(
    "https://freetts.org/api/v1/tts",
    headers={"x-api-key": os.environ["FREETTS_API_KEY"]},
    json={
        "text": "Hello from FreeTTS API",
        "voice": "en-US-JennyNeural",
        "rate": "+0%",
        "pitch": "+0Hz",
    },
)
file_id = response.json()["file_id"]

# Download the MP3
audio = requests.get(f"https://freetts.org/api/audio/{file_id}")
with open("speech.mp3", "wb") as f:
    f.write(audio.content)

print(f"Done. Saved as speech.mp3")

// Generate speech (keep the key server-side — never ship it to a browser)
const res = await fetch('https://freetts.org/api/v1/tts', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-api-key': process.env.FREETTS_API_KEY
  },
  body: JSON.stringify({
    text: 'Hello from FreeTTS API',
    voice: 'en-US-JennyNeural',
    rate: '+0%',
    pitch: '+0Hz'
  })
});
const { file_id } = await res.json();

// Download MP3
const audio = await fetch(`https://freetts.org/api/audio/${file_id}`);
const blob = await audio.blob();
const url = URL.createObjectURL(blob);

// Play it
new Audio(url).play();

const https = require('https');
const fs = require('fs');

function tts(text, voice = 'en-US-JennyNeural') {
  return new Promise((resolve, reject) => {
    const body = JSON.stringify({ text, voice, rate: '+0%', pitch: '+0Hz' });
    const req = https.request({
      hostname: 'freetts.org',
      path: '/api/v1/tts',
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Content-Length': Buffer.byteLength(body),
        'x-api-key': process.env.FREETTS_API_KEY
      }
    }, res => {
      let data = '';
      res.on('data', chunk => data += chunk);
      res.on('end', () => resolve(JSON.parse(data).file_id));
    });
    req.on('error', reject);
    req.write(body);
    req.end();
  });
}

tts('Hello from Node.js').then(id => {
  https.get(`https://freetts.org/api/audio/${id}`, res => {
    res.pipe(fs.createWriteStream('speech.mp3'));
  });
});