On this page
Getting StartedExample 1: Basic Voice ConversionExample 2: Upload and Convert VoiceExample 3: Convert to a Specific VoiceList of VoicesConclusionRelated
Tutorials

Free, Unlimited Voice Changer API

Reynaldi Chernando
On this page
Getting StartedExample 1: Basic Voice ConversionExample 2: Upload and Convert VoiceExample 3: Convert to a Specific VoiceList of VoicesConclusionRelated

This tutorial demonstrates how to use Puter.js to convert and clone voices for free, without requiring API keys or dealing with usage restrictions. With Puter.js, you can access powerful voice changer capabilities powered by ElevenLabs' multilingual voice conversion model, perfect for content creation, voice dubbing, and entertainment applications.

Puter is the pioneer of the "User-Pays" model, enabling developers to integrate AI-powered voice conversion into their apps while users cover their own usage costs. This approach lets you offer professional-grade voice changing features without managing API keys or backend infrastructure.

Getting Started

No API keys or account registration needed to use Puter.js. Simply add this script tag to your HTML file in either the <head> or <body> section:

<script src="https://js.puter.com/v2/"></script>

That's all the setup required to start converting voices with Puter.js!

Example 1: Basic Voice Conversion

To convert a voice from an audio file, use the puter.ai.speech2speech() function. Here's a complete working example:

<html>
<body>
    <script src="https://js.puter.com/v2/"></script>
    <script>
        puter.ai.speech2speech('https://assets.puter.site/example.mp3')
            .then(audio => {
                document.body.appendChild(audio);
                audio.play();
            });
    </script>
</body>
</html>

Example 2: Upload and Convert Voice

Create an interactive interface that lets users upload audio files for instant voice conversion:

<html>
<body>
    <input type="file" id="audio-upload" accept="audio/*">
    <button id="convert-btn">Convert Voice</button>
    <div id="audio-output"></div>

    <script src="https://js.puter.com/v2/"></script>
    <script>
        document.getElementById('convert-btn').addEventListener('click', async () => {
            const fileInput = document.getElementById('audio-upload');
            const outputDiv = document.getElementById('audio-output');

            if (!fileInput.files[0]) {
                outputDiv.textContent = 'Please select an audio file first';
                return;
Show 16 more lines... 
<html>
<body>
    <input type="file" id="audio-upload" accept="audio/*">
    <button id="convert-btn">Convert Voice</button>
    <div id="audio-output"></div>

    <script src="https://js.puter.com/v2/"></script>
    <script>
        document.getElementById('convert-btn').addEventListener('click', async () => {
            const fileInput = document.getElementById('audio-upload');
            const outputDiv = document.getElementById('audio-output');

            if (!fileInput.files[0]) {
                outputDiv.textContent = 'Please select an audio file first';
                return;
            }

            outputDiv.textContent = 'Converting voice...';

            try {
                const audio = await puter.ai.speech2speech(fileInput.files[0]);
                outputDiv.innerHTML = '';
                outputDiv.appendChild(audio);
                audio.controls = true;
            } catch (error) {
                outputDiv.textContent = 'Error: ' + error.message;
            }
        });
    </script>
</body>
</html>
Collapse code

Example 3: Convert to a Specific Voice

Specify a voice ID to convert audio to a particular voice:

<html>
<body>
    <script src="https://js.puter.com/v2/"></script>
    <script>
        (async () => {
            const audio = await puter.ai.speech2speech({
                audio: 'https://assets.puter.site/example.mp3',
                voice: '21m00Tcm4TlvDq8ikWAM', // Rachel sample voice
            });

            document.body.appendChild(audio);
            audio.controls = true;
            audio.play();
        })();
    </script>
</body>
</html>

List of Voices

Here are the premade voice IDs you can use with the speech to speech API:

Name Voice ID Gender Age Accent Description Use Case
Adam pNInz6obpgDQGcFmaJgB male middle aged american deep narration
Alice Xb7hH8MSUJpSbSDYk0k2 female middle aged british confident news
Antoni ErXwobaYiN019PkySvjV male young american well-rounded narration
Arnold VR6AewLTigWG4xSOukaG male middle aged american crisp narration
Bill pqHfZKP75CvOlQylNhV4 male middle aged american strong documentary
Brian nPczCjzI2devNBz1zQrb male middle aged american deep narration
Callum N2lVS1w4EtoT3dr4eOWO male middle aged american hoarse video games
Charlie IKne3meq5aSn9XLyUdCD male middle aged australian casual conversational
Charlotte XB0fDUnXU5powFXDhCwa female middle aged english-swedish seductive video games
Chris iP95p4xoKVk53GoZ742B male middle aged american casual conversational
Clyde 2EiwWnXFnvU5JabPnv8n male middle aged american war veteran video games
Daniel onwK4e9ZLuTAKqWW03F9 male middle aged british deep news presenter
Dave CYw3kZ02Hs0563khs1Fj male young british-essex conversational video games
Domi AZnzlk1XvdvUeBnXmlld female young american strong narration
Dorothy ThT5KcBeYPX3keUQqHPh female young british pleasant children's stories
Drew 29vD33N1CtxCmqQRPOHJ male middle aged american well-rounded news
Emily LcfcDJNUP1GQjkzn1xUU female young american calm meditation
Ethan g5CIjZEefAph4nQFvHAz male young american — ASMR
Fin D38z5RcWu1voky8WS1ja male old irish sailor video games
Freya jsCqWAovK2LkecY7zXl4 female young american — —
George JBFqnCBsd6RMkjVDRZzb male middle aged british raspy narration
Gigi jBpfuIE2acCO8z3wKNLl female young american childish animation
Giovanni zcAOhNBS3c14rBihAFp1 male young english-italian foreigner audiobook
Glinda z9fAnlkpzviPz146aGWa female middle aged american witch video games
Grace oWAxZDx7w5VEj9dCyTzz female young american-southern — audiobook
Harry SOYHLrjzK2X1ezoPC6cr male young american anxious video games
James ZQe5CZNOzWyzPSCn5a3c male old australian calm news
Jeremy bVMeCyTHy58xNoL34h3p male young american-irish excited narration
Jessie t0jbNlBVZ17f02VDIeMI male old american raspy video games
Joseph Zlb1dXrM653N07WRdFW3 male middle aged british — news
Josh TxGEqnHWrfWFTfGW9XjX male young american deep narration
Liam TX3LPaxmHKxFdv7VOQHJ male young american — narration
Lily pFZP5JQG7iQjIQuC4Bku female middle aged british raspy narration
Matilda XrExE9yKIg1WjnnlVkGX female young american warm audiobook
Michael flq6f7yk4E4fJM5XTYuZ male old american — audiobook
Mimi zrHiDhphv9ZnVXBqCLjz female young english-swedish childish animation
Nicole piTKgcLEGmPE4e6mEKli female young american whisper audiobook
Patrick ODq5zmih8GrVes37Dizd male middle aged american shouty video games
Paul 5Q0t7uMcjvnagumLfvZi male middle aged american ground reporter news
Rachel 21m00Tcm4TlvDq8ikWAM female young american calm narration
Sam yoZ06aMxZJJ28mfd3POQ male young american raspy narration
Sarah EXAVITQu4vr4xnSDxMaL female young american soft news
Serena pMsXgVXv3BLzUgSXRplE female middle aged american pleasant interactive
Thomas GBv7mTt0atIp3Br8iCZE male young american calm meditation
Santa Claus knrPHWnBmmDHMoiMeP3l male old — — christmas

Conclusion

That's it! You now have free, unlimited access to professional voice changing capabilities using Puter.js. Convert voices, clone audio, and remove background noise—all without API keys or backend servers.

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