Text to Speech API

Text to Speech API

Text-to-Speech API allows you to convert written text into spoken words. The API supports multiple languages and can be integrated with any application for speech synthesis, voice assistants and accessibility.

API description


About the API:


Our Text to Speech API is a powerful tool that allows you to convert written text into spoken words. The API supports multiple languages and can be integrated with any application for speech synthesis, voice assistants, and accessibility.

The API uses advanced natural language processing algorithms to analyze the input text and generate corresponding speech output with a natural-sounding voice. The output can be customized with different voices, language, and speech rate. This makes it an ideal tool for a variety of use cases such as speech synthesis, voice assistants, and accessibility.

The API can be integrated into any application to provide spoken feedback, such as reading text aloud, for users with visual impairments, or generating an audio version of written content, like books, articles and more. It can also be used to create voice assistants and chatbots, which can interact with users through speech.

In addition, the API can be used in other applications such as telephony systems, navigation devices, and other systems where speech synthesis is needed. It can also be used to generate audio clips of any text, useful for podcasting, video presentations, and more.

Overall, our Text-to-Speech API is a valuable tool for businesses and individuals looking to add speech synthesis capabilities to their applications. It is user-friendly, and easy to use and it supports multiple languages, making it accessible for a wide range of use cases and audiences.

What this API receives and what your API provides (input/output)?

Pass the text that you want to convert and select the language. Receive the audio ready to use.

What are the most common uses cases of this API?

  1. Accessibility: Use the API to provide spoken feedback for users with visual impairments, such as reading text aloud on websites or in mobile apps.

  2. Voice assistants: Use the API to create voice assistants and chatbots that can interact with users through speech.

  3. Speech synthesis: Use the API to generate spoken output from the written text for use in telephony systems, navigation devices, and other applications.

  4. Educational content: Use the API to convert written educational content, such as e-books or study guides, into spoken audio, making it more accessible for students.

  5. Podcasting: Use the API to generate audio clips of written content, such as blog posts or articles, for use in podcast episodes.

  6. Video presentations: Use the API to generate spoken audio of written content, such as scripts or narration, for use in video presentations or animations.

Are there any limitations to your plans?

Besides API call limitations per month, there are no other limitations.


List of supported languages:

  • en_US (USA)
  • en_GB (Great Britain)
  • en_IN (India)
  • en_AU (Australia)
  • pt_BR (Brasil Portuguese)
  • pt_PT(Portugal Portuguese)
  • fr_FR (FR French)
  • fr_CA (Canadian French)
  • de_DE (German)
  • es_ES (Spanish)
  • sv_SE (Sweedish)
  • ru_RU (Russian)
  • tr_TR (Turkish)



API Documentation


Convert your texts to audio with this Instant Text-to-Speech (TTS) using realistic voices.

You will receive the URL of where your MP3 file is located. Later you can download it if needed. 

Gender voice. Options: male, female or neutral.

List of supported languages:

  • en_US (USA)
  • en_GB (Great Britain)
  • en_IN (India)
  • en_AU (Australia)
  • pt_BR (Brasil Portuguese)
  • pt_PT(Portugal Portuguese)
  • fr_FR (FR French)
  • fr_CA (Canadian French)
  • de_DE (German)
  • es_ES (Spanish)
  • sv_SE (Sweedish)
  • ru_RU (Russian)
  • tr_TR (Turkish)

Please add "text_premium_" (if text content) or "ssml_premium_" (if SSML code) before the language code if you want to use the premium voice (for e.g. for en_US will be text_premium_en_US)

POST https://zylalabs.com/api/23/text+to+speech+api/84/convert


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Convert - Endpoint Features
Object Description
text [Required] Your text content. 10000 characters limit for any plan.
gender_voice [Required] Gender voice. Options: male, female or neutral.
language [Required] Language. Options: en_US, en_GB, en_IN, en_AU, pt_BR,pt_PT, fr_FR, fr_CA, de_DE, es_ES, sv_SE, ru_RU or tr_TR. Please add "text_premium_" (if text content) or "ssml_premium_" (if SSML code) before the language code if you want to use the premium voice (for e.g. for en_US will be text_premium_en_US)
speakingRate [Optional] Declare the speed of the voice. The ranges are between 0.25 (slow) and 1 (normal).

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Text to Speech API REST API, simply include your bearer token in the Authorization header.


Header Description
Authorization [Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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The Text-to-Speech API uses advanced natural language processing algorithms to analyze the input text and generate corresponding speech output. It converts written text into spoken words using a natural-sounding voice. You can customize the output by selecting different voices, languages, and adjusting the speech rate.

The API can be used for various purposes, including speech synthesis, voice assistants, accessibility features, telephony systems, navigation devices, and more. You can integrate it into your applications to provide spoken feedback or generate audio versions of written content. It can also be used to create voice assistants, chatbots, podcasts, and video presentations.

Yes, the API supports multiple languages. You can pass text in different languages to the API and select the desired language for the speech output. This allows you to provide speech synthesis capabilities in various language contexts.

To use the API, you need to pass the text you want to convert into spoken words as input. Additionally, you can select the desired language for the speech output. The API will provide you with an audio URL as the output, which you can use to access and play the generated audio.

Yes, you can customize the voice and speech rate with the API. It offers different voices to choose from, allowing you to select the one that best suits your application or audience. Additionally, you can adjust the speech rate to control the speed at which the text is spoken, providing flexibility in the audio output.

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