apisyu.com

Free YouTube to MP3 & MP4 Conversion API

Embed Button API

GEThttps://apisyu.com/embed/{TYPE}/{VIDEO_ID}
  • Parameters required
  • TYPE mp3 or mp4
  • VIDEO_ID any YouTube ID
  • Parameters optional
  • color = 1abc9c (default: hex code without #)
  • lang = en, es, fr, de, pt, it, zh, ar, ru or hi (default: en)

iFrame code:

<iframe src="https://apisyu.com/embed/mp3/TW9d8vYrVFQ" width="100%" height="80" allowtransparency="true" scrolling="no" style="border:none"></iframe>

Generated preview:

Single Button API

GEThttps://apisyu.com/single/{TYPE}/{VIDEO_ID}
  • Parameters required
  • TYPE mp3 or mp4
  • VIDEO_ID any YouTube ID
  • Parameters optional
  • audio = 64, 128, 192, 256 or 320 (default 320 for mp3)
  • video = 240, 360, 480, 720 or 1080 (default 720 for mp4)
  • theme = dark or light (default light)
  • lang = en, es, fr, de, pt, it, zh, ar, ru or hi (default: en)

Without a theme parameter, it will use the preferred device color scheme of the user.

iFrame code:

<iframe src="https://apisyu.com/single/mp3/TW9d8vYrVFQ" width="100%" height="130" allowtransparency="true" scrolling="no" style="border:none"></iframe>

Generated preview:

Multi Button API

GEThttps://apisyu.com/button/{TYPE}/{VIDEO_ID}
  • Parameters required
  • TYPE mp3 or mp4
  • VIDEO_ID any YouTube ID
  • Parameters optional
  • theme = dark or light (default light)
  • lang = en, es, fr, de, pt, it, zh, ar, ru or hi (default: en)

Without a theme parameter, it will use the preferred device color scheme of the user.

iFrame code:

<iframe src="https://apisyu.com/button/mp3/TW9d8vYrVFQ" width="100%" height="130" allowtransparency="true" scrolling="no" style="border:none"></iframe>

Generated preview:

Widget API

GEThttps://apisyu.com/widget/{VIDEO_ID}
  • Parameters required
  • VIDEO_ID any YouTube ID
  • Parameters optional
  • theme = dark or light (default light)
  • lang = en, es, fr, de, pt, it, zh, ar, ru or hi (default: en)

Without a theme parameter, it will use the preferred device color scheme of the user.

iFrame code:

<iframe src="https://apisyu.com/widget/TW9d8vYrVFQ" width="100%" height="385" allowtransparency="true" scrolling="no" style="border:none"></iframe>

Generated preview:

What is Apisyu.com and why is it the best free API to convert YouTube to MP3 and MP4?

Apisyu is a free API to convert YouTube videos to MP3 and MP4, designed for maximum speed, superior quality, and easy integration into any website. By simply inserting a lightweight <iframe>, you can embed a fully responsive widget that accepts any YouTube video ID and instantly generates download options in audio (up to 320 kbps) and video (up to 1080p). All within a modern interface featuring MP3 / MP4 tabs to enhance user experience.

This YouTube conversion API is highly customizable: it supports light or dark mode, and multiple languages to fit global audiences. No API keys, heavy libraries, or SDKs needed—just copy the snippet and start converting YouTube videos hassle-free. Ideal for developers, bloggers, or educational projects that want to offer a fast, reliable download tool directly on their platform.

What do audio and video qualities like 64, 128, 720 or 1080 mean?

When we talk about audio and video quality, it’s common to see numbers like 64, 128, 720 or 1080—but what do they really mean?

For audio, numbers like 64 kbps, 128 kbps, 192 kbps, 256 kbps, and 320 kbps represent the bitrate. A higher number means better sound quality, since more information is preserved. For example, 128 kbps is a standard acceptable quality, while 320 kbps is considered high or professional audio quality, ideal for music and podcasts.

For video, figures like 240p, 360p, 480p, 720p, and 1080p refer to the resolution of the video, i.e., the number of pixels on the screen. 240p and 360p are low resolutions or standard definition (SD), suitable for slow connections or small screens. In contrast, 720p and 1080p offer high definition (HD and Full HD), delivering sharper and more detailed content.

Understanding these qualities allows you to choose the best option based on device, content type, and connection speed. Whether in streaming platforms, downloads, or live broadcasts, selecting the right resolution and bitrate significantly enhances the user experience.