mdn-data provides structured data extracted from the Mozilla Developer Network (MDN) website. It includes comprehensive details about CSS properties, HTML elements, HTTP headers, JavaScript features, and browser compatibility information. This package is invaluable for developers building tools, linters, IDEs, and documentation generators needing accurate and up-to-date data about web standards and browser behavior. It empowers developers to integrate reliable MDN content into their projects programmatically.
The mdn-data npm package has been actively maintained since its initial release in June 2017. Releases were sporadic until 2021, then became more consistent. 2024 saw a high release frequency. 2025 has continued to have frequent releases, with at least one release every month except May, with one release in August as of today.
mdn-data npm package downloads show a generally increasing trend from February 2024 to July 2025, peaking at over 185 million downloads. There was a massive spike from February to March 2024,. August 2025 data is incomplete, showing a dip compared to the previous months.
