Web APIs | MDN

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When writing code for the Web, there are a large number of Web APIs available. Below is a list of all the APIs and interfaces (object types) that you may be able to use while developing your Web app or site.
Web APIs are typically used with JavaScript, although this doesn't always have to be the case.
This is a list of all the APIs that are available.
This is a list of all the interfaces (that is, types of objects) that are available.
This page was last modified on Jul 29, 2025 by MDN contributors.
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