File System API
The File System API is a web platform interface that allows web applications to read, write, and manage files and directories on a user's local device. It provides secure, sandboxed access to the file system through a browser, enabling offline storage, file editing, and data persistence without server uploads. This API is part of modern web standards and is supported in browsers like Chrome, Edge, and Safari.
Developers should learn the File System API when building web applications that require local file handling, such as photo editors, document processors, or offline-capable apps. It's essential for scenarios where users need to save work locally, import/export files without cloud dependencies, or manage large datasets efficiently. Use it to enhance user experience by enabling direct file operations in the browser, reducing server load and improving performance.