Discover how the File Handling API-and its ecosystem like the File System Access API and OPFS-lets web apps act like native file handlers, enabling powerful local-first storage patterns while reshaping privacy and security responsibilities for developers and users.
Explore how the File Handling API lets Progressive Web Apps register for and open files like native apps, enabling smoother hybrid experiences, what it can and cannot replace, and practical guidance to implement resilient file workflows.
A deep comparison between the new File Handling API and traditional web file techniques (input[type=file], drag-and-drop, server uploads). Learn the practical trade-offs, performance implications, real-world scenarios, and how to choose the right approach for your web app.
Learn how to use the File System Access / File Handling APIs and asynchronous patterns in JavaScript to read, stream, and write large files safely and efficiently. Includes practical code examples, performance tips, and common pitfalls.
A practical, in-depth guide to the File Handling API: how it works, how to register your app as a file handler, code examples for receiving files on launch, fallbacks, best practices, and security considerations for modern web apps.