Most online file converters require uploading your documents, images, or videos to an unknown server. This is slow, inconvenient, and raises serious privacy concerns. I decided to build something different: a converter that works entirely inside your browser.
Processing large files without a backend presents two main engineering challenges:
How do you avoid consuming all available RAM?
How do you prevent the user interface from freezing?
This article explains how I solved these problems using OPFS, Web Workers, and a Backpressure mechanism. The result is a working tool you can try right now: PixelForge Free.
