A few months ago, I needed to add file conversion to a web app — nothing fancy, just letting users drop in a file and get back a different format. My first instinct was "call an API, done. " But sending user files to a server means storage costs, privacy headaches, and a queue if traffic spikes.
Source: [Dev.to](https://dev.to/ahaconvert_4518ffb5e649d6/browser-side-file-conversion-with-webassembly-2ie1)