I built another React file uploader. But this time, I built it for AI agents too.

When we started building the upload system for our new product, I did what every engineer does—I looked at the existing ecosystem first.

There are already some fantastic open source libraries.

react-dropzone is excellent if all you need is drag-and-drop.

Uppy is feature-rich and supports almost every upload scenario you can imagine.

FilePond is polished and battle-tested.