Wormhole.app uses peer-to-peer transfer to send your files directly from your browser to the recipient, in addition to using cloud hosting. We use WebTorrent b

Wormhole.app uses peer-to-peer transfer to send your files directly from your browser to the recipient, in addition to using cloud hosting. We use WebTorrent behind-the-scenes, so we need random access to the end-to-end encrypted version of the files to satisfy requests from peers. So we try to put the files on disk using Filesystem Access API or IndexedDB, falling back to in-memory if there's not enough storage.