Show HN: ShadowCat – file transfer through QR Codes in a Browser
ShadowCat, an open-source project by unprovable, allows file transfer through QR codes entirely in a browser. The sender selects a file, which is split into chunks and encoded as a series of QR codes displayed on screen. The recipient uses a camera to scan the codes, which are then reassembled into the original file. The tool runs client-side with no server uploads, ensuring privacy. It supports files up to a few megabytes due to QR code capacity limits. Available now on GitHub, it is ideal for transferring small files between devices without network connectivity or for secure transfers in sensitive environments.
// why it matters
Enables serverless file transfers between devices using only a camera and browser.