From the HackerLinks archive

ShadowCat

Browser-based QR file transfer tool for moving bytes without servers.

At a glance:

First seen:2026-05-22

Last seen:2026-05-22

Times seen:1

Website:github.com

The short version

Browser-based QR file transfer tool for moving bytes without servers.

Why it caught our attention

The thread drew praise for the fountain-code QR transfer idea and surfaced adjacent tools with real demand.

Where it surfaced on Hacker News

2026-05-22

Editorial paraphrase

Commenters called the approach efficient and "cool and minimalistic," then pointed to qr-send.com and phntm.sh as related projects.

Show HN: ShadowCat – file transfer through QR Codes in a Browser

Also surfaced in this discussion

Show HN: ShadowCat – file transfer through QR Codes in a Browser

2026-05-22