The short version
Russ Cox's technical write-up on embedding images in valid QR codes through encoding.
From the HackerLinks archive
QArt Codes
Russ Cox's technical write-up on embedding images in valid QR codes through encoding.
At a glance:
First seen:2026-08-10
Last seen:2026-08-10
Times seen:1
Website:research.swtch.com
Why it caught our attention
A commenter explicitly treats the post as the canonical resource for the technique.
Where it surfaced on Hacker News
2026-08-10
“I always think of Russ Cox’s blog posts as canonical here:”
zellyn · recommendation
Direct HN comment
Dithered QR Codes