Reading QR codes without a computer(qr.blinry.org)

593 points by input_sh 2 years ago | 82 comments

An interactive explainer, written for a 37C3 workshop, teaching the anatomy of QR codes and how to decode them by hand using a cheat sheet.

Show HN: An interactive demo of QR codes' error correction(qris.cool)

93 points by Xiione 1 year ago | 8 comments

Show HN: QR code renderer in a TrueType font(qr.jim.sh)

62 points by foodevl 4 months ago | 12 comments

Dithered QR Codes(andrewt.net)

337 points by jmusall 2 months ago | 37 comments

A personal web page explaining how to make dithered QR codes that embed a picture, with a generator tool and source code.

Why are QR Codes with capital letters smaller than QR codes with lower case?(shkspr.mobi)

293 points by todsacerdoti 1 year ago | 87 comments

Dual-Link QR Code Generator(dualqrcode.com)

53 points by redbell 1 year ago | 15 comments