Hi Renaud, your code is also based on the orginal version of Jochen Rick. Jochens code always worked but unfortunately had only a few tests and was codewise hard to understand. Dont know if you just moved or also refactored and extended it. I also once started with a clean reimplementation (also based on Jochens code but also checked barcode code from Java/JavScript) - mainly to understand the algorithms. I also did not want to limit to QR but also other barcode, includes proper packaging and more tests. Result is here: https://github.com/astares/Pharo-Barcode including also EAN8/EAN13 barcodes. Had to put it aside for time reasons - but maybe this could be the base for a full and clean barcode library for Pharo. I can move it to a community hosted location if more people want to join. Thanks T. Gesendet:Â Dienstag, 14. April 2020 um 00:19 Uhr Von:Â "Renaud de Villemeur via Pharo-users" <pharo-users@lists.pharo.org> An:Â "Any question about pharo is welcome" <pharo-users@lists.pharo.org> Cc:Â "Renaud de Villemeur" <renaud.devillemeur@tuta.io> Betreff:Â [Pharo-users] [ANN] QRCode on github Â