this post was submitted on 30 Dec 2023
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Higher error correction makes scanning undamaged QR codes less reliable (huonw.github.io)
submitted 11 months ago by haxor@derp.foo to c/hackernews@derp.foo
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[โ€“] DirtyCNC@lemmynsfw.com 4 points 11 months ago* (last edited 11 months ago)

TL;DR: Pick L or M error correction depending on expected conditions. It is recommended to increase the error correction level unless it results in the QR code resolution (aka version) increasing. Many generators have this option. If you own the destination domain, use a short URL that is descriptive and contains/redirects to the page/resource in question, such as http://zooberlin.de/map?qr โ†’ https://www.zooberlin.de/wp-content/uploads/2020/06/karte_mobile.pdf?utm_campaign=poster (fictional example).