QR 码版本 2 的推荐像素大小 -- QR 码的 UX
对于我的 PC/Mac/Linux 网站，是否有针对使用 iPhone/Android 手机阅读器的用户推荐的 QR 码像素大小？
我将使用具有 Q 冗余的 QR 码版本 2。请参阅参考。
但我应该将其设置为多少像素？ 100×100？更大？我还看到一个网站，页面上有一个相对较小的二维码，并附有注释，您可以单击该代码以显示带有较大版本的弹出窗口，以便于扫描。是否需要/推荐 UX（用户体验）？
我只找到了写着“尝试一下”的博客文章。还有更明确的推荐吗？
For my PC/Mac/Linux website, is there a recommended pixel size for a QR code aimed at people with iPhone/Android phone readers?
I'll be using the QR code ver 2 with Q redundancy. See ref.
But what size should I make it in pixels? 100 x 100? Larger? I also saw one site that had a relatively small QR code on the page with a comment that you can click the code to show a popup with a larger version for easier scanning. Is that UX (user experience) needed/recommended?
I've only found blog posts that say "try it out." Any more definitive recommendations?
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使用“L”冗余。在实践中，更简单的代码的好处超过了更低的纠错率。在 Google，我们建议印刷广告商将其与版本 2 代码一起使用，并在一侧打印不小于 0.5 英寸的尺寸。分辨率问题与 QR 代码无关。
Use "L" redundancy. The benefit of the simpler code outweighs the lower error correction in practice. At Google, we recommended print advertisers use this with a version 2 code and print no smaller than 0.5" on a side. THe question of resolution is irrelevant for a QR code.
大多数人说“尝试一下”的原因是，通常您的二维码会集成到网站中，并且您希望条形码在其中看起来不错。我更喜欢弹出版本，因为某些 Android 设备可能有固定焦距摄像头，并且二维码越大，扫描这些设备就越好/越容易。当然太大，它可能会超出笔记本电脑屏幕等设备的扫描区域，用户必须向后拉才能将其纳入框架中。
The reason most say 'try it out' is that typically your QR code would be integrated into a website and you want the barcode to look nice in it. I rather like the popup version since some Android devices may have a fixed focus camera and the larger a QR code is, the better/easier it is to scan for those devices. Of course too large and it may exceed the scanning area of the device such as a laptop screen, and the user has to pull back to get it in frame.
我自己也为此苦苦挣扎了一段时间。我们在 http://www.chagrinfallscomputerrepair.com/QRcode.aspx 创建了一个 QR 码创建器，并且让用户可以选择将其设置为 png 文件格式的任意大小。我认为答案是“能装多大就多大”。我认为问题在于图像的质量。打印 QR 码时，显然您希望使用能够打印所需质量的优质打印机。当然，图像分辨率是关键。越高越好。因此，如果可以提高质量，图像尺寸就可以减小。我正在研究比这更好的答案，但这就是我目前所拥有的。显然，您所做的任何事情都应该进行测试，以确保其按预期工作。
I have been struggling with this for a while myself. We created a QR code creator at http://www.chagrinfallscomputerrepair.com/QRcode.aspx and give the user the option of making it any size in a png file format. I think the answer is "as big as it will fit". The problem is the quality of the image I believe. When printing a QR code, obviously you want to use a quality printer who can print the quality necessary. Image resolution is key, of course. The higher the better. So if you can get the quality up, the image size can come down. I am working on a better answer than this, but this is what I have for the moment. Obviously anything you do you should test to be sure it works as expected.