Different encoding modes have different size requirements for encoding the same data. The encoding mode used in the QR Code (numeric, alphanumeric, byte, or kanji) can also affect its size. More data requires a larger QR Code, while less data allows for smaller sizes. The amount of data encoded in the QR Code affects its size. Higher versions accommodate more data but result in larger QR Codes.ĭepending on the amount of data to be encoded and the character type (alphanumeric, binary, Kanji, etc) more modules are required, and therefore a bigger size. This is the maximum number of modules that can be used in QR Codes today. The latest QR Code type is Version 40 with a 177 x 177 configuration-a total of 31,329 modules. With each new version, there has been an addition of 4 modules horizontally and vertically. Version 2 comprised a 25 x 25 module configuration, Version 3 was 29 x 29 modules, and Version 4, 33 x 33 modules. The earliest version (Version 1) of a QR Code comprised a 21 x 21 module configuration, i.e, 21 modules along two directions. Larger module sizes increase the overall size of the QR Code but may enhance scanability, especially in low-resolution or low-contrast environments. The module size refers to the individual squares (modules) that make up the QR Code. Each of these squares, which can be in other contrasting colors apart from black and white, is called a ‘module’. Simply put, QR Codes are 2D versions of barcodes.Ī simple black-and-white QR Code consists of many tiny black and white squares that form patterns so that information can be embedded within it. Getting QR Code size right will ensure easy scannability, regardless of where you plan to deploy them. The combination of size and scanning distance in particular instances can even render your QR Codes unreadable. This is because QR Code size correlates with scannability.Įven if users want to scan your codes, the QR Code size might hinder them from doing so. QR Code size does matter-and overlooking this can cost you a lot of scans.
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