QR code version refers to the size of the QR code matrix, ranging from Version 1 (21x21 modules) to Version 40 (177x177 modules). Higher versions can store more data but produce denser patterns.
Each version increases the matrix by 4 modules per side. Version 1 (21x21) stores up to 17 characters. Version 40 (177x177) stores up to 4,296 characters. The generator automatically selects the smallest version that fits your data and error correction level.
A simple URL uses Version 2-4, producing a clean, easy-to-scan code.
Full contact details may require Version 10+, creating a denser pattern.
Paragraphs of text push to higher versions, requiring larger print sizes.
Most generators auto-select the smallest version for your data. Keep content short for simpler codes.
Versions 2-6 cover the vast majority of use cases (URLs, short text, WiFi).
Higher versions produce denser patterns that need larger print sizes and closer scanning distance.
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