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Filtered by: Standards × 2 posts
QR Code Versions Explained: From V1 (21×21) to V40 (177×177)
Ahmad Tayyem Ahmad Tayyem
· May 16, 2026 · 9 min read

QR Code Versions Explained: From V1 (21×21) to V40 (177×177)

Every QR code is one of 40 versions defined by ISO/IEC 18004. Capacity tables for V1 through V40, the module-count math, and how to pick the right version for your data and scan distance. 2026.

TechnicalQr code basicsQr code design
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ISO/IEC 18004: The QR Code Standard, Explained (2026)
Ahmad Tayyem Ahmad Tayyem
· May 16, 2026 · 9 min read

ISO/IEC 18004: The QR Code Standard, Explained (2026)

ISO/IEC 18004 — the international QR code standard. How QRs encode data, how they're structured, how scanners decode them, error correction explained.

TechnicalStandardsIso
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