The recommended error correction level varies depending on a QR code's intended use and printing quality. There are four levels of error correction: low (L), medium (M), high (Q), and highest (H). If the QR code is likely smudged, damaged, or printed using a low-quality printer, then the Q or H correction level is recommended. However, if the likelihood of the QR code being damaged is low and printed using a high-quality printer, then the L or M level is recommended.
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Want to learn more about choosing the right error correction level? Don't miss our error correction level blog post for all the details!