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Performance update on GenerateQrCode function by HolyOne · Pull Request #438 · Shane32/QRCoder

@HolyOne

Faster generation of QRCode using StringBuilder

@HolyOne

gfoidl

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The StringBuilder could be used in GenerateQrCode as well, to avoid the string-manipulations (and these allocations).

Co-authored-by: Günther Foidl <gue@korporal.at>
Co-authored-by: Günther Foidl <gue@korporal.at>
Co-authored-by: Günther Foidl <gue@korporal.at>

@codebude

Hi @HolyOne , hi @gfoidl Thanks for your support and pointing me onto this topic. I just re-fined your PR a little bit. I think by setting the capacity we can squeeze out even a little bit more performance. 0c54783

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Dec 5, 2025