Do these QR codes expire?

No. The content is stored in the code itself, not behind a redirect, so it works as long as the link or text it holds does.

Which error correction level should I use?

M is right for most uses. Choose Q or H if the code will be printed small, outdoors, or with a logo on top.

Everything runs in your browser. Nothing you paste or open is uploaded.

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Create a QR code for a URL, plain text, a Wi-Fi network or an email, style it, and download it as PNG or SVG. Codes never expire.

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Error correction

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Do these QR codes expire?: No. The content is stored in the code itself, not behind a redirect, so it works as long as the link or text it holds does.
Which error correction level should I use?: M is right for most uses. Choose Q or H if the code will be printed small, outdoors, or with a logo on top.
Is my data uploaded?: Everything runs in your browser. Nothing you paste or open is uploaded.