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二维码生成器

URL 或文本生成二维码:200/300/500px 三种尺寸、L/M/Q/H 纠错等级、PNG 下载,本地渲染。

Size
Error correction

Choosing error correction

The four levels trade capacity for robustness: L is smallest and decodes fastest, M is the everyday default, Q/H survive scratches or logo overlays (H allows covering up to ~30% of the code). The rendering library loads once from a public CDN (qrcode by soldair) and then runs entirely in your browser — the generated matrix never leaves your device; only the one-time script fetch needs connectivity.

如何使用二维码生成器

输入目标——URL、纯文本、Wi-Fi 参数、联系方式——二维码实时渲染。纠错等级自选:L 装得最多,H 可以扛住三成损伤并给 Logo 覆盖留位。SVG 标记可复制,PNG 按用途选尺寸下载。

嵌入时保留静区(四周白边)——扫码失败最常见的原因就是二维码贴上了别的图案。深底浅字远不如深色模块配浅色背景可靠;URL 载荷越短,模块网格越大越干净。

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