Turn any text or URL into a QR code and download it as a PNG. Pick the error-correction level (L/M/Q/H) — higher levels survive more damage and are better for printing; the size and QR version adapt automatically to your input.
The encoder is written from scratch and runs entirely in your browser: no QR text ever leaves your device, which matters if you encode payment addresses, Wi-Fi credentials or private links.
Frequently asked questions
How much text fits in one QR code?
Up to 271 characters at the lowest error correction (L) in this generator — shorter for higher ECC levels.
Which error-correction level should I pick?
M is the everyday default; use Q or H for stickers, packaging or anything that might get scratched.
How big can I print it?
A QR scans reliably at roughly one-tenth of the scanning distance — a 10 cm code works from about a meter away.
中文说明
把任意文本或 URL 变成二维码并下载 PNG。可选择纠错级别（L/M/Q/H）——级别越高越耐污损，更适合印刷；尺寸和版本会根据内容自动适配。
编码器完全手写并在浏览器本地运行：二维码内容不会离开你的设备——在编码收款地址、Wi-Fi 凭据或私密链接时这一点尤为重要。
常见问题
一个二维码能放多少字？
本生成器在最低纠错级别（L）下最多 271 字符，纠错级别越高容量越小。
纠错级别怎么选？
日常用 M 即可；贴纸、包装等可能磨损的场景建议 Q 或 H。
二维码可以印多大？
大致按扫描距离的十分之一取边长即可——10 厘米的码在约 1 米外可稳定扫描。