生成工具
二维码生成器
免费的二维码生成器。为文本、URL 或联系信息生成二维码，并可自定义颜色、大小、边距和纠错级别。下载为 PNG。
Runs in your browser
编辑注
Understanding · A barcode that learned to read itself.
本深度章节目前仅有英文版本。上方的转换工具支持您的语言;长篇说明文章尚未翻译。
常见问题
Quick answers.
›Is the QR code an image I can download?
Yes — download as PNG. You control the size, foreground/background colors, and error-correction level.
›Is there a character limit?
QR codes hold up to ~4,000 alphanumeric characters depending on error-correction level. Shorter inputs scan more reliably.
›What error-correction level should I pick?
L (7%) for short URLs in clean conditions. H (30%) for printed codes that might get damaged or have a logo overlaid.
›Can I add a logo?
Currently we generate clean codes. Download the PNG and overlay a logo with any image editor — error correction H tolerates that.
›Is the generator free?
Yes — fully free, no signup, no usage limits.
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