About This Tool
What is 二维码生成器?
A tool for generating QR codes from text or URLs. Share website links, business cards, event information, and more via QR codes. Customize colors and sizes freely.
How to Use
- Enter text or a URL in the input field.
- Set the QR code size and margin.
- Optionally change the foreground and background colors.
- Download the generated QR code.
Key Features
- Generate QR codes from any text or URL
- Size (px) and margin adjustment
- Customizable foreground and background colors
- Download as PNG image
Tips
- Shorter data in QR codes results in higher scan recognition rates.
- Using a URL shortener service creates cleaner QR codes.
- Ensure sufficient contrast between foreground and background colors for reliable scanning.
二维码生成器
从文本或 URL 生成二维码
Frequently Asked Questions
QR码最多能存储多少数据？▼
QR码最多可存储7,089个数字字符、4,296个字母数字字符或2,953字节二进制数据。但数据越多，QR码越密集越难扫描。为获得最佳效果，请将内容控制在300个字符以内。
可以自定义QR码的颜色吗？▼
可以更改前景和背景颜色。但务必保持高对比度——深色前景配浅色背景效果最好。避免浅配浅或深配深的组合。前景色应始终比背景色深以确保可靠扫描。
为什么某些扫描器无法读取生成的QR码？▼
常见问题包括：前景和背景颜色对比度不足、数据量对应的尺寸过小、码周围的空白区（静区）不足、或颜色反转。确保至少4个模块的边距和良好的对比度以获得最佳兼容性。