二维码生成器
在线生成二维码，支持 URL、文本、联系方式。可自定义颜色和大小，浏览器端生成不消耗服务器资源。
QR Code Generator — Custom Colors, Logo, and Error Correction
工具介绍
QR Codes are 2D barcodes invented by Denso Wave in 1994. They can hold 7000+ digits, 4000+ alphanumeric chars, or 1800+ kanji/Hanzi. This tool supports custom foreground/background colors, error correction levels (L/M/Q/H), size, and an optional center logo. Generation is 100% local, with no upload — sharper output than any cloud service.
怎么使用
- Enter your content (URL, text, WiFi config, vCard, etc.)
- Pick colors and error-correction level
- (Optional) upload a logo to embed in the center
- Click "Generate" and download PNG or SVG
常见用例
- Encoding URLs, WiFi passwords, or contact cards
- Product packaging with traceability or coupon codes
- Conference check-in / event tickets
- Sharing long URLs via a single scannable code
常见问题
Q: L / M / Q / H levels?
A: Higher = more tolerant to damage (H survives 30% obstruction) but denser. Use H when embedding a logo.
Q: Maximum capacity?
A: 7089 digits, 4296 alphanumeric, ~1817 kanji (UTF-8). Over the limit fails to scan.
Q: Is my data safe?
A: 100% local generation, no server.
小贴士
Pre-compress logos with the Image Compressor tool; <30% area is ideal.
Print = SVG (vector). Screen = PNG.
Need to decode a QR? Try the QR Scanner tool.