How Static QR Codes Work
QR (Quick Response) codes are two-dimensional optical barcodes that encode binary data into a grid of dark and light modules. Unlike dynamic QR codes that route through centralized tracking servers or expiring redirect services, static QR codes directly store the complete payload in the pattern itself.
Standard Static QR Payloads
- Plain Text & URL: Directly encodes alphanumeric text or canonical URLs that open immediately in camera and QR scanning apps without intermediaries.
- Wi-Fi Network (ZXing Protocol): Formats network credentials into a standard string allowing iOS and Android devices to join WPA/WEP networks instantly upon scan.
- vCard 3.0 Contact Card: Standard electronic business card payload with name, phone, organization, email, and website ready for one-tap address book import.
Optical Scan Reliability and Reed-Solomon Error Correction
QR codes employ Reed-Solomon algebraic error correction. With levels Q (25%) and H (30%), substantial portions of the matrix can be covered by a center brand logo or endure physical scratches while remaining completely decodable. Our generator evaluates contrast ratios and code density to alert you whenever scan reliability might be compromised.
Frequently Asked Questions
- 我的输入内容或 Logo 图片会被上传到服务器吗？
- 绝不会。本工具基于纯前端 Canvas 与 SVG 技术，所有矩阵运算、样式绘制与文件导出均 100% 在您的浏览器本地内存中完成。
- 生成的二维码会失效吗？有中间跳转网址吗？
- 完全不会失效。本工具生成的是直接静态载荷，绝不经过任何短网址服务或跳转跟踪服务器，永久有效。
- 在中间放置 Logo 会影响手机识别吗？
- 只要纠错级别维持在 Q（25%）或 H（30%），且 Logo 占比控制在 20% 以内，各类手机扫码工具均可极其稳定地秒扫。