QR码扫描器
从图片或摄像头扫描QR码。即时解码URL、文字、WiFi和联系人。
将QR码图片拖放到此处或点击选择
PNG, JPG, GIF, WebP
扫描历史
ℹ️ 关于 QR码扫描器
The Qr Scanner is a free developer tool built for speed and privacy. Scan QR codes from images or camera. Decode URLs, text, WiFi, contacts and more instantly. Every operation runs entirely in your browser, which means your code, text, or payload is never uploaded to a server. Paste your input, hit the button, and get the output — formatted, validated, or transformed — in milliseconds. This Qr Scanner is designed to replace slow, bloated web apps with a single focused page that loads fast, works offline after first visit, and handles both small snippets and large inputs gracefully.
💡 使用场景
💎 专业提示
- Paste your content directly — the Qr Scanner detects common input patterns and applies sensible defaults automatically.
- Use keyboard shortcuts (Ctrl/Cmd+A to select all, Ctrl/Cmd+C to copy) to speed up your workflow inside the Qr Scanner.
- For very large inputs, break them into chunks — most browser tabs can handle megabytes of text, but parsing huge payloads may freeze the UI briefly.
- The Qr Scanner does not log or store your input. If you need history, copy important outputs to a local file or note app.
- Combine the Qr Scanner with other tools on this site (formatters, converters, encoders) to build complete data pipelines without leaving your browser.
❓ 常见问题解答
Yes, fully free with no signup, no API key, no watermarks, and no usage limits.
No. The Qr Scanner runs entirely client-side in your browser. Your input never touches our servers.
There is no hard limit, but expect slowdowns on inputs larger than a few megabytes, depending on your device's memory.
Yes. Outputs generated with the Qr Scanner are yours to use freely in any personal or commercial project.
Most of the logic runs in client-side JavaScript, so after the initial load you can often keep working without a network connection.
None. Because the Qr Scanner runs in your browser, you can process as many inputs as your hardware allows without API keys or throttling.