關於 二維碼
產生、上傳、粘貼或攝像頭掃描
QR codes are a compact transport for a string, not an encryption layer. Before sharing one, inspect the decoded destination or payload and make sure the printed size, contrast, and error-correction level fit the scanning environment.
點樣用呢個開發者工具
- Choose generate or scan mode.
- For generation, enter the exact text or URL and review the preview. For scanning, upload, paste, or deliberately enable the camera.
- Decode or download the result, then verify the payload before opening a link or sharing it.
私隱同資料處理
Image decoding and QR generation run in the browser. Camera access is requested only after you choose the camera workflow; do not encode secrets into a QR code unless you have a secure distribution plan.
相關開發者工具
常見問題
Does a QR code hide the text inside it?
No. A QR code is a visual encoding. Anyone who scans it can usually recover the embedded text or URL.
Why does scanning need camera permission?
The browser needs permission to read camera frames. You can use upload or paste instead when camera access is unavailable or not appropriate.
Can every QR image be decoded?
Only when the code is large and clear enough, has sufficient contrast, and is not too damaged or distorted for the decoder to recover it.