Which barcode formats are supported?

QR Code, Data Matrix, PDF417, Aztec, Code 128, Code 39, Code 93, EAN-13, EAN-8, UPC-A, UPC-E, ITF, Codabar, and RSS/DataBar formats via the ZXing library.

Is my image or camera feed uploaded anywhere?

No. All decoding is performed locally in your browser using the ZXing-js library. No image data is sent to any server.

Why can't my barcode be detected?

Ensure the image is clear and well-lit with the barcode in focus. Blurry, partially cropped, or very small barcodes may not decode. Try increasing contrast or brightness first.

How do I use live camera scanning?

Click 'Use Camera', grant microphone/camera permission when prompted, and point your camera at the barcode. Scanning is continuous — the result appears automatically.

Utility 免费无需注册

Barcode & QR Code Reader

Scan barcodes and QR codes from an uploaded image or live camera feed.

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关于此工具

Decode barcodes and QR codes instantly — either by uploading an image file or by pointing your device's camera at a code for live scanning. The tool uses the ZXing-js library to support a wide range of formats including QR Code, Data Matrix, PDF417, Code 128, Code 39, EAN-13, EAN-8, UPC-A, UPC-E, Aztec, and more. Results show the decoded value, the barcode format type, and a copy button. If a URL is detected, a safe preview link is shown. All decoding happens entirely in your browser.

使用方法

1 Click 'Upload Image' to select a photo containing a barcode or QR code.
2 Alternatively, click 'Use Camera' to enable live scanning with your device camera.
3 Wait for the decoder to process the code — results appear below.
4 Copy the decoded value with the Copy button.
5 If a URL is detected, click the preview link to verify before visiting.

关于此工具

使用方法

常见问题