Does the camera stream leave my device?

No. The video frames are decoded locally with the zxing library. Open DevTools → Network and you'll see zero outgoing video data — only the page's static assets.

Why does the camera not start?

Browsers require HTTPS (or localhost) for camera access. Check that the URL starts with https://. If you denied permission previously, reset it in your browser's site settings and try again.

What if I don't have a camera?

Use “Upload QR image” to decode a PNG, JPG or screenshot of a QR code. The same zxing library processes the image locally and returns the encoded text.

Which QR types are supported?

Standard QR codes (all versions and error-correction levels) are recognized. The reader does not currently decode 1D barcodes like CODE128 or EAN-13 — use the Barcode Generator for those.

Why does it sometimes miss the code?

Lighting, motion blur and reflection all affect decoding. Hold the camera steady, ensure the QR fills most of the highlighted box, and avoid glare on glossy surfaces.

Is scan history saved?

No. History lives only in the current tab. Closing the tab clears everything — your scans are never written to disk or sent anywhere.

QR Code Reader

Scan a QR code with your camera or upload an image — 100% private.

100% private — no uploads QR & Barcode ToolsFree & unlimited Read tutorial

See how it works

Watch a quick simulation of this tool in action — no file needed.

How to use QR Code Reader

Follow these steps — everything happens instantly in your browser.

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Step 1. Click “Start camera” and allow camera access when prompted.
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Step 2. Point the camera at a QR code — detected text appears automatically.
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Step 3. If you don't have a camera, click “Upload QR image” to decode from a file.
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Step 4. Copy the detected text or pick from recent scans.