Improve barcode scanning with native BarcodeDetector - #12784
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Use the browser-native BarcodeDetector (Shape Detection API) for camera barcode scanning when available, falling back to html5-qrcode. Native decoding is hardware-accelerated and far more robust to low light, blur and small codes than the pure-JS software decoder. Also: - Prefer the rear camera and higher resolution for better recognition - Add a flashlight (torch) toggle for low-light scanning - Full-frame detection (no aiming box) with multi-code support - Auto-select a camera so scanning starts without manual selection - Relax camera constraints (ideal instead of exact) for mobile robustness - Fix a bug where the native <video> element was not rendered before scanning started, making the play button unresponsive
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matmair
reviewed
Sep 4, 2026
The videoConstraints.facingMode override in the legacy html5-qrcode path replaced the selected camera ID entirely, so selfie/front cameras could not be used. Remove the facingMode preference from both scan paths and rely on the camera selector, which already auto-selects the rear camera when available.
SchrodingersGat
approved these changes
Sep 5, 2026
SchrodingersGat
added
barcode
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Use the browser-native BarcodeDetector (Shape Detection API) for camera barcode scanning when available, falling back to html5-qrcode. Native decoding is hardware-accelerated and far more robust to low light, blur and small codes than the pure-JS software decoder.
Also: