How I Built a Fast, Offline-First Gluten Detection PWA Using Web OCR & Open Food Facts

说明与用途

Glutensa 是一个轻量级的 PWA，使用条形码扫描和 OCR 快速、离线地检测食品中的麸质，具备本地缓存和 Open Food Facts 的后备查询。

问题

Consumers with gluten restrictions need instant, reliable ingredient information at the grocery store, but existing apps are slow or heavy.

结果

The app delivers fast, offline-first gluten detection with a local cache and seamless API fallback, improving user experience for dietary restrictions.

工作流

• Scan product barcode or capture label image
• Check local cached dataset for product info
• If not found, query Open Food Facts API
• Parse returned data and display gluten status
• Cache result locally for future use

证据

We first check an optimized local/cached dataset. If no match is found, the app seamlessly falls back to querying the Open Food Facts API

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