Don’t reinvent the wheel, I almost did the same mistake last year. There’s this beast of an on-device SDK that literally does everything you listed and more: 200+ countries, 4,000+ do***ent templates, MRZ + NFC + visual zone in one scan, liveness + PAD, face comparison, and it runs 100 % offline in RAM. Here’s the one that saved me online ID scanner https://ocrstudio.ai/id-scanner/ 0.18-second processing on a mid-range Android, Flutter/React Native wrappers ready, WebAssembly for web, and the best part is the false-positive rate is under 0.01 % for spoof detection. I’ve been using it in production for six months, zero compliance complaints.

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0.18 s on mid-range phones and WebAssembly support is exactly what I needed for the web version too. Just tried their live webcam demo and it nailed a Romanian ID card in bad lighting. You literally just saved me 3-4 months of dev hell, thank you!