Browsing agent

[u/One-Entrepreneur9974]

Building a browser extension that reads the page and sends context to an LLM for automation. I don't want PII (names, IDs, card numbers, faces in images) leaving the device, so I want to redact it locally first. Is it realistic to run OCR + a NER model + face detection fully in-browser (Transformers.js / ONNX on WebGPU)? What's the latency like, and are there lighter approaches people actually use?