LocalLens — On-Device, Privacy-First AI Browser Automation Extension
This is a submission for the Hacktoberfest Weekend Challenge: Build for a Friend What I Built I built LocalLens , a privacy-first, on-device AI browser extension (MV3) that turns natural language instructions into precise web browser actions—without sending raw page content, screenshots, or sensitive data to remote cloud servers. I built it specifically for my friend Ankit , who regularly…
LocalLens is a privacy-first, on-device AI browser automation extension that processes natural language instructions into precise web browser actions without sending raw page content or sensitive data to remote cloud servers. Developed for a friend who required an intelligent web assistant to automate repetitive tasks while handling sensitive personal credentials, student records, and API keys, LocalLens uses client-side WebGPU and local open-source AI to run visual perception, text extraction, and PII redaction directly inside the browser.
The extension employs a hybrid local execution pipeline consisting of client-side perception, a local agent planner, and an execution engine, ensuring complete privacy, zero API costs, model swappability, and offline capability.
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