Sanity Check is a fully local browser extension.

The extension analyzes highlighted or pasted job descriptions using JavaScript executed entirely within the browser. No external APIs, analytics services, telemetry systems, remote scripts, or cloud services are used.

The extension stores user-configured preferences (wanted skills, avoided phrases, and warning phrases) locally using the browser storage API.

No user data, browsing activity, job descriptions, or personal information are transmitted outside the browser.

The source package uploaded is the exact code used by the extension and does not require a build step.