PostHog's frontend library ( posthog-js ) uses (record and replay the web) under the hood. It records mutations to the DOM, mouse movements, scroll events, and console logs, bundling them into JSON payloads.
In digital analytics, portability refers to the ease with which data and software engines can be moved, exported, or self-contained. For PostHog Session Replay, portability translates into three core capabilities:
You deploy a lightweight Go, Node.js, or Nginx proxy directly on the user's local machine alongside your application. The posthog-js SDK points to this local proxy ( http://localhost:3000 ). posthog session replay portable
Session recordings generate massive amounts of data because they capture every DOM change and mouse movement. If left unchecked, a portable application running offline for a week can consume gigabytes of a user's local hard drive.
Mastering User Insights Anywhere: The Ultimate Guide to PostHog Session Replay Portable PostHog's frontend library ( posthog-js ) uses (record
: Individual replays can be shared via direct links or organized into collections for internal reviews. Integration Flexibility
Defense, healthcare, and banking applications often operate on networks with zero internet access. Portable session replay allows these teams to debug user interfaces without violating strict data isolation policies. If left unchecked, a portable application running offline
posthog.init(' ', api_host: 'http://localhost:8080', session_recording: // Mask all input fields across the app maskAllInputs: true, // Block specific high-risk DOM elements entirely maskTextSelector: '.sensitive-data, [data-private]' ); Use code with caution. Conclusion