Posthog Session Replay Portable Updated Jun 2026

But what does "Portable Session Replay" actually mean? And why does it matter more than navigator.sendBeacon ?

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The system works completely offline and doesn't require PostHog cloud services, making it truly portable. posthog session replay portable

PostHog keeps your recent sessions hot for analysis. But what about sessions from 18 months ago? You might not need to watch them, but legal compliance might require you to retain them.

This implementation provides:

The most "portable" version of PostHog session replay is the self-hosted instance. By running PostHog on your own infrastructure (via Docker or Kubernetes), the data never leaves your control. If you need to move your entire analytics suite from AWS to Google Cloud or an on-premise server, your session replays move with you because you own the database. Portability vs. Privacy

this.addEvent('scroll', scrollX: window.scrollX, scrollY: window.scrollY, ); But what does "Portable Session Replay" actually mean

If you want to tailor this setup to your specific tech stack, tell me:

PostHog stores replays as a series of "snapshots" (JSON data representing DOM mutations, mouse movements, inputs, etc.). You can export this raw data via the API. PostHog keeps your recent sessions hot for analysis

snapshots = recording['snapshot_data']