DocumentationOverview
PostHog Debugger documentation
Start with a clean capture
PostHog Debugger is an unofficial browser DevTools extension for inspecting PostHog configuration, events, identity, flags, replay state, and network delivery. Open the PostHog DevTools panel, then reload the page you are inspecting before reproducing a flow.
Install PostHog Debugger for Chrome and compatible Chromium browsers or Firefox, or review the product overview before choosing a workflow.
Use these guides
Follow Getting started for the first capture workflow. Use the PostHog debugging tools comparison to choose among browser Network tools, the official PostHog Toolbar, and PostHog Debugger, or follow the PostHog events not showing checklist when expected activity is missing.
The panel reference explains each DevTools surface, while detection limits and troubleshooting and privacy explain how to interpret missing data and handle local debugging data safely. Read the full privacy policy, review the source on GitHub, or check the complete changelog for shipped behavior.
- Get started with PostHog Debugger — Install PostHog Debugger, open its DevTools panel, and capture your first PostHog activity.
- PostHog debugging tools: Network, Toolbar, and PostHog Debugger — Compare browser Network tools, the official PostHog Toolbar, and PostHog Debugger across setup, payloads, SDK state, identity, flags, and delivery diagnosis.
- PostHog Debugger panel reference — Use the Config, Events, Network, Flags & Session, Identity, Autocapture, and Lint views in PostHog Debugger.
- What PostHog Debugger can detect — Understand the PostHog requests and SDK state the extension can inspect, along with its important limits.
- PostHog events not showing? A browser debugging checklist — Find where missing PostHog browser events stop, from SDK initialization and payload delivery to project configuration and ingestion.
- Troubleshooting and privacy — Resolve common capture problems and understand how PostHog Debugger handles inspected data.