Replay

Traditional debugging requires reproducing bugs in real time, which is often difficult or impossible for intermittent issues, race conditions, and production failures that depend on specific timing or data conditions.

Replay eliminates this reproduction requirement by capturing a complete, deterministic recording of the original execution that can be explored at any pace and from any point in time.

The platform's browser-native recording captures JavaScript execution in web applications with frame-by-frame precision, allowing developers to inspect DOM state, JavaScript values, network requests, and console output at any moment during a recorded session.

Collaborative debugging features allow recordings to be shared with teammates who can annotate specific moments, add comments, and discuss the debugging investigation asynchronously making bug triage a team activity that doesn't require everyone to be simultaneously available to reproduce the issue together.

Production recordings capture bugs as they occur in real user sessions, providing debugging data from the actual environment where failures happen rather than from developer workstations where conditions may differ.

Replay integrates with CI/CD pipelines to automatically record failing test runs, giving developers a Replay recording alongside the test failure report making CI failures dramatically easier to debug by providing the full execution context rather than just log output and stack traces.

This integration addresses one of the most frustrating parts of software development: flaky tests and CI failures that are difficult to reproduce locally and that consume hours of debugging effort trying to recreate conditions.