Meticulous

Meticulous records real user sessions and continuously generates visual end-to-end tests that replay those sessions against code changes to detect regressions and edge cases. It captures network responses, local storage, cookies and DOM interactions, then replays sessions deterministically to produce fast, side-effect-free test runs. Meticulous integrates with CI and preview deployments to surface visual diffs for pull requests and to validate changes before merge.

• Session recording — Use the recorder script tag or the recorder NPM package to capture user sessions in development, staging, or production environments.
• Auto-generated visual tests — Meticulous’s engine curates a test suite from recorded sessions so you don’t have to write or maintain tests manually.
• Deterministic replay & network stubbing — The platform records responses and stubs or selectively passes through requests to ensure deterministic, side-effect-free simulation during replays.
• CI integration — Trigger tests from CI pipelines or preview URLs to compare base vs head commits and surface visual diffs on pull requests.
• Parallel execution at scale — Tests run across a compute cluster with heavy parallelization to deliver results quickly for thousands of screens.

To get started, add the recorder script or NPM package to your app, record representative sessions, and connect Meticulous to your CI or preview deployments to run replay-based tests on pull requests.