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Automated e2e screenshot testing without writing or maintaining tests
Meticulous is a tool to automatically catch UI bugs in your web application with zero-effort. Install our JavaScript snippet onto production or staging and dev environments, which records user sessions by collecting clickstream and network data. When you post a pull request, Meticulous selects a subset of sessions which are relevant and simulates these against the frontend of your application. Meticulous takes screenshots at key points and detects any visual differences. It posts those diffs in a comment for you to inspect in a few seconds. This eliminates the setup and maintenance burden of UI testing.
Meticulous AI provides automated frontend end-to-end testing that requires no writing or maintaining tests. It records user interactions, generates an evolving AI-driven test suite, and can mock backend responses to enable deterministic, fast, and flaky-free test runs across complex codebases.
Add a recorder script tag to local development, staging, and preview environments (with optional production recording). The AI engine watches recorded sessions to continuously generate a test suite that covers user flows and edge cases, expanding as the app evolves. On pull requests, it can mock backend responses to run side-effect-free tests, allowing integration with CI. Tests run in parallel on a compute cluster, enabling thousands of screens to be tested with results in under 120 seconds. Works with existing test suites or as a replacement, and supports Next.js, React, Vue, Angular, Nuxt, SvelteKit, and multiple frameworks via a provided integration for CI.
Who it’s for: Engineering teams and frontend developers working on complex web applications who want automated, maintenance-free E2E testing with fast feedback and deterministic results.
Customers: Dropbox, Notion, Engine
Hiring and active product messaging with multiple customer logos mentioned; references to demo signups and careers indicate growth and ongoing development.
Working on software to catch bugs in web applications with zero-effort from developers. I used to be a software engineer at Opendoor and Dropbox.
Create end-to-end tests without writing (or maintaining) code
Meticulous is a CLI tool to create end-to-end tests without writing code, using record, simulate, and test commands to capture user actions, replay them on a URL, and compare visual snapshots for failures. It stores tests in meticulous.json and offers an option to automatically mock network calls to isolate frontend behavior.
From the original launch (Jul 2022) — may be outdated.

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