Chromatic is a visual testing and UI review platform built by the creators of Storybook that automates the process of catching visual regressions in web applications. It solves the problem of unintended visual changes slipping into production by capturing pixel-perfect screenshots of every component story and comparing them against approved baselines on each pull request. Chromatic runs tests in cloud browsers to ensure consistent rendering and eliminates the infrastructure burden of maintaining visual testing pipelines locally.
Chromatic provides automatic screenshot capture for every Storybook story across multiple browser engines and viewport sizes, an AI-powered anti-flake system that filters out false positives caused by rendering inconsistencies, and a collaborative review workflow where teams can approve or reject visual changes directly in the Chromatic UI. It also offers interaction testing that verifies component behavior through Storybook play functions, accessibility checks, and a TurboSnap feature that intelligently identifies and tests only the components affected by code changes to reduce build times.
Chromatic is designed for frontend teams maintaining design systems, component libraries, and UI-heavy applications where visual consistency is critical. It integrates natively with Storybook, GitHub, GitLab, Bitbucket, and popular CI/CD platforms, providing pull request status checks and review links directly in the development workflow. Chromatic is particularly valuable for teams where designers and developers collaborate on UI changes, offering a shared visual review process that catches regressions before they reach users.