Chromatic is a platform for testing and reviewing user interfaces. It runs visual, accessibility and interaction tests in real browsers and adds a UI review step to pull requests and CI pipelines. It is built for teams that develop components with Storybook and is delivered as a cloud service. Chromatic is made by the maintainers of Storybook and presents itself as the official Storybook platform.
The supplier is Chroma Software Inc.; its headquarters is in San Francisco. No European entity is named, and the public pages do not mention a European hosting option. Where test snapshots and source metadata are stored is not stated, so storage in the United States should be assumed. The site links to a SOC 2 Type 2 report but does not mention a GDPR statement or data processing agreement. A European organisation testing sensitive interfaces or unreleased products should therefore ask the supplier about processing terms and storage location. Storybook itself is open source; Chromatic as a service is not.