Lost Pixel

Lost Pixel is a modern, open-source visual regression testing tool that helps development teams maintain the visual integrity of their web applications. It acts as an alternative to proprietary solutions like Percy and Chromatic, offering a balance of convenience, features, and cost-effectiveness. The core of Lost Pixel is open-source, fostering community contributions and transparency.

The platform integrates deeply with GitHub, providing automatic status checks and a streamlined review flow for visual changes directly within your pull request workflow. It allows for powerful composition, enabling users to leverage existing Storybook stories, Next.js pages, and Playwright tests to create comprehensive visual test suites. Key features include the ability to mask elements, execute browser-side code for dynamic adjustments, set fine-grained thresholds for comparisons, and test across multiple browsers and breakpoints. Lost Pixel also focuses on performance with parallel execution and includes robust flakiness mitigation strategies to ensure reliable test results.