2 Open Source Alternatives To Percy

Lost Pixel is an open-source visual regression testing tool designed to catch visual bugs before your users do. It serves as an alternative to tools like Percy, Chromatic, and Applitools, providing a seamless integration with GitHub for quick and efficient UI testing.

• First Class GitHub Integration: Set up in minutes with automatic GitHub status checks for a smooth GitHub action experience.
• Power of Composition: Utilize your existing Storybook, Next.js, and Playwright to compose visual tests for a holistic view.
• Streamlined Review Flow: Offers a battle-tested visual testing flow suitable for projects of various sizes and stacks.
• Mask Elements: Ignore unneeded elements while comparing screenshots.
• Execute Browser Code: Adjust page CSS & HTML before taking screenshots. Hide elements, change texts - full control.
• Set Thresholds: Fine-grained control with absolute & relative thresholds per screenshot or globally.
• Multiple Browsers: Execute tests in multiple browsers to catch maximum visual regressions.
• Multiple Breakpoints: Test with various device widths to catch visual issues on different devices.
• Speedy Execution: Run tests in parallel to speed up your suite.
• Approval Flow: Approve, reject, and comment on screenshots in a user-friendly manner.
• Fight Flakiness: Retry flaky tests and use custom wait times and network utilities to enhance reliability.

Lost Pixel provides a modern, open-source solution for visual regression testing that balances convenience, features, and pricing. It enables engineering teams to ship frontend changes with confidence, ensuring that visual problems are caught early in the development cycle.

Argos is a powerful visual testing tool designed for developers to seamlessly integrate UI change reviews into their development workflow. By capturing and highlighting visual deviations, Argos ensures that your application's UI remains consistent and visually appealing throughout the development process.

• Detect Visual Regressions: Identify and prevent UI issues that could negatively impact user experience.
• Enhance Quality Assurance: Integrate visual checks to complement functional tests for comprehensive coverage.
• Streamline Development: Facilitate faster feedback and iteration by catching visual issues early.
• Scalability Refined: Argos integrates smoothly into your CI flow without the need to commit screenshots.
• Cross-Browser Testing: Capture visuals across every browser for thorough cross-platform testing.
• Responsive Design: Test across various resolutions to ensure every detail is captured.
• Screenshot Stabilization: Argos' technology halts animations to reduce false positives and ensure consistent rendering.
• Smart Baseline Detection: Automatically selects the optimal baseline branch for precise comparisons.
• Pull Request Comments: Summarize visual differences directly within your workflow.

Argos is built to be fast, reliable, and easy to integrate with popular testing frameworks like Playwright, Cypress, WebdriverIO, Storybook, Next.js, and Remix. Embracing community collaboration, Argos is 100% open source, offering a first-class developer experience with features like natural keyboard navigation, intuitive visual comparisons, and efficient difference grouping. Join our vibrant developer community and discover why Argos is the preferred visual testing tool for modern web applications.