YAML, JSON, and TOML are the three most popular data serialization formats for configuration files. JSON is ubiquitous in web APIs and JavaScript ecosystems. YAML is preferred for Kubernetes manifests, Docker Compose files, and CI/CD pipelines (GitHub Actions, GitLab CI) due to its readability. TOML is growing in popularity for project configuration files (Cargo.toml, pyproject.toml, Hugo). This converter lets you seamlessly translate between all three formats, making it easy to migrate configurations or compare syntax differences.