YAML Validator

Validate yaml online with schema support for Kubernetes, Docker Compose, GitHub Actions. Linter and formatter in one tool.

🔧 Validate configuration files against 11 official schemas with automatic detection. This browser-based validator helps you catch errors before deployment with schema validation supporting Kubernetes, Docker Compose, and CI/CD pipelines. ✨ New in Version 1.1 - Schema validation across 11 platforms with auto-detection - GitHub code folding to browse large config files - Open in Tab mode enabling full-screen editing - Dark mode support with system theme detection - Error line highlighting with click-to-jump navigation 📋 Supported Schemas Validate configurations online against official specifications: 1️⃣ Kubernetes v1.29 - k8s manifest validator supporting Deployment, Service, Pod, ConfigMap, Ingress, StatefulSet, DaemonSet, CronJob and 20+ resource types 2️⃣ Docker Compose v2.29 - container orchestration checker with full spec support 3️⃣ GitHub Actions - workflow validator enabling CI/CD automation 4️⃣ GitLab CI - pipeline checker supporting .gitlab-ci.yml configurations 5️⃣ CircleCI - build configuration validator supporting config.yml files 6️⃣ Azure Pipelines - devops workflow checker with full schema support 7️⃣ Bitbucket Pipelines - pipeline configuration validator 8️⃣ Ansible - playbook automation script checker 9️⃣ Helm Charts - Chart.yaml package management validator 🔟 OpenAPI 3.0 - REST API specification checker ⬛ Swagger 2.0 - API spec validator 🎯 Smart Error Detection The extension automatically detects which schema applies to your content: ▸ Paste code and the matching schema is detected instantly ▸ Error line highlighting shows exact problem location ▸ Multi-document support with --- separators ▸ Schema mismatch suggestions with one-click fix 📂 GitHub Code Folding Browsing config files on GitHub? This extension adds a folding button: • Collapse and expand sections on any GitHub repository page • Navigate large configuration files with ease • Works with any .yaml or .yml file on GitHub • Toggle folding with a single click 💡 Key Features ➤ Syntax checker providing instant feedback on your code ➤ Linter identifies structural and semantic issues early ➤ Formatter keeps code clean and readable ➤ Schema validation against official specifications ➤ Kubernetes manifest checker supporting k8s deployments ➤ Docker compose syntax validator before running containers 🚀 Built to Support DevOps Engineers Designed to help developers, sysadmins, and DevOps professionals: 1. Kubernetes validation - check k8s manifests before kubectl apply to prevent failures 2. Docker compose verification - catch config errors before docker compose up 3. CI/CD pipeline validation - GitHub Actions, GitLab CI, CircleCI, Azure Pipelines support 4. API spec checking - OpenAPI and Swagger validation supporting REST APIs 5. Infrastructure as Code - Ansible playbook and Helm chart configuration support 📝 How to Use This Extension - Click the extension icon in your browser toolbar - Paste your code into the editor area - Schema is auto-detected or select manually from dropdown - Click Validate button to check syntax and schema compliance - Errors are highlighted with line numbers enabling quick navigation 🌐 Browser-Based Configuration Validator Online Check configuration files directly in your browser with no external tools: ◆ Works completely offline after installation ◆ No data transmitted to external servers ◆ Your configuration code remains fully private ◆ Dark mode theme enabling comfortable editing sessions ◆ Open in Tab provides expanded workspace when editing larger files ◆ Persistent storage saves your work between sessions 🔍 Linting and Formatting Capabilities Comprehensive code quality features included: ▪ Detect syntax errors instantly as you type ▪ Check structure against json schema specifications ▪ Format code to improve readability and consistency ▪ Verify configuration structure before deployment ▪ Multi-document parsing supporting complex configuration bundles ⚡ Cross-Platform Configuration Checking Supports configurations across multiple platforms and environments: • Kubernetes manifest validation supporting cloud-native apps and microservices • Docker compose checker enabling container orchestration • GitHub actions validator supporting continuous integration pipelines • Gitlab ci linter enabling automated build and deploy processes • Circleci config checking supporting cloud-based build automation • Ansible playbook validation enabling infrastructure automation ❓ Frequently Asked Questions Q: Does this extension work offline? A: Yes, after installation all validation happens locally in your browser. Q: Is my code sent to any server? A: No, your configuration remains completely private on your device. Q: What Kubernetes version is supported? A: Currently supports Kubernetes v1.29 with 23 resource types. ✅ Download this configuration file checker to validate manifests, pipelines, and specs. Supports kubernetes validation, docker compose checking, and 11 schema types with instant error detection.