Docker Toolkit
Validate, lint, format, and visualize Docker Compose files and Dockerfiles — four tools covering the whole Docker workflow. All run entirely in your browser.
How these fit together
Docker Compose Validator catches the mistakes that only normally surface at docker compose up — undefined services, invalid ports, undeclared volumes/networks — and Dockerfile Linter does the same for the image build itself: unpinned tags, missing USER, and other best-practice gaps. Docker Compose Formatter cleans up indentation while preserving comments, and Docker Compose Visualizer turns the file into a diagram of service start order, networks, and volumes — the fastest way to actually see how a multi-service stack fits together instead of tracing YAML by eye.
Docker Compose Validator
Check a docker-compose.yml for undefined services, bad ports, and undeclared volumes/networks.
Dockerfile Linter
Check a Dockerfile for typos, unpinned tags, and common build-cache mistakes.
Docker Compose Formatter
Clean up inconsistent indentation in a docker-compose.yml, comments preserved.
Docker Compose Visualizer
See a docker-compose.yml's services, networks, volumes, and start order at a glance.