Validate Docker Compose Online — YAML Structure Checker
Parse Compose YAML and check services structure. Not a full Compose spec validator.
Developer notes
• Rejects YAML multi-document streams (---). • Does not validate ports, networks or deploy keys against the spec. • Unknown top-level keys are info only. • Pair with beautify-yaml for formatting.
When teams pick this route
• Validate a compose snippet from Stack Overflow before paste into repo. • Ensure services: exists in a generated file. • Quick check on a minimal dev stack (web + db). • Catch duplicate-document mistakes in merged YAML.
Worked examples
Valid dev stack with web + redis
Compose YAML
Validation result
Missing services key
Compose YAML
Validation result
Navigate related DevOps tools
Format YAML with beautify YAML. Container images: lint Dockerfile.
Compose validator FAQ
Structural checks
Full Compose spec validation?
No — we check YAML shape and common mistakes, not every key against the spec.
Compose v2 without version?
Root must still be a mapping with services for this tool to pass.
Multi-document YAML?
Rejected — Compose files should be a single document.
More DevOps tools in this cluster
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