Docker Compose Validator
Validate Docker Compose files — YAML syntax, required fields, port mappings, and undefined depends_on / volume / network references.
Compose files often contain secrets (passwords, API keys) — this file stays in your browser and is never added to the shareable page URL.
About Docker Compose Validator
Docker Compose defines multi-container applications in a YAML file. Beyond YAML syntax and required fields, this validator catches the mistakes that pass a plain YAML check but break docker compose up: a depends_onthat names a service which isn’t defined, and a service volumes: or networks:reference that isn’t declared at the top level. It also accepts real port syntaxes (host-IP bindings and ranges like 127.0.0.1:8080:80 and 8000-8010:8000-8010), flags the deprecated version key, and reformats the file. Everything runs locally in your browser. Compatible with Compose v2 and the Compose Specification.
Private & free — this tool runs entirely in your browser.