Docker Visualizer — Validate and Diagram Your Compose YAML
If you work with Docker Compose, you’ve stared at a wall of YAML trying to trace which service depends on which, where each volume mounts, and whether your configuration is actually correct. The larger the file gets, the harder it is to hold the whole architecture in your head.
Docker Visualizer is a free tool that solves exactly that — paste your docker-compose.yml and it renders every service, volume, network, and dependency as an interactive flow diagram.
What It Shows
The tool reads your Docker Compose YAML and builds a visual graph:
- Services — each service appears as a node with its image, ports, and environment variables
- Volumes — named and bind-mounted volumes are shown with their container mount points
- Networks — which services are connected to which networks
- Dependencies —
depends_onlinks are drawn as directional arrows so you can trace the startup chain - Errors — syntax issues, indentation problems, and invalid fields are highlighted before you ever run
docker compose up
Why It’s Useful
A visual diagram tells you in seconds what reading YAML takes minutes to confirm:
- Onboarding — hand a new teammate the diagram instead of walking them through every
docker-compose.override.yml - Debugging — when a service won’t start, trace its dependencies and volume mounts visually instead of grepping through files
- Reviewing — a PR changes the YAML? Paste both versions and spot the difference in the diagram
Try It Now
No sign-up, no installation, nothing leaves your browser. Just paste your YAML and see the diagram.
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