# Docker Compose validator — no upload

> Validate a docker-compose.yml: check YAML syntax and common structural issues in your browser. Nothing is uploaded — the file stays in the tab.

Paste a docker-compose file to validate its YAML and flag common structural problems in the services, networks, and volumes. Validation happens in the browser, so nothing is uploaded.

A malformed compose file fails only when you try to run it, often with a cryptic error. Validating the YAML and structure up front surfaces the typo or misindentation immediately.

Generate a matching Dockerfile with the Dockerfile generator, and format standalone YAML with the YAML formatter.

## How to

1. **Paste compose YAML.** Paste your docker-compose.yml.
2. **Validate.** Syntax and common structural issues are checked.
3. **Fix & copy.** Correct any flagged problems and copy it back.

## FAQ

### What does it check?

Valid YAML plus common Compose structure — that services, ports, volumes, and networks are shaped correctly — catching mistakes before you run it.

### Does it run my containers?

No. It's a static validator for the file; it doesn't execute Compose or pull images, so it's safe and instant.

### Is my file uploaded?

No. Validation happens in the browser, so the compose file stays local.


## Related tools

- [Dockerfile](https://www.safepaper.app/dev/dockerfile-gen)
- [YAML formatter](https://www.safepaper.app/dev/yaml-formatter)
- [K8s secret decode](https://www.safepaper.app/dev/k8s-secret)
- [.env manager & diff](https://www.safepaper.app/dev/env-manager)

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Canonical HTML: https://www.safepaper.app/dev/docker-compose
Markdown: https://www.safepaper.app/dev/docker-compose.md

There is no upload endpoint — your files are processed in this browser tab. Open your network tab and check.