YAML Validator

It parses your input with the js-yaml safe loader and reports the first syntax error, bad indentation, a mis-nested mapping, an unclosed quote, with the line and column. It also counts documents, so multi-document streams separated by '---' are validated as a whole, and shows the parsed result as JSON.

No. Validation runs entirely in your browser, nothing is sent to a server. As an EU-built, EU-hosted provider, Uptimeify keeps your workflow off US infrastructure and clear of US Cloud Act exposure, which matters for agencies handling client data under GDPR.

A single bad indent can break a CI pipeline, a Docker Compose stack or a Kubernetes deploy. Validate configs here first, then let Uptimeify monitor what they deploy, so if a rollout still goes wrong, you hear about it from us before your clients do.