YAML to JSON
Convert YAML data to JSON format
About the YAML to JSON (Browser)
This tool converts YAML to JSON in your browser so you can check what a manifest actually parses to. Nothing is uploaded, which matters when the file contains internal hostnames or credentials.
Converting YAML to JSON in the browser is how you verify a manifest without exposing it. Kubernetes files, CI pipelines and Ansible playbooks are full of internal detail, and pasting one into a hosted parser hands over your infrastructure layout.
Seeing the parsed JSON is the fastest way to confirm indentation did what you intended. YAML will happily accept a key nested one level too deep — perfectly valid, entirely wrong — and only the resulting structure makes that visible.
Anchors and aliases are resolved, block scalars keep their line breaks, and type inference follows the YAML spec so unquoted true becomes a boolean. Invalid YAML is reported with a line number, so this doubles as a local validator.
How to use the YAML to JSON (Browser)
- Paste your YAML. Provide the manifest or config — it stays in your browser.
- Parse locally. The conversion runs on your machine.
- Check the structure. Confirm each key sits under the parent you intended.
- Copy the JSON. Take the output, or fix the reported error.
YAML to JSON (Browser) features
- Parsing entirely in your browser
- Anchors and aliases resolved
- Block scalars and multi-line strings handled
- Spec-compliant type inference
- Errors reported with a line number
- Safe for manifests containing internal detail
Frequently asked questions
Is my manifest uploaded?
No. Parsing happens entirely in your browser, so internal hostnames and credentials stay local.
Can I use this to validate YAML?
Yes. Invalid YAML fails to parse and the error is reported with a line number.
My YAML parses but a setting is ignored. Why?
A key indented too far becomes a child of the wrong parent. The JSON output makes the real hierarchy obvious.
Are anchors and aliases supported?
Yes, and they are resolved so referenced blocks appear expanded in the output.
Does it handle multiple documents in one file?
The first document is converted. Split on --- and convert each separately.