๐โ๐ YAML to JSON
Convert YAML to JSON free online. Handles nesting, lists and anchors. Ideal for Kubernetes, CI and config files. No upload.
๐โ๐ YAML to JSON
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About the YAML to JSON Tool
YAML dominates configuration โ Kubernetes manifests, GitHub Actions workflows, Docker Compose files, Ansible playbooks. It is pleasant to write because indentation replaces brackets, but that same indentation sensitivity makes it easy to get subtly wrong, and hard to inspect programmatically.
Converting to JSON gives you an explicit, unambiguous representation of exactly what your YAML parses to. That is frequently the fastest way to discover that a value you thought was a string is actually a boolean, or that a block is nested one level deeper than intended. Conversion runs in your browser, so configuration containing secrets stays local.
How to Use YAML to JSON
- Paste your YAML configuration into the input area.
- Press Convert to parse it into JSON.
- Inspect the JSON to verify the structure matches what you intended.
- Copy the output for use in tooling that expects JSON.
When to Use This Tool
- Verifying that a Kubernetes manifest parses to the structure you expect
- Converting a CI/CD workflow file for programmatic inspection
- Feeding YAML configuration into a tool that only accepts JSON
- Debugging indentation problems by seeing the resulting structure explicitly
- Migrating configuration between systems with different format preferences
Things Worth Knowing
- YAML is a superset of JSON, so every valid JSON document is also valid YAML.
- YAML comments are lost in conversion โ JSON has no comment syntax.
- Watch for implicit typing: unquoted yes, no, on, and off are parsed as booleans in YAML 1.1.
Quick Facts
| Tool name | YAML to JSON |
| Category | Data Converters |
| Price | Free โ no account, no trial, no watermark |
| Where it runs | Entirely in your browser (client-side) |
| Files uploaded | None โ your data never leaves your device |
| File size limit | None imposed; limited only by device memory |
| Works offline | Yes, once the page has loaded |
| Platforms | Windows, macOS, Linux, Android, iOS |
Frequently Asked Questions
Why does my YAML string become true or false?
YAML 1.1 implicitly types unquoted yes, no, on, off, true, and false as booleans. This famously affects country codes โ the value NO for Norway becomes false. Quote the value to force it to stay a string.
Are YAML anchors and aliases supported?
Yes. Anchors and references are resolved during parsing, so the JSON output contains the fully expanded structure.
What happens to my comments?
They are discarded. JSON has no comment syntax, so there is nowhere for them to go.
Can I convert JSON back to YAML?
Yes, using the JSON to YAML tool. Note the round trip will not restore comments or original formatting.