JSON to YAML Converter
Convert verbose, bracket-heavy JSON into clean, indentation-based YAML that's far friendlier to read and to keep under version control — perfect for config files and CI pipelines.
Why convert JSON to YAML
JSON and YAML describe the same kinds of data — maps, lists, strings, numbers, booleans — but they look very different. JSON leans on braces, brackets and quotes; YAML uses indentation and is much lighter on punctuation. For anything a human edits regularly, like a config file, the YAML form is usually far more pleasant to live with.
This converter parses your JSON into a value and serialises it back out as YAML with two-space indentation. Objects become mappings, arrays become block sequences with dashes, and scalar values are written without unnecessary quotes wherever YAML allows it.
It's the quick way to take a JSON sample from an API or a tool and turn it into the docker-compose.yml, Kubernetes manifest, or GitHub Actions workflow style that those ecosystems expect.
Convert JSON to YAML
- 1
Paste your JSON
Add the JSON you want to convert into the input pane, or load the sample to try it.
- 2
Get YAML instantly
Indentation-based YAML appears on the right as soon as the JSON is valid.
- 3
Copy or download
Copy the YAML into your config, or save it as a .yaml file.
Where YAML wins
Human-friendly configs
Less punctuation and no closing brackets makes YAML easier to scan and hand-edit than the equivalent JSON.
Cleaner diffs
Line-oriented YAML tends to produce smaller, clearer git diffs when a single value changes.
Comments become possible
JSON forbids comments; YAML allows them, so once converted you can annotate your config inline.
Native to DevOps tools
Compose, Kubernetes, Ansible and most CI systems expect YAML, so converting saves a manual rewrite.
A worked example
A nested JSON object on the left, the YAML equivalent on the right.
{
"service": "web",
"ports": [80, 443],
"env": { "DEBUG": false, "REGION": "us-east-1" }
}service: web
ports:
- 80
- 443
env:
DEBUG: false
REGION: us-east-1What changes and what stays the same
- The data is identical — only the syntax changes. Keys, values, ordering and types are preserved.
- Strings that YAML can leave unquoted are written without quotes for readability; ambiguous ones stay quoted.
- Nested objects become indented mappings and arrays become dashed block lists.
- JSON has no comments to carry over, but you're free to add YAML comments to the result afterward.
Frequently asked questions
Close — YAML is a superset of JSON in practice, so any JSON can be expressed as YAML. The data model is the same; YAML simply offers a more readable, indentation-based way to write it.
YAML only needs quotes when a value would otherwise be ambiguous — for example something that looks like a number, boolean, or contains special characters. Plain strings are left unquoted to keep the output clean.
Yes. The keys are emitted in the same order they appear in your JSON, so the structure you see mirrors the input.
Yes. YAML and JSON are interchangeable, so you can round-trip the data. A YAML beautifier or parser will turn it back into JSON when a system needs that format.
It produces standard YAML suitable for those tools. Paste the JSON form of your config and you'll get YAML you can drop into a manifest or compose file, then tweak as needed.
No. Parsing and YAML serialisation run in your browser, so secrets in a config file stay on your machine.
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