Convert JSON to clean, readable YAML
This JSON to YAML converter transforms objects, arrays, strings, numbers, booleans, and null values into correctly indented YAML. It is useful when an API exports JSON but a Kubernetes manifest, Docker Compose file, GitHub Actions workflow, Ansible playbook, or CI configuration expects YAML. Conversion runs entirely in your browser, so configuration data is not uploaded.
How to convert JSON to YAML
- Paste valid JSON or upload a
.jsonfile. - Select Run or press Control/Command + Enter.
- Review the generated indentation and YAML scalar values.
- Copy the YAML or download it for your project.
JSON to YAML example
A JSON object such as {"service":"api","replicas":3,"enabled":true} becomes:
service: api
replicas: 3
enabled: trueNested objects become indented mappings and JSON arrays become YAML sequences beginning with a dash.
What is preserved during conversion?
- Object keys and nested hierarchy
- Array order and nested array values
- Strings, numbers, booleans, and null values
- Unicode text and escaped JSON characters
JSON cannot contain comments, anchors, aliases, tags, or multi-document YAML streams, so a converter cannot create those features from the source automatically.
Common JSON to YAML conversion errors
The input must be valid JSON: property names require double quotes, trailing commas are invalid, and comments are not permitted. After conversion, review strings that resemble dates, numbers, or boolean values if the destination system applies its own YAML schema. Syntactically valid YAML is not automatically a valid Kubernetes or Docker Compose configuration.
JSON and YAML differences
JSON uses braces, brackets, commas, and quoted keys. YAML represents the same data primarily through indentation, making configuration files shorter and easier to scan. JSON is often preferred for APIs and machine exchange, while YAML is common in infrastructure and deployment workflows.
Frequently asked questions
Is this JSON to YAML converter private?
Yes. Conversion happens locally in your browser. The editor content is not uploaded to StringTo.
Can it convert arrays and nested JSON?
Yes. JSON arrays become YAML sequences, while nested objects become indented mappings.
Does valid YAML guarantee a valid Kubernetes manifest?
No. Kubernetes still requires valid apiVersion, kind, metadata, and resource-specific fields.
Are JSON comments preserved?
No. Standard JSON does not support comments, so there are no comments to transfer into YAML.