Convert JSON to YAML
Free · no signup · no watermark · runs in your browser · batch up to 20 files
Drop your JSON files here
or click to choose — up to 20 at once
Select JSON fileThis runs entirely in your browser. The file never leaves your machine and nothing is uploaded. Need test files? Try our free sample files.
This free JSON to YAML converter turns your .json files into .yaml files. JSON is what web APIs speak. It nests, it has real types, and spreadsheets cannot read it.
This conversion runs entirely in your browser. The file is never uploaded, which makes it instant, private and usable on work files you would not want to send to a stranger's server.
How to convert JSON to YAML
- Drop your JSON files onto the box above, or click it to choose from your computer. Up to 20 at once.
- The conversion starts as soon as the file is read — there is nothing to configure.
- Download each converted file, or pick them up one by one from the list.
What changes when you convert JSON to YAML
Both formats can represent the same content here, so nothing meaningful is lost. Expect the file size to change, since JSON and YAML compress differently.
JSON and YAML compared
| JSON | YAML | |
|---|---|---|
| Full name | JavaScript Object Notation | YAML Ain't Markup Language |
| Extension | .json | .yaml, .yml |
| MIME type | application/json | application/yaml |
JSON: The default interchange format for web APIs. Supports nesting, arrays and real types, which CSV does not, so converting between the two means deciding how to flatten or rebuild structure.
YAML: A human-readable superset of JSON used for configuration almost everywhere — Docker, Kubernetes, CI pipelines. Indentation is significant, which is both the appeal and the usual source of errors.
Frequently asked questions
How do I convert JSON to YAML?
Drop your .json file onto the box on this page and the .yaml file is ready to download in a second or two. There is no signup, no email, no watermark and no file limit beyond what your browser can hold in memory.
Is this JSON to YAML converter free?
Yes, completely, with no account, no trial and no watermark on the output. We are a consultancy and these tools exist because we needed them ourselves; there is nothing to buy on this page.
Are my files uploaded anywhere?
No. This conversion runs entirely in your browser using JavaScript, so the file never leaves your computer. You can disconnect from the network after the page loads and it will still work.
Will converting to YAML reduce the quality?
Both formats can represent the same content here, so nothing meaningful is lost. Expect the file size to change, since JSON and YAML compress differently.
Can I convert several JSON files at once?
Yes, up to 20 files in one go. Drop them all onto the box together and each one appears in the results list with its own download button.
Found a problem, or something that could be better? We read every message and we fix things quickly.
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