Convert YAML to JSON
Free · no signup · no watermark · runs in your browser · batch up to 20 files
Drop your YAML files here
or click to choose — up to 20 at once
Select YAML 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 YAML to JSON converter turns your .yaml files into .json files. YAML is what configuration is written in now — Docker, Kubernetes, CI pipelines — because it is readable by people as well as machines.
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 YAML to JSON
- Drop your YAML 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 YAML to JSON
Both formats can represent the same content here, so nothing meaningful is lost. Expect the file size to change, since YAML and JSON compress differently.
YAML and JSON compared
| YAML | JSON | |
|---|---|---|
| Full name | YAML Ain't Markup Language | JavaScript Object Notation |
| Extension | .yaml, .yml | .json |
| MIME type | application/yaml | application/json |
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.
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.
Frequently asked questions
How do I convert YAML to JSON?
Drop your .yaml file onto the box on this page and the .json 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 YAML to JSON 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 JSON reduce the quality?
Both formats can represent the same content here, so nothing meaningful is lost. Expect the file size to change, since YAML and JSON compress differently.
Can I convert several YAML 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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