Convert JSON files to YAML free in your browser — no signup, no install, and the file is never uploaded to a server. YAML keeps full quality with no further loss.
Add your JSON file
Drag the JSON file onto the drop area above, or click it to pick a file from your device. You can add several files at once.
Confirm YAML as the output
YAML is already selected as the output format on this page. This format converts straight through with no extra settings.
Run the conversion
Press the convert button. Processing happens on your own device, so the time depends on your computer rather than a server queue.
Download the YAML file
When it finishes, download the YAML file. Converting multiple files gives you the option to download them together as a ZIP.
The de facto standard for exchanging data through web APIs. It is human-readable while remaining easy for programs to parse.
A data format that expresses structure through indentation, making it the easiest for humans to read and write. It is the standard for Docker, Kubernetes, and CI configuration.
Yes. JSON to YAML conversion is completely free with no signup, no watermark, and no daily limit on the free plan for ordinary use.
No. The conversion runs entirely inside your browser using WebAssembly, so the JSON file never leaves your device. That is also why it works without an internet connection once the page has loaded.
It can go either way. Both formats are lossless, so nothing is thrown away — the size difference comes from how each one packs the same data.
The free plan handles files up to 200MB. Because processing happens on your own device, very large files depend on your computer's memory rather than a server quota.
Data converter
What each file format is, what it is used for, and which formats it can be converted to.
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