Does it produce valid YAML?

Yes. js-yaml produces spec-compliant YAML 1.2 output, validated before download.

Are comments preserved?

No. JSON does not support comments, so none can be carried over to the YAML output.

Yes. Choose 2 or 4 spaces in the options panel.

JSON null becomes YAML null (displayed as '~' or 'null').

Yes. Use the paste tab for quick inline conversions.

DATA

Convert JSON to clean, human-readable YAML — perfect for configuration files, CI/CD pipelines, and Kubernetes manifests. Browser-only.

Files never uploadedInstant conversionNo account needed

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1Drop your JSON file onto the converter above, or click to browse and select a file.
2Adjust any conversion options such as output format, quality, or delimiter settings.
3Click the Convert button. The file is processed instantly in your browser.
4Download your converted YAML file. Your original file is unchanged.

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Your files never leave your device. All processing happens in your browser using WebAssembly.

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No upload wait times, no server queues. Conversion starts immediately and completes in seconds.

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Single-file conversion is always free with no account required. Upgrade for batch processing and more.

Does it produce valid YAML?: Yes. js-yaml produces spec-compliant YAML 1.2 output, validated before download.
Are comments preserved?: No. JSON does not support comments, so none can be carried over to the YAML output.
Can I control indentation?: Yes. Choose 2 or 4 spaces in the options panel.
What about null values?: JSON null becomes YAML null (displayed as '~' or 'null').
Can I paste JSON directly?: Yes. Use the paste tab for quick inline conversions.