JSON ↔ YAML
This free JSON ↔ YAML converter tool turns JSON into clean YAML, or parses YAML back into valid JSON, so you can move config and data between the two formats without hand-editing. Everything is converted on your device, so nothing you paste ever leaves your browser.
How to use JSON ↔ YAML
- 1 Paste or type your JSON or YAML into the input box, or load a .json/.yaml/.yml file.
- 2 Click JSON → YAML to convert one way, or YAML → JSON to convert the other.
- 3 Fix any syntax problem the tool flags, and it re-converts as you edit.
- 4 Copy the result or download it as a converted file — your data never leaves your browser.
Frequently asked questions
Is my JSON or YAML uploaded to a server?
No. The conversion runs locally in your browser with JavaScript, so your config and data stay on your device. That makes it safe for secrets, credentials or internal config files.
Can it convert in both directions?
Yes. Use the JSON → YAML button to turn JSON into YAML, and the YAML → JSON button to parse YAML back into valid JSON. Loading a .yaml file auto-converts it to JSON.
Why does my YAML or JSON show an error?
It means the input doesn't parse — commonly bad indentation or tabs in YAML, or a missing comma, quote or bracket in JSON. The tool reports the problem so you can correct it.
Does the converter work offline?
Yes. PDFPowerHub is a PWA, so once the page has loaded it keeps converting with no internet connection.