JSON ↔ YAML Converter

Notes on the conversion

• YAML is parsed with the YAML 1.2 core schema (js-yaml, MIT). That means yes/no/on stay strings and are not turned into booleans, which avoids the classic "Norway problem".
• A YAML file with several documents separated by --- becomes a JSON array with one item per document.
• Comments and anchors do not survive the trip to JSON, because JSON has no way to express them. Anchors and aliases are expanded into copies.
• Strings that would be misread (for example "08" or "true") are quoted in the YAML output.

FAQ

Why does my GitHub Actions "on:" key look odd?

In YAML 1.1, the bare word on could mean true. This converter uses YAML 1.2 rules, so on: stays the string key "on", which is also how GitHub reads it.

Is the data sent to a server?

No, the conversion happens in your browser.