Convert YAML and JSON

Paste YAML to get JSON, or JSON to get YAML: the text decides the direction, not you. The result updates as you type and never leaves your device.

Your text stays on your device: nothing is uploaded

YAML or JSON

0 characters

Indentation

Sort keys alphabetically

Comments and the original punctuation do not survive the conversion: the values do.

Result

Paste something on the left: the result appears as you type.

Need this too?

Format JSONIndent, minify and validate. If it is broken, it says where.Base64Encode and decode, accents included.

How it works

The text is read with the YAML 1.2 core schema, the one modern tools use: “no”, “on” and “off” stay words instead of becoming true and false, and a date stays the string you wrote. Anchors (“&name”) and merge keys (“<<: *name”) are expanded, because a “<<” key inside JSON means nothing to anyone. If the file holds several documents separated by “---” you get a list, and we say so, because that separator does not exist in JSON. What JSON cannot represent — binary data, sets, ordered maps, application tags, keys that are not text — is not converted at random: the conversion stops and tells you what stopped it and on which line. In the other direction strings are quoted where it matters, so a postcode like 01234 and a word like “no” come back identical. Comments do not survive: JSON has none, and no converter can invent them on the way back.

What you paste is never uploaded. Anywhere.

Not to a server of ours, not to a third party, never. The text you type stays in your browser’s memory: it is read, processed and shown here, and you copy it. There is no path that takes it elsewhere, because there is no server to send it to. You can paste something confidential.

Processed locallyThe computation happens on this page, using the browser’s own engine: no request goes out while you type.
Nothing to upload, nothing to wait forOther services send your file to a server and then send it back to you. Here the file never leaves: there is no upload to wait for.
No accountNo sign-up, no email, no daily limits to get around by paying.
Nothing to deleteOthers promise to delete what you paste after an hour. We have nothing to delete: it never reached us.

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