Is the document uploaded?

Not from this page. The JSON API formats a document for a script and does not store it.

Will YAML anchors be expanded?

Yes. The parser resolves the document and prints the result. Comments are not kept.

Tools · DevOps

JSON and YAML formatter

Paste JSON or YAML. The page checks it and shows an indented copy, in the browser. Invalid documents show the parser error.

Formatting happens in this browser. The document is not uploaded and it is not stored.

How to use it

Paste the document. Leave the format on auto unless you want to force JSON or YAML.
Read the indented result, or the error on the first problem.
Do not paste secrets you would not want on screen. The document is not sent from this page.

Questions

Is the document uploaded?: Not from this page. The JSON API formats a document for a script and does not store it.
Will YAML anchors be expanded?: Yes. The parser resolves the document and prints the result. Comments are not kept.
How large a document can I paste?: Up to 100 000 characters.

An automated client can POST JSON to /api/tools/json-yaml with the fields listed in the OpenAPI document. The OpenAPI document is at /api/tools, with a short guide at /llms.txt. Nothing submitted is stored.