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convertexa

JSON → YAML

JSON to YAML converter

convertexa converts JSON files to YAML locally in your browser using a dedicated data engine. Nothing is uploaded: the file is read, converted and handed straight back to you as a download.

  • Free, no sign-up
  • Nothing is uploaded
  • Works offline
Quality
Lossless
Runs
In your browser
Max input
25 MB
Status
stable

Drop a file to convert

Everything happens on your device — nothing is uploaded.

or paste with Ctrl+V

How to convert JSON to YAML

  1. 1 Drop your JSON file here.
  2. 2 Choose the output format.
  3. 3 Convert and download the result.

About JSON and YAML

JSON is parsed and re-serialised, so key order is preserved and whitespace is normalised.

YAML is converted through its JSON-compatible data model.

JSON files are read by the convertexa engine that ships with this page, so the conversion is identical whether you use this tool or the general converter. The output is produced with the same codec settings for every visitor, which means the same input always produces the same result.

Limitations

  • The conversion runs in your browser, so very large files can exhaust the memory available to the tab.

Frequently asked questions

How do I convert a JSON file to YAML?

Add your JSON file to the box above. convertexa detects the format from the file content, applies the JSON to YAML conversion and gives you the result to download. The whole operation runs inside your browser.

Are my JSON files uploaded anywhere?

No. The conversion runs in a sandboxed worker on your own device. Your file never leaves the browser, and nothing is stored on a server.

Is the JSON to YAML conversion lossless?

Yes. This conversion preserves all of the source data, so the YAML file is equivalent to the original JSON file.

Is there a size limit?

For reliable results keep the input under 25 MB. Very large files run out of memory in the browser rather than failing quietly.

Which browsers are supported?

Any current version of Chrome, Edge, Firefox or Safari on a desktop. The conversion engines need WebAssembly and Web Workers, both of which are standard since 2018.