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JSON to YAML converter, without the upload.

Turn JSON into YAML. It is converted in your browser, so the file never leaves your device.

Drop JSON files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

Convert to

How to convert JSON to YAML

  1. Add your JSON data files

    Drop JSON files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.

  2. YAML is already chosen

    Press Convert. There is nothing else to set. The work happens in this tab.

  3. Download

    Save the YAML, or download everything as one ZIP if you converted several files.

Why ToAny

  • Private by construction

    The JSON to YAML converter is part of this page and runs inside your browser. Your data files are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

JSON to YAML: what to expect

YAML is the same data model as JSON written with indentation instead of braces, and it allows comments. That makes it the usual format for configuration in Kubernetes, Docker Compose and CI pipelines.

Keys, nesting and values carry over.

JSON vs YAML

JSON

JSON data

JSON represents data as nested objects and lists in plain text. It is the default language of web APIs. Unlike a spreadsheet it can be nested to any depth, which is also why turning it into rows and columns takes a decision about how to flatten it.

Opens in Any text editor, every programming language, browser developer tools

JSON converter
YAML

YAML data

YAML expresses the same structures as JSON using indentation instead of brackets, and allows comments. It is the usual choice for configuration in tools like Docker Compose, Kubernetes and GitHub Actions.

Opens in Any text editor

YAML converter
JSON compared with YAML
JSONJSON dataYAMLYAML data
Stands forJavaScript Object NotationYAML Ain't Markup Language
TypeStructured data (text)Structured data (text)
CompressionNoneNone
Introduced2001, by Douglas Crockford2001, by Clark Evans, Ingy döt Net and Oren Ben-Kiki
Opens inAny text editor, every programming language, browser developer toolsAny text editor
Best forAPIs and data exchanged between programsConfiguration files written by people
File extension.json.yaml, .yml

Questions

Are my data files uploaded anywhere?

No. The JSON to YAML conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Is anything lost when converting JSON to YAML?

The values are kept. Anything YAML has no way to express, such as formatting, formulas or nesting, is simplified or left out.

Can I convert several JSON files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert JSON to YAML on Windows, Mac, iPhone or Android?

The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the JSON file, press Convert and save the YAML. There is nothing to install.

Is there a file size limit?

Yes. Data files up to 300 MB are accepted; a larger file is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.