Convert JSON to YAML
Convert a JSON data structure to YAML markup. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Convert JSON to YAML
- 1. Paste your JSON. Paste the JSON object or array you want converted, formatted or minified. Nested objects, arrays and primitive values all carry over into YAML's equivalent shapes.
- 2. Pick the indent width. Choose 2 spaces or 4 spaces for the Indent setting. YAML's structure depends entirely on indentation, so pick the width your project's other YAML files already use for consistency.
- 3. Copy the YAML output. Copy the generated YAML and paste it into a docker-compose file, a Kubernetes manifest or any config that expects YAML instead of JSON, since YAML is a strict superset of JSON's data model.
When to use Convert JSON to YAML
Convert JSON to YAML is for moving structured data into the config formats that expect YAML by convention, even though YAML can represent anything JSON can. This tool rewrites your JSON's objects, arrays and values as block-style YAML with the indentation you choose.
- Writing a Kubernetes manifest from JSON data. You have deployment settings modeled as JSON in your application, but Kubernetes manifests are conventionally written in YAML. Converting once gives you a starting YAML file to refine.
- Migrating a docker-compose config. A teammate handed you service definitions as a JSON object, but docker-compose.yml expects YAML. This tool produces the YAML equivalent so you can drop it straight into the file.
- Converting API response data into a CI config. You pulled a JSON response from an API and need the same values in a GitHub Actions or GitLab CI YAML file, where matching indentation matters for the workflow to parse.
- Prepping GitHub Actions workflow values. You maintain a set of environment variables as JSON elsewhere and need the same structure pasted into a workflow file that only accepts YAML syntax.
Examples
Convert an object with a nested list
Input
{"name": "Ada", "languages": ["js", "ts"], "active": true}Output
name: Ada languages: - js - ts active: true
About the Convert JSON to YAML tool
Convert JSON to YAML does its work locally, right in the browser. Convert a JSON data structure to YAML markup. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the JSON Tools collection on EditSafely, a set of 90 small, focused JSON utilities that share the same instant, private workspace.
You can shape the output with the Indent setting, and the result refreshes the moment you change it. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Convert JSON to YAML free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.