JSON & YAML Converter
Instantly convert data between JSON and YAML formats. Perfect for Docker, Kubernetes, and application configuration files.
How to Use
- Paste your JSON or YAML data into the left panel.
- Click JSON → YAML if your input is JSON, or click YAML → JSON if your input is YAML.
- Adjust the YAML Indent or Sort Keys options to format the output exactly how you need it.
- Click Copy Output or Download to save the converted file directly to your device.
Features
Two-Way Conversion
Flawlessly translates JSON to YAML and YAML back to JSON.
Syntax Validation
Automatically detects and highlights syntax errors in your data.
Key Sorting
Optionally sort all keys alphabetically for cleaner configuration files.
100% Private
All data parsing happens securely inside your local browser.
Use Cases
- DevOps & Infrastructure: Convert massive JSON configurations into highly readable YAML files for Docker Compose, Kubernetes, or GitHub Actions.
- Data Migration: Translate strict JSON payloads from web APIs into human-editable YAML blocks.
- Syntax Checking: Use the tool to validate and format messy YAML files that are throwing indentation errors in your code.
- File Minification: Convert YAML into JSON and run it through a minifier for production use.
JSON vs YAML: Which is better?
Both JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language) are used for data serialization, but they serve different purposes. JSON is strictly formatted, making it incredibly fast for computers and APIs to parse. YAML is designed specifically for human readability; it removes all the brackets and quotes and relies entirely on indentation and whitespace. Because of this, YAML is the industry standard for configuration files (like CI/CD pipelines), while JSON is the standard for web network requests.
The Data Format Suite
If you need to parse this data into a spreadsheet, copy your JSON output and paste it into our JSON to CSV Converter. If you want to compress your JSON before sending it over a network, use the JSON Minifier. Working with legacy systems? Try our XML to JSON Converter.
Frequently Asked Questions
Does this tool support YAML Anchors and Aliases?
Yes. The parsing engine fully supports the YAML 1.2 specification, meaning complex features like anchors (&) and aliases (*) are accurately resolved and converted into deep JSON structures.
Why did my YAML to JSON conversion fail?
YAML relies entirely on strict indentation. If you mix tabs and spaces, or if your indentation levels are misaligned, the parser will throw an error. The tool will display the exact line number of the error to help you fix it.
Is there a file size limit?
Because the conversion happens entirely locally using JavaScript, the only limit is your browser's memory. It handles standard multi-megabyte config files easily.
Are my API keys and passwords safe?
Yes! No data is ever sent to our servers. Everything is parsed securely inside your local web browser.
Is it free?
Yes, 100% free with no limits.