Is this a full YAML implementation?

It uses a complete YAML 1.2 parser (the open-source `yaml` library), so nested structures, block and flow styles, multiline strings, anchors and aliases and multiple documents all convert correctly.

Is my data uploaded anywhere?

No, conversion happens entirely in your browser.

Can I convert complex nested structures?

Yes, both directions handle deeply nested objects and arrays of objects.

How does it represent JSON null values in YAML?

JSON null values are written as the literal `null` in the YAML output, matching standard YAML convention.

Are YAML anchors and aliases supported when converting back to JSON?

Yes. Aliases are expanded to their full values, and merge keys written as <<: *name are merged into the mapping.

Does indentation matter when pasting YAML in?

Yes, YAML structure comes from indentation. If it is inconsistent the status bar shows the line and column of the problem so you can fix it.

Can it round-trip YAML comments?

No. Comments are dropped when YAML is parsed, and JSON has no way to store them.

What happens with a YAML file that has several documents?

Documents separated by --- are converted to a JSON array with one entry per document.

Processed 100% locally in your browser

JSON ↔ YAML Converter

Convert between JSON and YAML in a full-screen editor — anchors, multiline strings and multi-document files included.

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Quick Answer

JSON ↔ YAML Converter lets you: Convert between JSON and YAML in a full-screen editor — anchors, multiline strings and multi-document files included. To start, select JSON to YAML or YAML to JSON.

How to use this tool

1
Choose a direction
Select JSON to YAML or YAML to JSON.
2
Paste your content
Paste your JSON or YAML into the editor.
3
Copy or download the result
Copy the converted output or download it as a file.

Format & Performance Scorecard

Feature	JSON	YAML
Syntax	Braces and brackets	Indentation-based
Best for	APIs, data interchange	Config files, DevOps tooling
Readability	Compact but verbose	Human-friendly, less clutter
Comments	Not supported	Supported (#)

Frequently Asked Questions

JSON Formatter

A full-screen JSON editor: format, validate, repair, sort keys, and explore as a tree, table or JSONPath query — 100% local.

JSON to TS

Generate TypeScript interfaces, type aliases and Zod schemas from JSON, with optional fields and unions detected for you.

JSON ↔ YAML Converter

How to use this tool

Choose a direction

Paste your content

Copy or download the result

Format & Performance Scorecard

Frequently Asked Questions

Is this a full YAML implementation?

Is my data uploaded anywhere?

Can I convert complex nested structures?

How does it represent JSON null values in YAML?

Are YAML anchors and aliases supported when converting back to JSON?

Does indentation matter when pasting YAML in?

Can it round-trip YAML comments?

What happens with a YAML file that has several documents?

Related Tools

JSON Formatter

JSON to TS

JSON ↔ YAML Converter

How to use this tool

Choose a direction

Paste your content

Copy or download the result

Format & Performance Scorecard

Frequently Asked Questions

Is this a full YAML implementation?

Is my data uploaded anywhere?

Can I convert complex nested structures?

How does it represent JSON null values in YAML?

Are YAML anchors and aliases supported when converting back to JSON?

Does indentation matter when pasting YAML in?

Can it round-trip YAML comments?

What happens with a YAML file that has several documents?

Related Tools

JSON Formatter

JSON to TS