YAML ↔ JSON Converter

What is a YAML ↔ JSON Converter?

A YAML ↔ JSON Converter translates configuration data between the YAML text format and strict JSON syntax in both directions. Use it when porting config files, mocking APIs or switching between tools that expect one format or the other. Conversion runs with a small built-in YAML parser, so no data leaves your browser.

When is it useful?

• Config files: migrating .yml settings into JSON-based tools and CI pipelines.
• Validation: checking hand-written YAML indentation or JSON commas.
• Documentation: converting examples between the two formats.

Is my data safe?

Yes. Parsing and conversion happen entirely in your browser; your data is never sent or stored. Configurations with secrets can be converted safely.

YAML vs JSON

• YAML is written by humans: indentation and minimal punctuation.
• JSON is machine-first: braces, brackets, always quoted keys.
• Every JSON document is valid YAML, but not every YAML is valid JSON.
• Choose JSON for APIs and configs parsed by code; YAML for editable config files.

Indentation is the real syntax

In YAML, two spaces often mean a deeper level, and mixing spaces with tabs or inconsistent depths breaks the parse. If a conversion fails, the first thing to check is a stray tab or an unevenly indented block.