⇄ JSON ↔ YAML ↔ XML ↔ CSV Converter

Convert JSON to YAML and YAML to JSON instantly with syntax validation. Handles nested structures and arrays. Free online JSON ↔ YAML converter — no signup, browser-based.

From

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Input

Output

How to Use

Paste your data

Paste your JSON, YAML, XML, or CSV content into the input area and select the source format.

Choose target format

Select the output format from the To dropdown. All bidirectional conversions are supported.

Convert and copy

Click Convert. The result appears on the right. Click Copy to use it in your project.

Frequently Asked Questions

What is the difference between JSON, YAML, XML, and CSV? +

JSON is a compact data format widely used in APIs. YAML is a human-readable superset of JSON often used for config files (Kubernetes, GitHub Actions). XML is a verbose tag-based format used in enterprise systems and RSS feeds. CSV is a flat table format for spreadsheet data.

Can I convert complex nested JSON to CSV? +

CSV supports only flat (non-nested) data. When converting nested JSON to CSV, only the top-level keys become columns. Nested objects are serialized as JSON strings within their cell.

Why does my YAML not convert to JSON? +

Common issues: using tabs for indentation (YAML requires spaces), missing colons after keys, or using special characters without quotes. The error message will point to the problematic line.

Is there a data size limit? +

There is no hard limit, but very large files (over 5MB) may be slow since all processing runs in your browser. For production data transformation, a server-side tool is recommended.

Is my data sent to a server? +

No. All conversion runs entirely in your browser using JavaScript. Your data never leaves your device.

Guía: Convertidor JSON ↔ YAML

¿Qué es?

YAML es preferido para configuración por su legibilidad: CI/CD (GitHub Actions, GitLab CI), Kubernetes, Docker Compose. JSON es estándar para APIs. Este convertidor transforma entre ambos formatos bidirecionalmente.

Cómo usar

Pega JSON o YAML en la entrada.
Selecciona la dirección de conversión.
Copia el resultado.

Consejos

YAML es sensible a la indentación — mezclar tabs y espacios causa errores.
Strings con :, # o que empiezan con - deben ir entre comillas en YAML.
Valida YAML después de editar manualmente — los errores son difíciles de ver.