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Data Format Transformer – Convert Between JSON, YAML & XML

Transform data between JSON, YAML, and XML formats instantly with automatic validation and formatting—all offline in your browser.

🟢 Runs locally · no uploads

Data Format Transformer

Convert between JSON, YAML, CSV, XML and more

JSON Input
YAML Output
data_object

Converted output will appear here

Characters: 0Lines: 1Size: 0 B

lightbulbPopular Use Cases

swap_horiz
API Integration

Transform data formats between different API systems (JSON ↔ XML ↔ YAML)

settings
Config File Migration

Convert configuration files when migrating between frameworks and tools

import_export
Data Export & Import

Transform data exports between databases, spreadsheets, and applications

schema
Schema Conversion

Convert data schemas and structures for ETL pipelines and data warehouses

scienceExample Data

data_objectJSON to YAML
{"name": "John", "age": 30, "city": "New York"}...
data_objectCSV to JSON
name,age,city
John,30,New York
Jane,25,Boston...

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› About this tool · FAQ

Transform data between multiple formats including JSON, YAML, CSV, XML, TOML, INI, and Properties with structure preservation and advanced options.

What data formats are supported?

Supports JSON, YAML, CSV, XML, TOML, INI, and Properties formats with bidirectional conversion between most format pairs.

How does the tool handle nested data structures?

Preserves nested objects and arrays when converting between formats that support them. Flattens or converts structures appropriately for simpler formats like CSV.

Can I customize CSV parsing and generation?

Yes, configure delimiters, quote characters, header handling, and escape characters for precise CSV processing and generation.

What happens to data types during conversion?

The tool preserves data types where possible, automatically detecting numbers, booleans, and strings. Some formats may require type coercion.

How are comments and metadata handled?

Comments are preserved when supported by both source and target formats. Metadata like structure information is provided in the transformation report.