JSON Converter
Convert YAML, TOML, INI, XML, CSV, JSON5, HJSON to JSON locally in your browser.
Input
Output
Converted output will appear here
JSON Converter Features
Professional-grade json converter designed for speed, security, and simplicity
Broad format support
Convert YAML, TOML, INI, XML, CSV, JSON5, and HJSON into standardized JSON.
Smart validation
Highlights syntax issues early and normalizes number, boolean, and null representations.
Readable output
Pretty-print with adjustable indentation for copy/paste or download.
How it works
Each input is parsed into an internal abstract syntax tree (AST), transformed to canonical structures, then serialized as clean JSON.
Parse
Input content is parsed using format-specific parsers (YAML, TOML, XML, etc.).
Normalize
Data types and key ordering are normalized; unsupported constructs are converted to JSON-safe equivalents.
Serialize
The transformed AST is emitted as pretty or compact JSON ready for export.
Use cases
Config conversion
Turn TOML/YAML/INI project configs into JSON for build tools or deployment scripts.
API ingestion
Normalize legacy XML or CSV feeds to JSON for modern applications.
Learning & comparison
Understand structural differences between serialization formats by converting them side-by-side.
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