JSON Format Converter
Convert between JSON, YAML, XML, CSV, and TypeScript interfaces instantly. Auto-detect formats, customize conversion settings, and track your conversion history. All processing happens in your browser.
Input (JSON)
Output (YAML)
Powerful JSON Conversion Features
Everything you need to convert between multiple data formats quickly and accurately.
Multiple Format Support
Convert between JSON, YAML, XML, CSV, and TypeScript interfaces. Switch formats with a single click and swap input/output instantly.
Auto Format Detection
Paste any supported format and the tool automatically detects whether it's JSON, YAML, XML, or CSV. No need to manually select—just paste and convert.
TypeScript Interface Generation
Generate TypeScript interfaces directly from your JSON data. Perfect for creating type definitions for APIs or data models in TypeScript projects.
Format-Specific Options
Customize conversions with format-specific settings: YAML indentation, XML root names, CSV delimiters, TypeScript styling. Fine-tune output to match your needs.
Conversion History
Automatically saves your last 50 conversions with timestamps, formats, and success status. Review past conversions and track your work.
File Upload & Download
Upload files in any supported format and download converted results with proper file extensions and MIME types. Works with large files.
How to Convert Between Formats
Convert your data in three simple steps with automatic format detection.
Add Your Data
Paste your data into the input editor or upload a file. The tool auto-detects the format (JSON, YAML, XML, CSV) and suggests the correct source format.
Select Target Format
Choose your desired output format from the dropdown (JSON, YAML, XML, CSV, or TypeScript). Adjust format-specific settings in the Settings panel if needed.
Convert & Download
Click Convert to transform your data. The output appears instantly in the right panel. Copy to clipboard or download as a file with the proper extension.
Frequently Asked Questions
What formats can I convert between?
You can convert between JSON, YAML, XML, CSV, and TypeScript interfaces. All conversions go through JSON as an intermediate format, so you can convert from any format to any other format (except TypeScript can only be an output format).
How does auto-detection work?
The tool analyzes your input and identifies the format based on structure and syntax. If it detects a format different from your selection, it shows a suggestion to switch. You can accept the suggestion with one click.
Can I customize the conversion output?
Yes! Click Settings to access format-specific options. For YAML, control indentation and key sorting. For XML, set custom root names. For CSV, choose delimiters and headers. For TypeScript, configure code styling and interface names.
Is my data stored or sent to a server?
No. All conversions happen locally in your browser using JavaScript. Your data never leaves your device. Conversion history and settings are saved only in your browser's local storage.