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Client-side ProcessingUpdated 2026-02-11Report issue

Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.

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Cmd/Ctrl+Shift+S SwapCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+C Copy outputCmd/Ctrl+Shift+D Download
Source (JSON)
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Output (YAML)
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About Data Format Converter

Convert between JSON, YAML, CSV, XML, and TOML formats instantly. Convert between JSON, YAML, CSV, XML, and TOML online for free. Bidirectional, instant, runs in your browser. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.

Related tools: JSON Formatter & Validator, Diff Checker, Base64 Encode / Decode

How to Use Data Format Converter

  1. Enter your input into the tool.
  2. The tool processes it instantly in your browser.
  3. Copy the result to your clipboard.

Frequently Asked Questions

What is Data Format Converter?
Convert between JSON, YAML, CSV, XML, and TOML online for free. Bidirectional, instant, runs in your browser.
Is Data Format Converter free to use?
Yes, it is completely free to use. It runs entirely in your browser with no signup, no account, and no usage limits.
Is my data safe when using Data Format Converter?
Yes. All processing happens locally in your browser. No data is uploaded to any server, so your information stays private and secure.