JSON
JSON is explicit, strict, and widely used in APIs, exports, and app integrations.
It is verbose, but that consistency makes it easy for tools to parse and validate.
JSON / YAML / TOML Converter
Validate, prettify, minify, and convert JSON, YAML, and TOML with clear compatibility warnings.
About JSON, YAML, and TOML
JSON, YAML, and TOML all store structured data, but they trade off readability, strictness, and config-friendly syntax differently. Comparing them side by side makes those differences easier to spot.
YAML
YAML is designed to be easy to scan in longer config files.
It reads well, but indentation errors can break the structure quickly.
TOML
TOML is a simple format built for named settings and small config sections.
It stays predictable and tidy for project and tool configuration.
Frequently asked questions
Answers about validation, compatible outputs, TOML limitations, and how the formatter handles pretty and minified JSON alongside YAML and TOML rendering.
Other tools
Browse every dedicated tool page from the homepage hub or the centered header selector.
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Color & CSS
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Assets
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Data Formats
CSV Validator
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Text
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Text
Markdown Validator & Preview
Validate Markdown structure, preview rendered output, and catch common authoring issues before publishing.
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Text
Text to PDF
Write and format text in a rich editor, then export the document as a PDF directly in your browser.
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