What is the JSON structure output format?

The output JSON uses CSS selectors as top-level keys, with each selector mapping to an object of camelCase CSS property names and their string values. For example: { ".button": { "backgroundColor": "#007bff", "borderRadius": "4px" } }

CSS to JSON Converter

Convert CSS stylesheets to JSON objects with AI — free, instant, no login required.

CSS to JSON conversion exports your stylesheet rules as structured JSON objects — ideal for design token pipelines, React Native style sheets, and programmatic CSS processing. Paste any CSS and get clean JSON output instantly.

Paste your code, then click Convert

JSON

How to use this tool?

This online converter harnesses AI to seamlessly convert your CSS code to JSON in just a click of a button. Follow these steps to make the most of this advanced converter:

Type or paste your CSS code into the input box provided. You can directly enter your code or copy it from your favourite code editor.
Initiate the conversion process by clicking on the "Convert" button
Instantly view the transformed JSON code in the output box. The AI-powered converter ensures accurate and efficient conversion.

Example: Simple Function

CSS

{
  display: flex;
  justify-content: center;
  align-items: center;
}

JSON

{
  "display": "flex",
  "justifyContent": "center",
  "alignItems": "center",
  "border": "1px solid black"
}

How to Convert CSS to JSON

CSS to JSON conversion is useful when building CSS-in-JS solutions, processing stylesheets programmatically, or passing styles as data to APIs and components. Manually converting CSS properties to JSON object keys means handling camelCase conversion, unit stripping, and nested rule parsing.

The CSS to JSON converter handles the parsing automatically. Paste any CSS — including selectors, media queries, and nested rules — and get a structured JSON representation instantly.

Why Use a CSS to JSON Converter?

→Pass styles as JSON data to React Native or CSS-in-JS libraries
→Process CSS programmatically for linting, theming, or analysis tools
→Export design tokens from CSS to JSON for design system pipelines
→Convert inline styles for server-rendered components

What the CSS to JSON Converter Handles

CSS property to camelCase JSON keys

Selector grouping

Media query parsing

Pseudo-class rules

CSS custom properties (variables)

Nested rule structures

Multiple selectors

Animation keyframes

Import statements

Unit preservation

Comment stripping

Minified CSS input

Frequently Asked Questions

What is CSS to JSON conversion?

CSS to JSON conversion parses CSS stylesheet rules and outputs them as structured JSON objects. CSS selectors become keys, and property-value pairs become nested objects — useful for design token pipelines, React Native stylesheets, and programmatic style processing.

What does the JSON output look like?

The output uses CSS selectors as top-level keys with camelCase CSS properties as values. For example: { ".button": { "backgroundColor": "#007bff", "borderRadius": "4px" } }

Can I use the output with React Native?

Yes. The camelCase JSON format is compatible with React Native's StyleSheet.create() syntax, making it a convenient way to migrate web CSS to React Native styles.

Is the tool free?

Yes, completely free with no account required.

What is CSS to JSON conversion used for?

CSS to JSON is used in CSS-in-JS frameworks (styled-components, Emotion), React Native (which uses JSON-like style objects), design token pipelines, and tooling that processes styles programmatically.

How are CSS property names converted to JSON keys?

CSS properties use kebab-case (background-color). JSON keys in style objects use camelCase (backgroundColor). The converter handles this mapping automatically.

Can I convert media queries to JSON?

Yes. Media queries are preserved as nested JSON keys, matching the structure used by CSS-in-JS libraries like styled-components and Emotion.

What is the difference between CSS and inline styles?

CSS supports selectors, pseudo-classes, media queries, and cascade. Inline styles (and their JSON equivalent) apply directly to elements with no selector or cascade. JSON style objects are the inline-style equivalent.

Does the converter support CSS custom properties (variables)?

Yes. CSS variables (--primary-color: #6366f1) are preserved in the JSON output, typically as a variables or root key depending on context.