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CSS Custom Property Inventory

Extract simple custom property declarations and var() references.

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CSS variable inventory online

Extract simple custom property declarations and var() references. Use this when inspecting structured input or preparing a data or code artifact. Generated commands and configurations remain text until you review and use them yourself.

How to use it

Enter a value or text in the format shown in the example. Choose Run tool. Review the output, then copy or download it.

Worked examples

Use this when inspecting structured input or preparing a data or code artifact. Generated commands and configurations remain text until you review and use them yourself.

Reproducible worked example

Settings: No additional settings.

Input:

:root { --accent: #3366ff; --space: 8px; } .card { color: var(--accent); margin: 1rem; font-family: Arial, sans-serif; background: url("icon.png"); padding: 8px !important; }

With the input and settings above, the tool produces:

Output:

{
  "definitions": [
    {
      "name": "--accent",
      "value": "#3366ff"
    },
    {
      "name": "--space",
      "value": "8px"
    }
  ],
  "references": [
    "--accent"
  ]
}

The example returns an object with 2 top-level fields. The fields “definitions”, “references” identify the returned values or sections.

Limitations and common mistakes

  • Lexical inspection; strings, comments and nested syntax can require a full CSS parser.
  • Combined input is bounded to 150,000 characters; output text is bounded to 1.2 million characters. Some algorithms impose smaller limits, stated in their error messages.

Frequently asked questions

What format should I enter?

Enter a value or text in the format shown in the example. The worked example shows the supported structure and actual output.

How can I pull out simple custom property declarations and var() references in CSS online?

Enter a value or text in the format shown in the example. Choose Run tool. Review the output, then copy or download it.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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