https://github.com/mrcgrtz/postcss-opacity-percentage

🌗 PostCSS plugin to transform percentage-based opacity values to more compatible floating-point values.
https://github.com/mrcgrtz/postcss-opacity-percentage

css css4 opacity postcss postcss-plugin

Last synced: 3 days ago
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🌗 PostCSS plugin to transform percentage-based opacity values to more compatible floating-point values.

• Host: GitHub
• URL: https://github.com/mrcgrtz/postcss-opacity-percentage
• Owner: mrcgrtz
• License: mit
• Created: 2021-11-08T14:38:48.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2025-01-01T13:16:56.000Z (23 days ago)
• Last Synced: 2025-01-19T03:16:26.827Z (5 days ago)
• Topics: css, css4, opacity, postcss, postcss-plugin
• Language: JavaScript
• Homepage: https://www.npmjs.com/package/postcss-opacity-percentage
• Size: 1.78 MB
• Stars: 10
• Watchers: 1
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE.md
  • Code of conduct: CODE_OF_CONDUCT.md

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README

        
# PostCSS Opacity Percentage

[![Test](https://github.com/mrcgrtz/postcss-opacity-percentage/actions/workflows/test.yml/badge.svg)](https://github.com/mrcgrtz/postcss-opacity-percentage/actions/workflows/test.yml)

[![Coverage Status](https://coveralls.io/repos/github/mrcgrtz/postcss-opacity-percentage/badge.svg?branch=main)](https://coveralls.io/github/mrcgrtz/postcss-opacity-percentage?branch=main)

[![Install size](https://packagephobia.now.sh/badge?p=postcss-opacity-percentage)](https://packagephobia.now.sh/result?p=postcss-opacity-percentage)

[![XO code style](https://img.shields.io/badge/code_style-XO-5ed9c7.svg)](https://github.com/sindresorhus/xo)

[![MIT license](https://img.shields.io/github/license/mrcgrtz/postcss-opacity-percentage.svg)](https://github.com/mrcgrtz/postcss-opacity-percentage/blob/main/LICENSE.md)

[PostCSS](https://github.com/postcss/postcss) plugin to transform [percentage-based opacity values](https://www.w3.org/TR/css-color-4/#transparency) to more compatible floating-point values.

## Install

Using [npm](https://www.npmjs.com/get-npm):

```bash

npm install --save-dev postcss postcss-opacity-percentage

```

Using [yarn](https://yarnpkg.com/):

```bash

yarn add --dev postcss postcss-opacity-percentage

```

## Example

```css

/* Input */

.foo {

  opacity: 45%;

}

```

```css

/* Output */

.foo {

  opacity: 0.45;

}

```

## Usage

```js

postcss([

  require('postcss-opacity-percentage'),

]);

```

See [PostCSS](https://github.com/postcss/postcss) documentation for examples for your environment.

### `postcss-preset-env`

If you are using [`postcss-preset-env@>=7.3.0`](https://github.com/csstools/postcss-plugins/blob/main/plugin-packs/postcss-preset-env/CHANGELOG.md#730-january-31-2022), you already have this plugin installed via this package.

## Options

### `preserve`

The `preserve` option determines whether the original percentage value is preserved. By default, it is not preserved.

```js

// Keep the original notation

postcss([

  require('postcss-opacity-percentage')({preserve: true}),

]);

```

```css

/* Input */

.foo {

  opacity: 45%;

}

```

```css

/* Output */

.foo {

  opacity: 0.45;

  opacity: 45%;

}

```

## License

MIT © [Marc Görtz](https://marcgoertz.de/)