# pixrem

> A CSS post-processor that generates pixel fallbacks for rem units.

Latest version **5.0.0** (published 2018-12-30) · 0 weekly downloads

## Install

```sh
npm install pixrem
pnpm add pixrem
yarn add pixrem
bun add pixrem
```

## Health

**Score 23/100 (F)** — status: abandoned.

Positive: has types package; no vulnerabilities; high quality score.

Warnings: low downloads; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 5.0.0 |
| Published | 2018-12-30 |
| First published | 2013-12-15 |
| Weekly downloads | 0 |
| TypeScript types | separate (@types/pixrem) |
| Module format | CommonJS |
| Node | >=4.0.0 |
| Dependencies | 3 |
| Unpacked size | 24.7 KB |
| Known vulnerabilities | 0 (+5 in 1 direct dependencies) |
| Install scripts | no |
| GitHub stars | 198 |
| Author | Rob Wierzbowski |
| Maintainers | iamvdo, kizu, robwierzbowski |
| Keywords | css, postcss, postcss-plugin, rem, parser, postproccessor, responsive |

## Links

- npm: https://www.npmjs.com/package/pixrem
- Repository: https://github.com/robwierzbowski/node-pixrem
- Issues: https://github.com/robwierzbowski/node-pixrem/issues
- npm.io page: https://npm.io/package/pixrem

## Dependencies (3)

- [postcss](https://npm.io/package/postcss.md) ^7.0.7
- [browserslist](https://npm.io/package/browserslist.md) ^4.3.6
- [reduce-css-calc](https://npm.io/package/reduce-css-calc.md) ^2.1.5

## Alternatives

- [babylon](https://npm.io/package/babylon.md) — 5.1M weekly downloads
- [csscolorparser](https://npm.io/package/csscolorparser.md) — 3.7M weekly downloads
- [expr-eval-fork](https://npm.io/package/expr-eval-fork.md) — 1.5M weekly downloads
- [@leeoniya/ufuzzy](https://npm.io/package/@leeoniya/ufuzzy.md) — 247.7K weekly downloads
- [xml-parser](https://npm.io/package/xml-parser.md) — 78.4K weekly downloads

## Recent versions

- 5.0.0 (latest) — 2018-12-30
- 4.0.1 — 2017-07-06
- 4.0.0 — 2017-07-06
- 3.0.2 — 2016-08-22
- 3.0.1 — 2016-05-24
- 3.0.0 — 2015-09-23
- 2.0.1 — 2015-09-17
- 2.0.0 — 2015-08-24
- 1.3.1 — 2015-07-09
- 1.3.0 — 2015-07-01
- 1.2.4 — 2015-04-17
- 1.2.3 — 2015-03-27
- 1.2.2 — 2015-03-27
- 1.2.1 — 2015-03-23
- 1.2.0 — 2015-02-19
- … 9 more at https://npm.io/package/pixrem/versions

## README

# Pixrem

[![Build Status](https://travis-ci.org/robwierzbowski/node-pixrem.png?branch=master)](https://travis-ci.org/robwierzbowski/node-pixrem)

[PostCSS](https://github.com/ai/postcss) plugin that generates pixel fallbacks for rem units.

## Installation

`npm install --save pixrem`

## Usage

Pixrem is a CSS post-processor that, given CSS and a root em value, returns CSS with pixel unit fallbacks or replacements. It's based on [browser data](http://caniuse.com/rem) so only needed fallbacks will be added. Basically, it's for IE8 or less, and for IE9 & IE10 in the `font` shorthand property and in pseudo-elements.

### Example

```js
'use strict';
var fs      = require('fs');
var pixrem  = require('pixrem');
var postcss = require('postcss');

var css = fs.readFileSync('main.css', 'utf8');
var processedCss = postcss([pixrem]).process(css).css;

fs.writeFile('main.with-fallbacks.css', processedCss, function (err) {
  if (err) {
    throw err;
  }
  console.log('IE8, you\'re welcome.');
});
```

Pixrem takes this:

```css
.sky {
  margin: 2.5rem 2px 3em 100%;
  color: blue;
}

@media screen and (min-width: 20rem) {
  .leaf {
    margin-bottom: 1.333rem;
    font-size: 1.5rem;
  }
}
```

And returns this:

```css
.sky {
  margin: 80px 2px 3em 100%;
  margin: 2.5rem 2px 3em 100%;
  color: blue;
}

@media screen and (min-width: 20rem) {
  .leaf {
    margin-bottom: 1.333rem;
    font-size: 1.5rem;
  }
}
```

### Options

Type: `Object | Null`
Default: `{rootValue: 16, replace: false, atrules: false, html: true, browsers: 'ie <= 8', unitPrecision: 3}`

- `rootValue`     the root element font size. Can be `px`, `rem`, `em`, `%`, or unitless pixel value. Pixrem also tries to get the root font-size from CSS (`html` or `:root`) and overrides this option. Use `html` option to disable this behaviour.
- `replace`       replaces rules containing `rem`s instead of adding fallbacks.
- `atrules`       generates fallback in at-rules too (media-queries)
- `html`          overrides root font-size from CSS `html {}` or `:root {}`
- `browsers`      sets browser's range you want to target, based on [browserslist](https://github.com/ai/browserslist)
- `unitPrecision` control the significant digits after the decimal point

## Contribute

Report bugs and feature proposals in the [Github issue tracker](https://github.com/robwierzbowski/node-pixrem/issues). Run tests with `npm test`. In lieu of a formal styleguide, take care to maintain the existing coding style.

## License

[MIT](http://en.wikipedia.org/wiki/MIT_License)


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---
_Source: https://npm.io/package/pixrem · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._