# @csstools/postcss-font-format-keywords

> Use unquoted format on @font-face CSS definitions.

Latest version **5.0.0** (published 2026-01-14) · MIT-0 license · 0 weekly downloads

## Install

```sh
npm install @csstools/postcss-font-format-keywords
pnpm add @csstools/postcss-font-format-keywords
yarn add @csstools/postcss-font-format-keywords
bun add @csstools/postcss-font-format-keywords
```

## Health

**Score 55/100 (C)** — status: stable.

Positive: esm support; no vulnerabilities; high maintenance score.

Warnings: low downloads; no types.

## Facts

| | |
|---|---|
| Version | 5.0.0 |
| Published | 2026-01-14 |
| First published | 2022-01-25 |
| Weekly downloads | 0 |
| License | MIT-0 |
| TypeScript types | none |
| Module format | ESM |
| Node | >=20.19.0 |
| Dependencies | 2 |
| Unpacked size | 6.9 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 1052 |
| Author | Jonathan Neal |
| Maintainers | jonathantneal, alaguna, romainmenke |
| Keywords | css, embedded-opentype, font, font-format-keywords, format, opentype, postcss-plugin, truetype, woff, woff2 |

## Links

- npm: https://www.npmjs.com/package/@csstools/postcss-font-format-keywords
- Repository: https://github.com/csstools/postcss-plugins
- Homepage: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-font-format-keywords#readme
- Issues: https://github.com/csstools/postcss-plugins/issues
- Funding: https://github.com/sponsors/csstools
- npm.io page: https://npm.io/package/@csstools/postcss-font-format-keywords

## Dependencies (2)

- [@csstools/utilities](https://npm.io/package/@csstools/utilities.md) ^3.0.0
- [postcss-value-parser](https://npm.io/package/postcss-value-parser.md) ^4.2.0

## Alternatives

- [style-dictionary](https://npm.io/package/style-dictionary.md) — 2.0M weekly downloads
- [postcss-merge-idents](https://npm.io/package/postcss-merge-idents.md) — 1.7M weekly downloads
- [@fontsource/noto-sans](https://npm.io/package/@fontsource/noto-sans.md) — 93.0K weekly downloads
- [uglifycss](https://npm.io/package/uglifycss.md) — 71.6K weekly downloads
- [mat4-interpolate](https://npm.io/package/mat4-interpolate.md) — 23.3K weekly downloads

## Recent versions

- 5.0.0 (latest) — 2026-01-14
- 4.0.0 — 2024-08-03
- 3.0.2 — 2024-02-19
- 3.0.1 — 2023-12-15
- 3.0.0 — 2023-07-03
- 2.0.2 — 2023-02-08
- 2.0.1 — 2023-01-28
- 2.0.0 — 2023-01-24
- 1.0.1 — 2022-07-08
- 1.0.0 — 2022-01-25

## README

# PostCSS Font Format [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS Logo" width="90" height="90" align="right">][postcss]

[<img alt="npm version" src="https://img.shields.io/npm/v/@csstools/postcss-font-format-keywords.svg" height="20">][npm-url]
[<img alt="Build Status" src="https://github.com/csstools/postcss-plugins/actions/workflows/test.yml/badge.svg?branch=main" height="20">][cli-url]
[<img alt="Discord" src="https://shields.io/badge/Discord-5865F2?logo=discord&logoColor=white">][discord]
<br><br>
[<img alt="Baseline Status" src="https://cssdb.org/images/badges-baseline/font-format-keywords.svg" height="20">][css-url]
[<img alt="CSS Standard Status" src="https://cssdb.org/images/badges/font-format-keywords.svg" height="20">][css-url]

[PostCSS Font Format Keywords] lets you specify font formats as keywords, following the [CSS Fonts] specification.

```css
@font-face {
  src: url(file.woff2) format(woff2);
}

/* becomes */

@font-face {
  src: url(file.woff2) format("woff2");
}
```

_See prior work by [valtlai](https://github.com/valtlai) here [postcss-font-format-keywords](https://github.com/valtlai/postcss-font-format-keywords)
To ensure long term maintenance and to provide the needed features this plugin was recreated based on valtlai's work._

## Usage

Add [PostCSS Font Format Keywords] to your project:

```bash
npm install postcss @csstools/postcss-font-format-keywords --save-dev
```

Use it as a [PostCSS] plugin:

```js
const postcss = require('postcss');
const postcssFontFormatKeywords = require('@csstools/postcss-font-format-keywords');

postcss([
  postcssFontFormatKeywords(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);
```

[PostCSS Font Format Keywords] runs in all Node environments, with special
instructions for:

| [Node](INSTALL.md#node) | [PostCSS CLI](INSTALL.md#postcss-cli) | [Webpack](INSTALL.md#webpack) | [Gulp](INSTALL.md#gulp) | [Grunt](INSTALL.md#grunt) |
| --- | --- | --- | --- | --- |

## Options

### preserve

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

```js
postcssFontFormatKeywords({ preserve: true })
```

```css
@font-face {
  src: url(file.woff2) format(woff2);
}

/* becomes */

@font-face {
  src: url(file.woff2) format("woff2");
  src: url(file.woff2) format(woff2);
}
```

[postcss]: https://github.com/postcss/postcss

[cli-url]: https://github.com/csstools/postcss-plugins/actions/workflows/test.yml?query=workflow/test
[css-url]: https://cssdb.org/#font-format-keywords
[discord]: https://discord.gg/bUadyRwkJS
[npm-url]: https://www.npmjs.com/package/@csstools/postcss-font-format-keywords

[CSS Fonts]: https://www.w3.org/TR/css-fonts-4/#font-format-values
[Gulp PostCSS]: https://github.com/postcss/gulp-postcss
[Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss
[PostCSS]: https://github.com/postcss/postcss
[PostCSS Loader]: https://github.com/postcss/postcss-loader
[PostCSS Font Format Keywords]: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-font-format-keywords

---
_Source: https://npm.io/package/@csstools/postcss-font-format-keywords · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._