Table of Contents

• Introduction
• Installation
• Usage
• Contributing

Introduction

A fluid typography plugin for Tailwind CSS. This plugin generates a set of fluid typography utilities based on your configuration. It uses the clamp() CSS function to create a fluid typography scale that is responsive by default.

How is it different than other plugins?

There are two major similar plugins:

1. https://github.com/davidhellmann/tailwindcss-fluid-type
2. https://github.com/craigrileyuk/tailwind-fluid-typography

Both of these plugins are based on automatically scaling via multipliers which means it's hard to manually set each font size or break the scale if the design requires so.

This plugin allows you to set each font-size, line-height, and letter-spacing values individually. It does not give you a predefined set of sizes or sizes that follow a type scale, you have to manually define them yourself, but the plugin will scale them for you.

Installation

npm i tailwindcss-fluid-typography

or

yarn add tailwindcss-fluid-typography

Usage

Reference your static font sizes from Tailwind config and copy those. Then, add another value in the array to scale between the two values.

You should check your design and set each type scale size upper and lower end based on the desktop and mobile design sizes. The plugin will automatically resize between those two sizes within the chosen screen sizes.

The default screen sizes are 30rem (480px) and 80rem (1280px)

Specify min and max values in an array, for example:

  fontSize: [1.125, 1.5],
  lineHeight: [1.75, 2],

The plugin will scale between font-size: 1.125rem and font-size: 1.5rem and line-height: 1.75rem and line-height: 2rem, within the selected screen sizes.

Example config

module.exports = {
  plugins: [
    require("tailwindcss-fluid-typography")({
      minScreenWidth: 30, // width in rem
      maxScreenWidth: 80, // width in rem
      unit: "rem",
      suffix: "-fluid",
      prefix: "",
      values: [
        {
          key: "xs",
          fontSize: 0.75,
          lineHeight: 1,
        },
        {
          key: "sm",
          fontSize: 0.875,
          lineHeight: 1.25,
        },
        {
          key: "base",
          fontSize: [0.875, 1],
          lineHeight: [1.25, 1.5],
        },
        {
          key: "lg",
          fontSize: [1, 1.125],
          lineHeight: [1.5, 1.75],
        },
        {
          key: "xl",
          fontSize: [1.125, 1.25],
          lineHeight: [1.5, 1.75],
        },
        {
          key: "2xl",
          fontSize: [1.25, 1.5],
          lineHeight: [1.75, 2],
        },
        {
          key: "3xl",
          fontSize: [1.5, 1.875],
          lineHeight: [2, 2.25],
        },
        {
          key: "4xl",
          fontSize: [1.875, 2.25],
          lineHeight: [2.25, 2.5],
        },
        {
          key: "5xl",
          fontSize: [2.25, 3],
          lineHeight: [2.5, 3.5],
        },
        {
          key: "6xl",
          fontSize: [3, 3.75],
          lineHeight: [3.5, 4.5],
        },
        {
          key: "7xl",
          fontSize: [3.75, 4.5],
          lineHeight: [4.5, 5],
        },
        {
          key: "8xl",
          fontSize: [4.5, 5.5],
          lineHeight: [5, 5.5],
        },
        {
          key: "9xl",
          fontSize: [5.5, 6.25],
          lineHeight: [5.5, 6.25],
        },
      ],
    }),
  ],
};

Then you can use the generated classes in your HTML, just by appending -fluid to the existing font sizes. For example:

<h1 class="text-3xl-fluid">Hello World</h1>

Or you can pass a custom suffix or prefix in config to alter the generated class names:

  suffix: "",
  prefix: "fluid-",

to get

<h1 class="fluid-text-3xl">Hello World</h1>

Letter spacing

You can also control tracking values. You can do that by adding letterSpacing values to your config.

{
    key: '3xl',
    fontSize: [2.125, 5],
    lineHeight: [2.625, 5.5],
    letterSpacing: [-0.003125, -0.00625],
},

You can pass an array with two values to scale between them, or just a number to set a fixed value in case you need so.

{
    key: '3xl',
    fontSize: [2.125, 5],
    lineHeight: [2.625, 5.5],
    letterSpacing: -0.03125,
},

Contributing

Feel free to submit PR for review or suggest changes in GitHub issues.