shrink-to-fit

Have you ever recoiled in terror when a designer has asked you to make text fit on a maximum of two lines? Just shrink the font size if you need to, that's simple, right?

With shrink-to-fit, it is!

Quickstart

Add the shrink-to-fit package to your project:

$ npm install --save shrink-to-fit

Then use it to determine font size:

import shrinkToFit from 'shrink-to-fit';


const target = document.getElementById('text-container');
const widthPx = target.clientWidth;

const text = "I am the very model of a modern Major-General. " +
             "I've information vegetable, animal, and mineral.";
const fittingFontSize = shrinkToFit(text, widthPx);

target.style.fontSize = `${fittingFontSize}px`;
target.innerText = text;

Reference

The shrinkToFit function accepts two required arguments: text and widthPx. text is a string representing the text you want to display. widthPx is the width, in pixels, of the box in which you'd like the text to fit.

shrinkToFit also accepts a settings object as an optional third parameter. You can specify any combination of the following properties of the settings object to change the library's behavior, or omit the object entirely to accept the defaults:

• settings.maxLines (number) Maximum number of lines to which text should wrap. Defaults to 2.
• settings.fontFamily (string) Font face/family to use. Defaults to sans-serif.
• settings.startingSizePx (number) Starting font size (in px) to use. Defaults to 90.
• settings.minSizePx (number) Minimum font size (in px) to drop to. Takes higher priority than maxLines -- i.e. if text can't fit on maxLines lines at minSize, it'll return at minSize anyway. Defaults to 30.

For example, to specify that the text's width should be calculated using the font face Helvetica and contain at most three lines:

const text = "I know the kings of England, and I quote the fights historical " +
             "from Marathon to Waterloo, in order categorical. ";
const widthPx = 400;
const settings = { fontFamily: "Helvetica", maxLines: 3 };
const fittingFontSize = shrinkToFit(text, widthPx, settings);

Code of Conduct

We are committed to fostering an open and welcoming environment. Please read our code of conduct before participating in or contributing to this project.

Contributing

We welcome contributions and collaboration on this project. Please read our contributor's guide to understand how best to work with us.

License and Authors

Syncromatics Engineering

This software is made available by Syncromatics Engineering under the MIT license.