A very simple React Hook and helper function to dynamically adjust the font size of an HTML element to fit its container. It uses a binary search algorithm for efficiency. Works right out of the box.

View Demo on CodeSandbox

• Installation
• Usage
  • useTextFit
  • fitText
• Examples
• License

Install the package via npm:

npm install use-simple-text-fit

Or if you prefer yarn:

yarn add use-simple-text-fit

A React Hook to automatically adjust the font size of an HTML element so that it fits its container.

const [ref, fit] = useTextFit(options?, deps?)

• options: An object containing min and max font sizes (optional).
• deps: React dependency array for the effect (optional).

• ref: A React ref to be attached to the HTML element.
• fit: A function that can be called to manually trigger a resize.

A helper function to manually adjust the font size of an HTML element so that it fits its container.

fitText(element, min, max)

• element: The HTML element to adjust.
• min: Minimum font size.
• max: Maximum font size.

import { useTextFit } from 'use-simple-text-fit';

const MyComponent = () => {
  const [ref, fit] = useTextFit();
  
  // Use fit to trigger a resize manually, or pass a dependency array to useTextFit

  return (
    <div ref={ref}>
      Text to fit
    </div>
  );
}

import { fitText } from 'use-simple-text-fit';

const element = document.querySelector('.my-element');
fitText(element, 10, 50);

MIT