Dynamic font size component for ReactJS


To install, you can use npm:

$ npm install --save react-font-size-by-text-length

API documentation

Name Type Default Description
children ReactElement[] | ReactElement Children or Array of Children which include text, icons or other ReactElements
maxPercent number 100 Font size for the first char based on outside css rules
minPercent number 0 Specifies at which font size the component should not reduce further
changePerChar number How many percent per char should the font size change
startAtChar number 0 When passed string has this length the font size reduction begins
stopAtChar number Infinity When passed string has this length the font size reduction ends


Here are three simple example of react-font-size-by-text-length being used in an app:

import React from 'react';
import ReactDOM from 'react-dom';
import ReactFontSizeByTextLength from 'react-font-size-by-text-length';

function App() {
    const textArray = ["hello", "world"]
  return (
      // ---- Example One -----
      <ReactFontSizeByTextLength changePerChar={10}>
        <span>This text will be smaller</span>
      <ReactFontSizeByTextLength changePerChar={10}>
        <span>Than this text</span>

      // ---- Example Two -----
      <ReactFontSizeByTextLength changePerChar={5} startAtChar={2}>
          This works 
          <i class="fas fa-check-circle"></i>

        // ---- Example Three -----

        <ReactFontSizeByTextLength changePerChar={3} minPercent={50}>

ReactDOM.render(<App />, document.getElementById("root"));


There is one demo hosted on GitHub which
demonstrates how this component can be used in a calculator app:


View Github