How to make use of it:

1. Add instance text to the h1 tag.

<h1>CSS Text Shadow Generator</h1>

2. Build the HTML for the textual content shadow generator: settings, color/opacity, and outcome panels.

<div class="row">
  <div class="col-xl-4 col-md-6">
    <div class="card">
      <div class="card-header bg-primary">Settings:</div>
      <div class="card-body row row-cols-12">
        <label for="font_size">Font size</label>
        <input class="custom-range" id="font_size" type="range" min="8" max="40" step="1" value="40">
        <label for="offset_x">Set X</label>
        <input class="custom-range" id="offset_x" type="range" min="-15" max="15" step="1" value="4">
        <label for="offset_y">Set Y</label>
        <input class="custom-range" id="offset_y" type="range" min="-15" max="15" step="1" value="-1">
        <label for="blur">Blur</label>
        <input class="custom-range" id="blur" type="range" min="0" max="15" step="1" value="0">
      </div>
    </div>
  </div>
  <div class="col-xl-4 col-md-6">
    <div class="card">
      <div class="card-header bg-primary">Color:</div>
      <div class="card-body">
        <input type="color" value="#ff0000">
        <label for="opacity">Opacity</label>
        <input type="range" class="col-12" class="custom-range" id="opacity" min="0" max="1" step="0.01" value="1">
      </div>
    </div>
  </div>
  <div class="col-xl-4 col-md-6">
    <div class="card">
      <div class="card-header bg-primary">Result:</div>
      <div class="card-body">
        <label for="resultHex">Color in Hex</label>
        <textarea id="resultHex" rows="4" readonly></textarea><br>
        <label for="resultRgba">Color in RGBA</label>
        <textarea id="resultRgba" rows="3" readonly></textarea><br>
      </div>
    </div>
  </div>
</div>

3. The most important script to allow the text-shadow generator.

$(function () {
  function cssShadow({
    font_size,
    offset_x,
    offset_y,
    blur,
    opacity,
    color,
    rgba
  }) {
    var cssStyles = offset_x + 'px ' + offset_y + 'px ' + blur + 'px ' + rgba;
    $('h1').css('text-shadow', cssStyles);
    $('#resultHex').val('background-color: ' + color + ';\nopacity: ' + opacity + '\nfont-size: ' + font_size + 'px;');
    $('#resultRgba').val('text-shadow: '+offset_x + 'px ' + offset_y + 'px ' + blur + 'px ' + rgba + '\nfont-size: ' + font_size + 'px;');
    console.log(cssStyles);
  }
  cssShadow({
    font_size: 40,
    offset_x: 4,
    offset_y: 1,
    blur: 0,
    opacity: 1,
    color: '#ff0000',
    rgba: 'rgba(255,0,0,1)',
  });
  $(document).on('input change', 'input', function () {
    let font_size = $('#font_size').val();
    let offset_x = $('#offset_x').val();
    let offset_y = $('#offset_y').val();
    let blur = $('#blur').val();
    let opacity = $('#opacity').val();
    let color = $('input[type="color"]').val() + '';
    let red16 = color[1] + '' + color[2];
    let green16 = color[3] + '' + color[4];
    let blue16 = color[5] + '' + color[6];
    let red10 = parseInt(red16, 16);
    let green10 = parseInt(green16, 16);
    let blue10 = parseInt(blue16, 16);
    let rgba = 'rgba(' + red10 + ',' + green10 + ',' + blue10 + ',' + opacity + ')';

    $('h1').css('fontSize', font_size + 'px');
    cssShadow({
      font_size: font_size,
      offset_x: offset_x,
      offset_y: offset_y,
      blur: blur,
      opacity: opacity,
      color: color,
      rgba: rgba
    })
  })
});

Text Shadow CSS Generator, jQuery shadow generator Plugin/Github, css text shadow spread, text shadow inset

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