UnicodeVisualization/index.html at master · wichmann/UnicodeVisualization · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta name="theme-color" content="#448aff"/>
  <title>Unicode Visualization</title>

  <link rel="manifest" href="./app.webmanifest">
  <link rel="icon" type="image/x-icon" href="./images/favicon.ico">
  <link rel="apple-touch-icon" href="./images/app_icon_apple.png">
  <link rel="stylesheet" href="https://pyscript.net/releases/2025.8.1/core.css">
  <script type="module" src="https://pyscript.net/releases/2025.8.1/core.js"></script>
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet"
    integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">

  <style>
    a:link {
      color: black;
      text-decoration: none;
    }

    a:visited {
      color: black;
      text-decoration: none;
    }

    a:hover {
      color: blue;
      text-decoration: none;
    }

    a:active {
      color: black;
      text-decoration: none;
    }
  </style>
</head>

<body>
  <div class="container-xl" role="main">
    <div class="text-center ma-8">
      <h2>Unicode Visualization</h2>
    </div>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="input-form">
      <div class="card bg-light border-secondary">
        <div class="card-body">
          <h4 class="card-title">Input a Unicode Glyph ('Character') or Choose an Example</h4>
          <div class="row">
            <div class="col-auto my-2">
              <div class="input-group w-75">
                <input type="text" class="form-control" id="glyph" name="glyph" maxlength="10"
                  placeholder="Unicode Glyphs...">
                <button class="btn btn-outline-secondary" type="button" id="clear-button"><strong>⨉</strong></button>
              </div>
            </div>
            <div class="col-auto my-2">
              <span id="examples">
                <button id="example-button-1" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom" title="ASCII character positioned in the first 128 characters">a</button>
                <button id="example-button-2" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom"
                  title="Character from ISO 8859-15 charset, an extension of ASCII, using two bytes in UTF-8 encoding">ä</button>
                <button id="example-button-3" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom" title="Combination of a ASCII character with an Unicode mark (diaeresis)">ä (combined)</button>
                <button id="example-button-4" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom" title="Legacy Hangul character, using three bytes in UTF-8 encoding">참</button>
                <button id="example-button-5" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom" title="Combined Hangul character consisting of three separate code points">참 (combined)</button>
                <button id="example-button-7" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom"
                  title="Character from the ancient Linear B script, using four bytes in UTF-8 encoding">𐃅</button>
                <button id="example-button-6" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom"
                  title="A dingbat (an ornament, used in typesetting) character from the Basic Multilingual Plane (BMP)">❦</button>
                <button id="example-button-8" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom" title="Simple emoji from the Supplementary Multilingual Plane">🤓</button>
                <button id="example-button-9" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom" title="Emoji combining a multiple elements to convey its meaning">👩🏾‍🎤</button>
                <button id="example-button-10" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom"
                  title="Devanagari character combining seven code points to a single grapheme cluster">द्ध्र्य</button>
                <button id="example-button-11" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom"
                  title="Muslim ligature consisting of a single code point, using three bytes in UTF-8 encoding">ﷺ</button>
                <button id="example-button-12" class="btn btn-info my-1" data-bs-toggle="tooltip"
                  data-bs-placement="bottom" title="The word 'peace' in hebrew, written right-to-left (RTL)">שָׁלוֹם</button>
                <!-- More characters: 	👨‍👩‍👦  -->
              </span>
            </div>
            <div class="col-auto my-2 ms-auto">
              <button id="switch-binary-button" class="btn btn-dark"
                data-bs-toggle="tooltip" data-bs-placement="bottom"
                title="Switch between binary and hexadecimal presentation">
                <div class="font-monospace lh-1">&nbsp;&nbsp;</div>
                <div class="font-monospace lh-1">&nbsp;&nbsp;</div>
              </button>
              <button id="show-unicode-input-button" type="button" class="btn btn-dark" data-bs-toggle="modal"
                data-bs-target="#unicodeInputModal" data-bs-placement="bottom"
                title="Open window to directly input Unicode code points">
                <div class="font-monospace lh-1">U+...</div>
                <div class="font-monospace lh-1">U+...</div>
              </button>
            </div>
          </div>
        </div>
      </div>
    </div>
    <div id="character-list"></div>
    <div class="card bg-light border-secondary my-3">
      <div class="card-body" id="unicode-info">
        <h4 class="card-title">Unicode Information</h4>
        <p>"Unicode is an information technology standard for the consistent encoding, representation, and handling of
          text expressed in most of the world's writing systems. The standard, which is maintained by the Unicode
          Consortium, defines as of the <a target="_blank" href="https://blog.unicode.org/2025/09/unicode-170-release-announcement.html">current version (17.0)</a> 159,801 characters covering 172 modern and historic
          scripts, as well as symbols, emoji (including in colors), and non-visual control and formatting codes.</p>
        <p>The Unicode Standard, however, includes more than just the base code. Alongside the character encodings, the
          Consortium's official publication includes a wide variety of details about the scripts and how to display
          them: normalization rules, decomposition, collation, rendering, and bidirectional text display order for
          multilingual texts, and so on. The Standard also includes reference data files and visual charts to help
          developers and designers correctly implement the repertoire.</p>
        <p>Unicode can be stored using several different encodings, which translate the character codes into sequences
          of bytes. The Unicode standard defines three and several other encodings exist, all in practice
          variable-length
          encodings. The most common encodings are the ASCII-compatible UTF-8, the ASCII-incompatible UTF-16 (compatible
          with the obsolete UCS-2), and the Chinese Unicode encoding standard GB18030 which is not an official Unicode
          standard but is used in China and implements Unicode fully."
          <cite><a target="_blank" href="https://en.wikipedia.org/wiki/Unicode">Wikipedia: Unicode</a></cite>
        </p>
        <p>Unicode stores code points for characters in 17 planes containing 65,536 characters each. The maximum number
          of characters is reduced <a target="_blank" href="https://stackoverflow.com/a/5928054/18073555">by 2,048
            surrogates and 66 non-characters</a>: </p>
        <math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
          <mrow>
            <mn>17</mn>
            <mo rspace='thinmathspace'>&InvisibleTimes;</mo>
            <mi mathvariant='normal' class="MathML-Unit">Planes</mi>
            <mo rspace='thickmathspace'>⋅</mo>
            <mn>65,536</mn>
            <mo rspace='thinmathspace'>&InvisibleTimes;</mo>
            <mi class="MathML-Unit">Codepoints</mi>
            <mo>−</mo>
            <mn>2,048</mn>
            <mo rspace='thinmathspace'>&InvisibleTimes;</mo>
            <mi class="MathML-Unit">Surrogates</mi>
            <mo>−</mo>
            <mn>66</mn>
            <mo rspace='thinmathspace'>&InvisibleTimes;</mo>
            <mi class="MathML-Unit">Noncharacters</mi>
            <mo>=</mo>
            <mn>1,111,998</mn>
            <mo rspace='thinmathspace'>&InvisibleTimes;</mo>
            <mi class="MathML-Unit">Characters</mi>
          </mrow>
        </math>
      </div>
    </div>
    <div class="card bg-light border-secondary my-3">
      <div class="card-body" id="unicode-info">
        <h4 class="card-title">Web links</h4>
        <ul>
          <li><a href="https://www.unicode.org/reports/tr17/#CharactersVsGlyphs" target="_blank">Unicode Consortium:
              Characters vs. Glyphs</a></li>
          <li><a href="https://unicode.link" target="_blank">Unicode Visualizer</a></li>
          <li><a
              href="https://www.joelonsoftware.com/2003/10/08/the-absolute-minimum-every-software-developer-absolutely-positively-must-know-about-unicode-and-character-sets-no-excuses/"
              target="_blank">The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About
              Unicode and Character Sets (No Excuses!)</a></li>
          <li><a href="https://www.compart.com/de/unicode/" target="_blank">Information about Planes, Categories and
              Characters (german)</a></li>
          <li><a href="https://utf8everywhere.org" target="_blank">UTF-8 Everywhere (Manifesto)</a></li>
          <li><a href="https://unicodebook.readthedocs.io/index.html" target="_blank">Programming with Unicode</a></li>
        </ul>
      </div>
    </div>
    <div class="text-center" id="impressum">
      <p class="font-monospace"><a href="https://github.com/wichmann/UnicodeVisualization"
          target="_blank">https://github.com/wichmann/UnicodeVisualization</a></p>
    </div>

    <!-- Modal window to input Unicode code points to get the corresponding grapheme cluster -->
    <div class="modal fade" id="unicodeInputModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
      <div class="modal-dialog">
        <div class="modal-content">
          <div class="modal-header">
            <h5 class="modal-title" id="InputUnicodeCodepointsModalLabel">Input Unicode code points directly...</h5>
            <button id="close-modal-button" type="button" class="btn-close" data-bs-dismiss="modal"
              aria-label="Close"></button>
          </div>
          <div class="modal-body">
            <form class="row g-2">
              <div class="col-auto">
                <input type="text" class="form-control my-2" id="unicode-codepoint" name="unicode-codepoint"
                  maxlength="8" placeholder="Unicode Code Points..." value="U+">
              </div>
              <div class="col-3">
                <div class="text-center display-6" id="found-code-point"></div>
              </div>
              <div class="col-auto ms-auto">
                <button class="btn btn-outline-secondary my-2" type="button" id="remove-codepoint-button"><strong>⨉</strong></button>
              </div>
            </form>
            <!--button class="btn btn-outline-secondary my-3" type="button" id="add-codepoint-button">Add more code points...</button-->
          </div>
          <div class="modal-footer">
            <button id="copy-character-button" type="button" class="btn btn-secondary" data-bs-dismiss="modal">Copy character</button>
          </div>
        </div>
      </div>
    </div>

    <!-- Toast for error messages -->
    <div class="toast-container position-fixed bottom-0 end-0 p-3">
      <div id="showErrorToast" class="toast" role="alert" aria-live="assertive" aria-atomic="true">
        <div class="toast-header text-bg-danger">
          <strong class="me-auto">Error</strong>
          <small>now</small>
          <button type="button" class="btn-close" data-bs-dismiss="toast" aria-label="Close"></button>
        </div>
        <div class="toast-body">
          You selected a character that is not supported!
        </div>
      </div>
    </div>

    <!-- Template for creating rows of character information -->
    <template id="character-template">
      <div class="character">
        <div class="row my-3">
          <div class="col col-2">
            <div class="card bg-light border-secondary">
              <div class="card-body text-center">
                <h4 class="card-title">Character</h4>
                <div class="character-info"></div>
              </div>
            </div>
          </div>
          <div class="col col-5">
            <div class="card">
              <div class="card-body">
                <h4 class="card-title">Code Point</h4>
                <div class="codepoint-info"></div>
              </div>
            </div>
          </div>
          <div class="col col-5">
            <div class="card">
              <div class="card-body">
                <h4 class="card-title">Character Encoding</h4>
                <div class="encoding-info"></div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </template>
  </div>

  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/js/bootstrap.bundle.min.js"
    integrity="sha384-w76AqPfDkMBDXo30jS1Sgez6pr3x5MlQ1ZAGC+nuZB+EYdgRZgiwxhTBTkF7CXvN"
    crossorigin="anonymous"></script>
  <script>
    // enable tooltips everywhere (https://getbootstrap.com/docs/5.0/components/tooltips/#example-enable-tooltips-everywhere)
    var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'))
    var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
      return new bootstrap.Tooltip(tooltipTriggerEl)
    })
    // handle tooltip for button to open modal window separately
    var tooltipModal = new bootstrap.Tooltip(document.getElementById('show-unicode-input-button'));
  </script>
  <script type="py" src="unicode.py" config="pyscript.toml"></script>
  <script src="src/pwa.js"></script>
</body>

</html>