index.html

<link rel="stylesheet" type="text/css" href="code-beautifier.css">
<script src="code-beautifier.js"></script>

<!-- Code Beautifier for HTML, CSS and JavaScript -->
<!-- developed by Tawhidur Rahman Dear, https://www.tawhidurrahmandear.com -->
<!-- Live Preview available at https://www.devilhunter.net/p/code-beautifier.html -->

<div style="text-align: justify;"><span style="font-family: Ubuntu;">Format your HTML, CSS or JavaScript code to clean it up and beautify it. Make your HTML, CSS or JavaScript easier to read and validate it.</span></div>

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    <textarea class="code-beautifier_textarea" id="inputCode"></textarea>
      	<br><br>
    	<div>
        <button class="code-beautifier_button" onclick="beautifyCode('html')">Beautify HTML</button>
        <button class="code-beautifier_button" onclick="beautifyCode('css')">Beautify CSS</button>
        <button class="code-beautifier_button" onclick="beautifyCode('js')">Beautify JavaScript</button>
   		</div>
      	<br />
    <textarea class="code-beautifier_textarea" id="outputCode" readonly=""></textarea>
    <div id="notification"></div>
    <div>
        <button class="code-beautifier_button" onclick="clearAll()">Clear</button>
        <button class="code-beautifier_button" onclick="copyCode()">Copy Code</button>
    </div>