100 Free AI UI Components

Code Block with Copy Button

A code block with a language label, a copy button that confirms when done, and a button to wrap long lines.

Download the fileOpen full screen

One HTML file with the CSS and JavaScript inside. No library needed. MIT license.

Live preview

How to use it

  1. Click Copy the code, or download the file.
  2. Paste the CSS into your stylesheet, the HTML where you want the component, and the script before the closing body tag.
  3. Change --accent at the top of the CSS to your brand color, then connect the events to your AI service.

What you get

  • Works in light and dark mode automatically
  • Keyboard friendly, with labels for screen readers
  • Fits phones, tablets and desktops
  • Respects the reduced motion setting
  • No framework, so it works with any stack

The code

<!DOCTYPE html>
<!--
  Code Block with Copy Button: a free AI UI component
  From 100 Free AI UI Components by MM Rahman Bappi, MIT license
  https://mmrahmanbappi.github.io/100-free-ai-ui-components/

  How to use: copy the CSS, HTML and JavaScript below into your page.
  Colors are CSS variables at the top. Change --accent to match your brand.
  Light and dark themes follow the visitor's system setting, or set
  data-theme="dark" or data-theme="light" on the html element.
-->
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Code Block with Copy Button | Free AI UI Component</title>
<meta name="description" content="A code block with a language label, a copy button that confirms when done, and a button to wrap long lines.">
<meta name="robots" content="noindex, follow">
<style>
:root{
  --accent:#5b5bd6; --accent-ink:#fff; --accent-soft:#ececfc;
  --bg:#f7f7f8; --surface:#fff; --surface-2:#f1f1f4; --ink:#17171c; --text:#3a3a44; --muted:#6c6c78;
  --line:#e3e3e8; --good:#15803d; --warn:#b45309; --bad:#c62828;
  --radius:14px; --shadow:0 1px 2px rgba(20,20,30,.06),0 8px 24px -12px rgba(20,20,30,.18);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,sans-serif; --mono:ui-monospace,"Cascadia Code",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
  --accent:#8b8bff; --accent-ink:#0f0f16; --accent-soft:#25254a;
  --bg:#0f0f13; --surface:#18181f; --surface-2:#212129; --ink:#f3f3f6; --text:#d4d4dc; --muted:#9a9aa8;
  --line:#2c2c36; --good:#4ade80; --warn:#fbbf24; --bad:#f87171; --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -12px rgba(0,0,0,.6);
}}
:root[data-theme=dark]{
  --accent:#8b8bff; --accent-ink:#0f0f16; --accent-soft:#25254a;
  --bg:#0f0f13; --surface:#18181f; --surface-2:#212129; --ink:#f3f3f6; --text:#d4d4dc; --muted:#9a9aa8;
  --line:#2c2c36; --good:#4ade80; --warn:#fbbf24; --bad:#f87171; --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -12px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html,body{margin:0}
body{min-height:100vh;display:grid;grid-template-columns:minmax(0,1fr);place-items:center;padding:24px;background:var(--bg);color:var(--text);font:15px/1.5 var(--font);-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition:none!important}}
/* ---- component ---- */
.wrap{width:min(100%,660px);display:flex;flex-direction:column;gap:16px}
.ai,.me{display:flex;gap:12px;align-items:flex-start}
.me{flex-direction:row-reverse}
.av{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;flex:none;font-size:13px;font-weight:700}
.ai .av{background:var(--accent);color:var(--accent-ink)}.me .av{background:var(--surface-2);color:var(--ink);border:1px solid var(--line)}
.col{display:flex;flex-direction:column;gap:6px;min-width:0;max-width:calc(100% - 44px)}
.me .col{align-items:flex-end}
.bubble{background:var(--surface);border:1px solid var(--line);border-radius:4px 16px 16px 16px;padding:11px 15px;color:var(--text);box-shadow:var(--shadow);min-width:0;overflow-wrap:anywhere}
.me .bubble{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);border-radius:16px 4px 16px 16px;box-shadow:none}
.meta{font-size:12px;color:var(--muted)}
.tb{display:flex;gap:2px;align-items:center}
.tb button{display:inline-flex;align-items:center;gap:6px;border:0;background:none;color:var(--muted);height:30px;min-width:30px;padding:0 7px;border-radius:8px;cursor:pointer;font-size:13px}
.tb button:hover{background:var(--surface-2);color:var(--ink)}
.cb{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--surface-2);margin-top:8px}
.cbh{display:flex;align-items:center;justify-content:space-between;padding:4px 6px 4px 12px;border-bottom:1px solid var(--line);background:var(--surface)}
.lang{font-family:var(--mono);font-size:12px;color:var(--muted)}
.cb pre{margin:0;padding:12px 14px;overflow-x:auto;font:13px/1.6 var(--mono);color:var(--ink);tab-size:2}
.cb.wrapl pre{white-space:pre-wrap;word-break:break-word}
.k{color:#6f3fc9}.s{color:#086a42}.c{color:var(--muted);font-style:italic}.f{color:#0969da}
:root[data-theme=dark] .k{color:#c297ff}:root[data-theme=dark] .s{color:#7ee2a8}:root[data-theme=dark] .f{color:#79b8ff}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .k{color:#c297ff}:root:not([data-theme=light]) .s{color:#7ee2a8}:root:not([data-theme=light]) .f{color:#79b8ff}}
</style>
</head>
<body>
<div class="wrap">
  <div class="ai"><div class="av" aria-hidden="true"><svg viewBox="0 0 24 24" width="16" height="16" fill="currentColor" aria-hidden="true"><path d="M12 2l1.8 6.2L20 10l-6.2 1.8L12 18l-1.8-6.2L4 10l6.2-1.8z"/></svg></div><div class="col" style="flex:1"><div class="bubble">Here is a small function that counts words in a text:
    <div class="cb" id="cb"><div class="cbh"><span class="lang">javascript</span><div class="tb">
      <button type="button" id="wr" aria-pressed="false"><span>Wrap</span></button>
      <button type="button" id="cp"><svg viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><rect x="9" y="9" width="12" height="12" rx="2"/><path d="M5 15V5a2 2 0 012-2h10"/></svg><span>Copy</span></button></div></div>
<pre id="code"><code><span class="c">// Count the words in a piece of text</span>
<span class="k">function</span> <span class="f">countWords</span>(text) {
  <span class="k">const</span> words = text.trim().split(<span class="s">/\s+/</span>).filter(Boolean);
  <span class="k">return</span> words.length;
}

console.<span class="f">log</span>(<span class="f">countWords</span>(<span class="s">"The quick brown fox jumps over the lazy dog and keeps running"</span>)); <span class="c">// 12</span></code></pre></div>
  </div></div></div>
</div>
<script>
// Demo helper: add ?theme=dark or ?theme=light to the address to preview a theme.
(function(){var t=new URLSearchParams(location.search).get('theme');if(t)document.documentElement.dataset.theme=t;})();
function copyText(text){if(navigator.clipboard&&window.isSecureContext){return navigator.clipboard.writeText(text).catch(fallback);}return Promise.resolve(fallback());
  function fallback(){var t=document.createElement('textarea');t.value=text;t.setAttribute('readonly','');t.style.position='fixed';t.style.opacity='0';document.body.appendChild(t);t.select();try{document.execCommand('copy');}catch(e){}document.body.removeChild(t);}}
function flash(btn,label){var span=btn.querySelector('span')||btn,old=span.textContent;span.textContent=label;btn.setAttribute('aria-live','polite');setTimeout(function(){span.textContent=old;},1500);}
var cp=document.getElementById('cp'),wr=document.getElementById('wr'),cb=document.getElementById('cb');
cp.addEventListener('click',function(){copyText(document.getElementById('code').innerText).then(function(){flash(cp,'Copied');});});
wr.addEventListener('click',function(){var on=cb.classList.toggle('wrapl');wr.setAttribute('aria-pressed',on);});
</script>
</body>
</html>

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