Advanced Parameters Panel

A folding panel for power users: maximum answer length, top p, and stop words you can add and remove, with a reset to defaults.

Download the file Open full screen

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

Live preview

How to use it

Click Copy the code, or download the file.
Paste the CSS into your stylesheet, the HTML where you want the component, and the script before the closing body tag.
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>
<!--
  Advanced Parameters Panel: 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>Advanced Parameters Panel | Free AI UI Component</title>
<meta name="description" content="A folding panel for power users: maximum answer length, top p, and stop words you can add and remove, with a reset to defaults.">
<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%,580px);display:flex;flex-direction:column;gap:14px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}
.card h2{font-size:15.5px;margin:0 0 4px;color:var(--ink)}
.muted{color:var(--muted);font-size:13px}
.num{font-variant-numeric:tabular-nums}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:10px;padding:8px 14px;font-size:14px;font-weight:600;cursor:pointer}
.btn:hover{border-color:var(--accent)}.btn.pri{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.danger{color:var(--bad)}.btn.danger:hover{border-color:var(--bad)}
.tg{width:40px;height:23px;border-radius:99px;background:var(--line);position:relative;flex:none;border:0;cursor:pointer;padding:0;transition:background .15s}
.tg::after{content:"";position:absolute;top:3px;left:3px;width:17px;height:17px;border-radius:50%;background:#fff;transition:left .15s;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.tg[aria-checked=true]{background:var(--accent)}.tg[aria-checked=true]::after{left:20px}
.row{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:12px 0;border-top:1px solid var(--line)}
.row:first-of-type{border-top:0}
.row b{display:block;color:var(--ink);font-size:14px;font-weight:600}.row small{display:block;color:var(--muted);font-size:12.5px;margin-top:1px}
.seg{display:flex;background:var(--surface-2);border-radius:12px;padding:4px;gap:4px}
.seg button{flex:1;border:0;background:none;padding:8px 10px;border-radius:9px;font-size:14px;color:var(--muted);cursor:pointer;font-weight:500}
.seg button[aria-checked=true]{background:var(--surface);color:var(--ink);font-weight:700;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.sample{margin:14px 0 0;padding:12px 14px;border-radius:12px;background:var(--surface-2);font-size:14px;line-height:1.6;color:var(--text);transition:opacity .2s}
.sample small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
details.adv{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}
details.adv summary{list-style:none;display:flex;justify-content:space-between;align-items:center;padding:14px 18px;cursor:pointer;font-weight:700;color:var(--ink)}
details.adv summary::-webkit-details-marker{display:none}
details.adv summary svg{transition:transform .2s;color:var(--muted)}details.adv[open] summary svg{transform:rotate(180deg)}
.body{padding:4px 18px 18px;display:flex;flex-direction:column;gap:16px}
.f label{display:flex;justify-content:space-between;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:6px}
.f label span{color:var(--muted);font-weight:500}
.f input[type=number]{width:100%;border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:var(--surface);color:var(--ink)}
.f input[type=range]{width:100%;accent-color:var(--accent)}
.stops{display:flex;flex-wrap:wrap;gap:6px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:6px}
.stops:focus-within{border-color:var(--accent)}
.stop{display:inline-flex;align-items:center;gap:4px;background:var(--surface-2);border-radius:7px;padding:3px 4px 3px 8px;font:12.5px var(--mono);color:var(--ink)}
.stop button{border:0;background:none;color:var(--muted);cursor:pointer;display:grid;place-items:center;width:18px;height:18px;border-radius:5px}
.stops input{flex:1;min-width:120px;border:0;outline:0;background:none;color:var(--ink);padding:4px}
.ft{display:flex;justify-content:flex-end}
</style>
</head>
<body>
<div class="wrap">
  <details class="adv" open><summary>Advanced settings<svg viewBox="0 0 24 24" width="14" height="14" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M6 9l6 6 6-6"/></svg></summary><div class="body">
    <div class="f"><label for="mx">Maximum answer length <span>tokens</span></label><input id="mx" type="number" min="16" max="8192" step="16"></div>
    <div class="f"><label for="tp">Top p <span class="num" id="tpv"></span></label><input id="tp" type="range" min="0" max="1" step="0.05"></div>
    <div class="f"><label for="si">Stop words <span>press Enter to add</span></label><div class="stops" id="stops"><input id="si" placeholder="Add a word"></div></div>
    <div class="ft"><button class="btn" type="button" id="rs">Reset to defaults</button></div>
  </div></details>
</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;})();
var DEF={max:1024,top:0.9,stops:['###','User:']},st={};
var mx=document.getElementById('mx'),tp=document.getElementById('tp'),tpv=document.getElementById('tpv'),stops=document.getElementById('stops'),si=document.getElementById('si');
function chips(){[].slice.call(stops.querySelectorAll('.stop')).forEach(function(c){c.remove();});
  st.stops.forEach(function(w,i){var c=document.createElement('span');c.className='stop';c.textContent=w;var b=document.createElement('button');b.type='button';b.setAttribute('aria-label','Remove '+w);
    b.innerHTML='<svg viewBox=\"0 0 24 24\" width=\"14\" height=\"14\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" aria-hidden=\"true\"><path d=\"M6 6l12 12M18 6L6 18\"/></svg>';b.onclick=function(){st.stops.splice(i,1);chips();si.focus();};c.appendChild(b);stops.insertBefore(c,si);});}
function load(o){st={max:o.max,top:o.top,stops:o.stops.slice()};mx.value=st.max;tp.value=st.top;tpv.textContent=(+st.top).toFixed(2);chips();}
mx.addEventListener('change',function(){st.max=Math.min(8192,Math.max(16,+mx.value||DEF.max));mx.value=st.max;});
tp.addEventListener('input',function(){st.top=+tp.value;tpv.textContent=st.top.toFixed(2);});
si.addEventListener('keydown',function(e){var v=si.value.trim();if(e.key==='Enter'){e.preventDefault();if(v&&st.stops.indexOf(v)<0&&st.stops.length<8){st.stops.push(v);chips();}si.value='';}
  if(e.key==='Backspace'&&!si.value&&st.stops.length){st.stops.pop();chips();}});
document.getElementById('rs').addEventListener('click',function(){load(DEF);});
load(DEF);
</script>
</body>
</html>

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A settings list of switches for AI features like web search, memory and code running, each with a short explanation.

Advanced Parameters Panel

How to use it

What you get

The code

More model and settings components

Model Selection Cards

Creativity Slider

System Prompt Editor

Answer Length Control

Tone Selector

Feature Toggles