Paste either snippet into your page — a Custom HTML block on WordPress, Shopify, or Squarespace works too. Both snippets update live as you customize, so what you copy is exactly what you configured.
<!-- Free Scheduler Button widget by haynes lab — https://hayneslab.dev/tools/widgets/scheduler-button -->
<script data-hl-link="https://cal.com/" data-hl-label="Book a free consultation" data-hl-subtext="Usually replies within 1 business day" data-hl-position="floating">
/*!
* haynes lab — Scheduler Button widget (free)
* Docs & embed code: https://hayneslab.dev/tools/widgets/scheduler-button
*/
(function () {
'use strict';
var PREFIX = 'hlw-scheduler-button';
var STYLE_ID = 'hlw-scheduler-button-styles';
function findScript() {
return document.currentScript ||
document.querySelector('script[src*="widgets/scheduler-button.js"]');
}
function injectStyles() {
if (document.getElementById(STYLE_ID)) return;
var css =
'.' + PREFIX + ', .' + PREFIX + ' * { box-sizing: border-box; }' +
'.' + PREFIX + ' { font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;' +
' font-size: 16px; line-height: 1.5; color: #1f2937; }' +
'.' + PREFIX + '--inline { display: flex; flex-direction: column; align-items: center; gap: 8px;' +
' padding: 16px; text-align: center; }' +
'.' + PREFIX + '--floating { position: fixed; right: 20px; bottom: 20px; z-index: 99999;' +
' display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }' +
'.' + PREFIX + '--floating.' + PREFIX + '--in-stage { position: absolute; z-index: 10; }' +
'.' + PREFIX + '__button { display: inline-flex; align-items: center; gap: 10px; padding: 14px 28px;' +
' border: 0; border-radius: 999px; background: #f97316; color: #ffffff; font-size: 16px; font-weight: 600;' +
' font-family: inherit; line-height: 1.2; text-decoration: none; cursor: pointer;' +
' box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15); transition: transform 0.15s ease, box-shadow 0.15s ease; }' +
'.' + PREFIX + '__button:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2); }' +
'.' + PREFIX + '__button:focus-visible { outline: 2px solid #1f2937; outline-offset: 3px; }' +
'.' + PREFIX + '__button svg { display: block; flex: 0 0 auto; }' +
'.' + PREFIX + '__subtext { margin: 0; font-size: 13px; color: #6b7280; }' +
'.' + PREFIX + '--floating .' + PREFIX + '__subtext { padding: 4px 10px; background: #ffffff;' +
' border: 1px solid #e5e7eb; border-radius: 999px; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); }' +
'.' + PREFIX + '__credit { font-size: 11px; display: inline-flex; align-items: center; gap: 4px;' +
' color: #9ca3af; text-decoration: none; }' +
'.' + PREFIX + '__credit svg { display: block; }' +
'.' + PREFIX + '__credit:hover { color: #6b7280; text-decoration: underline; }' +
'@media (max-width: 560px) {' +
' .' + PREFIX + '--floating { right: 14px; bottom: 14px; }' +
' .' + PREFIX + '__button { padding: 12px 22px; font-size: 15px; } }';
var style = document.createElement('style');
style.id = STYLE_ID;
style.textContent = css;
document.head.appendChild(style);
}
function el(tag, className, text) {
var node = document.createElement(tag);
if (className) node.className = className;
if (text != null) node.textContent = text;
return node;
}
function calendarSvg() {
var svgNS = 'http://www.w3.org/2000/svg';
var svg = document.createElementNS(svgNS, 'svg');
svg.setAttribute('viewBox', '0 0 24 24');
svg.setAttribute('width', '18');
svg.setAttribute('height', '18');
svg.setAttribute('fill', 'none');
svg.setAttribute('stroke', 'currentColor');
svg.setAttribute('stroke-width', '2');
svg.setAttribute('stroke-linecap', 'round');
svg.setAttribute('stroke-linejoin', 'round');
svg.setAttribute('aria-hidden', 'true');
svg.setAttribute('focusable', 'false');
var shapes = [
['rect', { x: 3, y: 4, width: 18, height: 18, rx: 2 }],
['line', { x1: 16, y1: 2, x2: 16, y2: 6 }],
['line', { x1: 8, y1: 2, x2: 8, y2: 6 }],
['line', { x1: 3, y1: 10, x2: 21, y2: 10 }],
];
shapes.forEach(function (s) {
var node = document.createElementNS(svgNS, s[0]);
for (var key in s[1]) node.setAttribute(key, s[1][key]);
svg.appendChild(node);
});
return svg;
}
function logoSvg() {
var svgNS = 'http://www.w3.org/2000/svg';
var svg = document.createElementNS(svgNS, 'svg');
svg.setAttribute('viewBox', '0 0 32 32');
svg.setAttribute('width', '13');
svg.setAttribute('height', '13');
svg.setAttribute('aria-hidden', 'true');
svg.setAttribute('focusable', 'false');
function circle(cx, cy, r, attrs) {
var c = document.createElementNS(svgNS, 'circle');
c.setAttribute('cx', cx);
c.setAttribute('cy', cy);
c.setAttribute('r', r);
for (var key in attrs) c.setAttribute(key, attrs[key]);
svg.appendChild(c);
}
circle(16, 16, 16, { fill: '#0f0a0a' });
circle(16, 16, 12, { fill: 'none', stroke: '#fff5f5', 'stroke-width': 1, opacity: 0.3 });
circle(16, 16, 9, { fill: 'none', stroke: '#fff5f5', 'stroke-width': 1, opacity: 0.5 });
circle(16, 16, 6, { fill: 'none', stroke: '#fff5f5', 'stroke-width': 1.2, opacity: 0.9 });
circle(16, 16, 3, { fill: '#06b6d4' });
circle(24.5, 7.5, 2, { fill: '#f97316' });
circle(7, 16, 1.8, { fill: '#f97316' });
circle(20, 20, 1.5, { fill: '#f97316' });
return svg;
}
function build(script) {
var link = script.getAttribute('data-hl-link');
if (!link) {
console.warn('[haynes lab scheduler-button] Missing required data-hl-link attribute (your Calendly or Cal.com URL). Nothing rendered.');
return;
}
var label = script.getAttribute('data-hl-label') || 'Book a call';
var subtext = script.getAttribute('data-hl-subtext');
var bg = script.getAttribute('data-hl-bg') || '#f97316';
var floating = script.getAttribute('data-hl-position') === 'floating';
var stage = script.closest('.widget-demo__stage');
injectStyles();
var root = el('div', PREFIX + ' ' + PREFIX + (floating ? '--floating' : '--inline'));
var button = el('a', PREFIX + '__button');
button.href = link;
button.target = '_blank';
button.rel = 'noopener';
button.style.background = bg;
button.appendChild(calendarSvg());
button.appendChild(el('span', null, label));
root.appendChild(button);
if (subtext) root.appendChild(el('p', PREFIX + '__subtext', subtext));
var credit = el('a', PREFIX + '__credit');
credit.appendChild(logoSvg());
credit.appendChild(document.createTextNode('Powered by haynes lab'));
credit.href = 'https://hayneslab.dev/tools/widgets/scheduler-button';
credit.target = '_blank';
credit.rel = 'noopener';
root.appendChild(credit);
if (floating) {
if (stage) {
root.classList.add(PREFIX + '--in-stage');
stage.appendChild(root);
} else {
document.body.appendChild(root);
}
} else if (script.parentNode && script.parentNode.nodeName !== 'HEAD') {
script.insertAdjacentElement('afterend', root);
} else {
document.body.appendChild(root);
}
}
function init() {
var script = findScript();
if (!script) {
console.warn('[haynes lab scheduler-button] Could not locate its own script tag. Nothing rendered.');
return;
}
build(script);
}
if (document.body) {
init();
} else {
document.addEventListener('DOMContentLoaded', init);
}
})();
</script>