The HTML behind it
Course certificate template HTML
This is the whole template. The fields in double braces fill from your data on every render. Copy it into your account and change anything you like.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<style data-thirds="base">
html,body{margin:0}
[data-thirds="canvas"]{position:relative;overflow:hidden}
[data-thirds="canvas"] [data-thirds]{position:absolute;box-sizing:border-box;margin:0}
[data-thirds="text"]{white-space:pre-wrap;overflow-wrap:anywhere}
[data-thirds="image"]{display:block}
[data-thirds="table"]{border-collapse:collapse}
[data-thirds="table"] th,[data-thirds="table"] td{padding:4px 6px;text-align:left;vertical-align:top;border-bottom:1px solid var(--rule,#dde1e8)}
[data-thirds="table"] th{background:var(--head,transparent)}
[data-thirds="list"]{display:flex;flex-direction:column}
[data-thirds="canvas"] [data-thirds="item"]{position:relative;flex:none}
</style>
<style>@page { size: 794px 1123px; margin: 0; } body { font-family: Arial, sans-serif; } [data-thirds="table"] th,[data-thirds="table"] td { padding: 12px; } </style>
</head>
<body>
<div data-thirds="canvas" data-thirds-kind="pdf" style="width:794px;height:1123px;background:white">
<div data-thirds="box" style="left:32px;top:32px;width:730px;height:1059px;background:white;border:2px solid #0a46ff"></div>
<div data-thirds="box" style="left:48px;top:48px;width:698px;height:1027px;background:white;border:1px solid #dde1e8"></div>
<div data-thirds="text" style="left:90px;top:120px;width:614px;height:22px;font-size:12px;color:#0a46ff;font-weight:700;line-height:1.25;letter-spacing:1.3px;text-transform:uppercase">{{ issuer }}</div>
<div data-thirds="text" style="left:90px;top:236px;width:614px;height:166px;font-size:56px;color:#0b0b0b;font-weight:700;line-height:1.25;text-align:center">Certificate of completion</div>
<div data-thirds="text" style="left:100px;top:454px;width:594px;height:34px;font-size:21px;color:#575f6d;font-weight:400;line-height:1.25;text-align:center">This certificate is awarded to</div>
<div data-thirds="text" style="left:80px;top:526px;width:634px;height:98px;font-size:50px;color:#0a46ff;font-weight:700;line-height:1.25;text-align:center">{{ learner }}</div>
<div data-thirds="box" style="left:130px;top:650px;width:534px;height:1px;background:#dde1e8"></div>
<div data-thirds="text" style="left:110px;top:705px;width:574px;height:38px;font-size:21px;color:#575f6d;font-weight:400;line-height:1.25;text-align:center">For completing</div>
<div data-thirds="text" style="left:95px;top:766px;width:604px;height:109px;font-size:28px;color:#0b0b0b;font-weight:700;line-height:1.25;text-align:center">{{ course }}</div>
<div data-thirds="text" style="left:105px;top:948px;width:584px;height:34px;font-size:18px;color:#575f6d;font-weight:400;line-height:1.25;text-align:center">{{ date }}</div>
</div>
</body>
</html>
Sample data
The values that made the picture.
Change any of them, and the same HTML makes a new file.
{
"issuer": "Fieldnote Learning",
"learner": "Alex Morgan",
"course": "A practical guide to clear project plans",
"date": "4 September 2026"
}