Customize: default

This is a built-in template. Saving stores a custom copy under the same name that shadows the built-in (the built-in is never modified).

Template name (lowercase, digits, hyphens) Template HTML (Jinja)

<!DOCTYPE html>
<html lang="en">
{# Lantern built-in sheet template: "default".
   Compact 3-zone header (logo · title · contact/requirements) to maximize the
   body; branded footer (log QR · Lantern mark + repo link · edit QR). #}
<head>
<meta charset="utf-8">
<style>
  @page { size: {{ page.css_size }}; margin: 0; }
  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    font-family: "Helvetica Neue", Arial, sans-serif;
    color: #111;
    width: {{ page.width }}; height: {{ page.height }};
    padding: 0.4in;
    display: flex; flex-direction: column;
  }

/* --- Compact header: logo | title | contact/requirements --- */
  header.sheet-head {
    display: grid;
    grid-template-columns: 1.1in 1fr 2.3in;
    align-items: center; gap: 0.2in;
    border-bottom: 2.5px solid #111; padding-bottom: 0.1in;
  }
  header .logo-cell img { max-height: 0.7in; max-width: 1.1in; display: block; }
  header .title { text-align: center; }
  header .title h1 { font-size: 21pt; margin: 0; line-height: 1.05; }
  header .info { font-size: 8pt; text-align: right; line-height: 1.3; }
  header .info .block { margin-bottom: 3pt; }
  header .info .label {
    text-transform: uppercase; letter-spacing: .04em; color: #666; font-size: 6.5pt;
  }

/* --- Body: a two-column grid (left markdown | right image/QR) --- */
  .body { flex: 1; font-size: 11pt; line-height: 1.38; overflow: hidden; padding-top: 0.14in; }
  .body h1 { font-size: 16pt; margin: .2em 0 .3em; }
  .body h2 { font-size: 13pt; border-bottom: 1px solid #ccc; padding-bottom: 2px; margin: .6em 0 .3em; }
  .body ul, .body ol { margin: .2em 0 .6em 1.2em; }
  .body li { margin: .12em 0; }
  .grid-row { display: grid; grid-template-columns: 1fr 2.1in; gap: 0.22in;
              align-items: start; margin-bottom: 0.1in; }
  .grid-row.full { grid-template-columns: 1fr; }
  .row-left > :first-child { margin-top: 0; }
  .row-right img { max-width: 2.1in; max-height: 2.4in; display: block; margin-left: auto; }
  .row-right.qr-cell { text-align: center; font-size: 7pt; word-break: break-all; }
  .row-right.qr-cell img { width: 1.5in; height: 1.5in; margin: 0 auto 2px; }

/* --- Branded footer: QR | brand + repo | QR --- */
  footer.sheet-foot {
    display: grid; grid-template-columns: 1in 1fr 1in; align-items: end;
    border-top: 2.5px solid #111; padding-top: 0.1in;
  }
  .qr { text-align: center; font-size: 7.5pt; }
  .qr img { width: 0.95in; height: 0.95in; display: block; margin: 0 auto 2px; }
  .brand { text-align: center; font-size: 7pt; color: #555; align-self: end; }
  .brand img { height: 0.65in; display: block; margin: 0 auto 2px; }
  .brand a { color: #555; text-decoration: none; }
</style>
</head>
<body>
  <header class="sheet-head">
    <div class="logo-cell">
      {% if logo_data %}<img src="{{ logo_data }}" alt="">{% endif %}
    </div>
    <div class="title"><h1>{{ sheet.title }}</h1></div>
    <div class="info">
      {% if sheet.contact.name %}
      <div class="block">
        <span class="label">Contact</span><br>{{ sheet.contact.name }}
        {% if sheet.contact.info %}<br>{{ sheet.contact.info }}{% endif %}
      </div>
      {% endif %}
      {% if sheet.requirements %}
      <div class="block"><span class="label">Requirements</span><br>{{ sheet.requirements }}</div>
      {% endif %}
    </div>
  </header>

<div class="body">
    {% for row in rows %}
    <div class="grid-row {{ 'full' if not row.image_data and not row.qr_data }}">
      <div class="row-left">{{ row.left_html | safe }}</div>
      {% if row.image_data %}
      <div class="row-right"><img src="{{ row.image_data }}" alt=""></div>
      {% elif row.qr_data %}
      <div class="row-right qr-cell"><img src="{{ row.qr_data }}" alt=""><div>{{ row.url }}</div></div>
      {% endif %}
    </div>
    {% endfor %}
  </div>

<footer class="sheet-foot">
    <div class="qr"><img src="{{ log_qr }}" alt="Log usage">Scan to LOG USE</div>
    <div class="brand">
      {% if brand_mark %}<img src="{{ brand_mark }}" alt="">{% endif %}
      <a href="{{ repo_url }}">{{ repo_url_display }}</a>
    </div>
    <div class="qr"><img src="{{ edit_qr }}" alt="Edit sheet">Scan to EDIT</div>
  </footer>
</body>
</html>

Your name Cancel

Available variables

Use these in your template. Render the procedure with {{ body_html | safe }}.

sheet.title: Sheet title
sheet.contact.name / sheet.contact.info: Contact person
sheet.requirements: Requirements / prerequisites text
rows: Body grid rows: each has left_html, kind, image_data, qr_data, url
body_html: Legacy: all rows' left columns joined (mark | safe)
logo_data: Uploaded logo as a data URI (or None)
brand_mark: Lantern brand mark as a data URI
log_qr / edit_qr: QR code data URIs
repo_url / repo_url_display: Project repo link
page.css_size / page.width / page.height: Page size (Letter/A4) + dimensions

Page size is US Letter. Keep the document to one page — overflow is detected on save.