SKILL.md

$2a

This runs automatically on every PDF generation. No flags needed.

CRITICAL: Fit Content to Single Page

**Backgrounds on html or body cause extra pages!** Put backgrounds on a container element instead:

@page { size: A4; margin: 0; }

html, body {

  width: 210mm;

  height: 297mm;

  margin: 0;

  padding: 0;

  overflow: hidden;

  /* NO background here! */

}

.container {

  width: 100%;

  height: 100%;

  padding: 20mm;

  box-sizing: border-box;

  background: linear-gradient(...); /* Background goes HERE */

}

Common causes of extra pages:

Background on html/body - always put on .container instead

Content overflow - use overflow: hidden

Margins/padding pushing content out

Tips:

Use --scale=0.75 --margin=0 if content still overflows

For landscape: use --landscape

Setup (One-time)

Before first use, install dependencies:

cd ~/.claude/skills/html-to-pdf &#x26;&#x26; npm install

Quick Usage

Convert local HTML file:

node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js input.html output.pdf

Convert URL to PDF:

node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js https://example.com page.pdf

Hebrew document with forced RTL:

node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js hebrew.html hebrew.pdf --rtl

Pipe HTML content:

echo "<h1>שלום עולם</h1>" | node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js - output.pdf --rtl

Options Reference

Option

Description

Default

--format=<format>

Page format: A4, Letter, Legal, A3, A5

--landscape

Use landscape orientation

false

--margin=<value>

Set all margins (e.g., "20mm", "1in")

20mm

--margin-top=<value>

Top margin

20mm

--margin-right=<value>

Right margin

20mm

--margin-bottom=<value>

Bottom margin

20mm

--margin-left=<value>

Left margin

20mm

--scale=<number>

Scale factor 0.1-2.0

--background

Print background graphics

true

--no-background

Don't print backgrounds

--header=<html>

Header HTML template

--footer=<html>

Footer HTML template

--wait=<ms>

Wait time for fonts/JS

1000

--rtl

Force RTL direction

auto-detect

--expect-pages=<N>

Expected page count (warns if different)

--no-page-check

Disable page count warning

Automatic Overflow Detection

The script automatically checks page count after generating the PDF. By default, it expects 1 page and warns if the output has more:

⚠️  WARNING: PAGE OVERFLOW DETECTED!

   Expected: 1 page(s)

   Actual:   2 page(s)

   Fix: Reduce content, margins, or font sizes in HTML

   Use --no-page-check to disable this warning

Usage:

Default: expects 1 page, warns on overflow

--expect-pages=3: expects 3 pages (for multi-page documents)

--no-page-check: disables the check entirely

Note: Requires pdfinfo to be installed (part of poppler-utils). If not available, the check is silently skipped.

Examples

Basic conversion:

node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js report.html report.pdf

Letter format with custom margins:

node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js doc.html doc.pdf --format=Letter --margin=1in

Hebrew invoice:

node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js invoice-he.html invoice.pdf --rtl

Landscape presentation:

node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js slides.html slides.pdf --landscape --format=A4

No margins (full bleed):

node ~/.claude/skills/html-to-pdf/scripts/html-to-pdf.js poster.html poster.pdf --margin=0

Hebrew/RTL Best Practices

For best Hebrew rendering in your HTML:

Set lang attribute: <html lang="he" dir="rtl">

Use UTF-8: <meta charset="UTF-8">

CSS direction: Add direction: rtl; text-align: right; to body

Fonts: Use web fonts that support Hebrew (Noto Sans Hebrew, Heebo, Assistant)

Example Hebrew HTML structure (single-page):

<!DOCTYPE html>

<html lang="he" dir="rtl">

<head>

  <meta charset="UTF-8">

  <link href="https://fonts.googleapis.com/css2?family=Heebo:wght@400;700&#x26;display=swap" rel="stylesheet">

  <style>

    @page { size: A4; margin: 0; }

    html, body {

      width: 210mm;

      height: 297mm;

      margin: 0;

      padding: 0;

      overflow: hidden;

    }

    .container {

      width: 100%;

      height: 100%;

      padding: 20mm;

      box-sizing: border-box;

      font-family: 'Heebo', sans-serif;

      direction: rtl;

      text-align: right;

      background: #f5f5f5; /* Background on container, NOT body */

    }

  </style>

</head>

<body>

  <div class="container">

    <h1>שלום עולם</h1>

    <p>זהו מסמך בעברית</p>

  </div>

</body>

</html>

CRITICAL: Always Use scale=1.0 for Multi-Page PDFs

**NEVER use --scale < 1.0 for multi-page documents.** It causes:

Content offset (not centered on page)

RTL text overflow/clipping in grid layouts

Unpredictable viewport width calculations

Instead: reduce CSS font sizes and spacing to fit content at scale=1.0.

.page {

  width: 210mm;         /* Matches A4 exactly at scale=1.0 */

  height: 297mm;        /* Matches A4 exactly at scale=1.0 */

  padding: 8mm 10mm 12mm;

  page-break-after: always;

  position: relative;

  background: #f7f8fa;

  overflow: hidden;

  box-sizing: border-box;

}

If content overflows at scale=1.0: reduce font sizes (10-11px base), padding, margins — NOT the scale. This keeps 1:1 mapping between CSS and PDF, eliminating all layout artifacts.

Color tip: Pure white (#fff) backgrounds wash out colored accents. Use #f7f8fa or #f8fafb for subtle contrast that makes colors pop.

Troubleshooting

Fonts not rendering correctly

Add --wait=2000 for more font loading time

Ensure fonts are loaded via @font-face or Google Fonts

Hebrew appearing left-to-right

Use --rtl flag to force RTL direction

Add dir="rtl" to your HTML element

Page breaks not working

Use CSS page-break properties:

.page-break { page-break-after: always; }

.no-break { page-break-inside: avoid; }

Backgrounds not showing

Ensure --background is set (default is true)

Use --no-background only if you want to exclude backgrounds

Auto-Fit Content (MANDATORY VERIFICATION)

CRITICAL - Claude MUST do this after EVERY PDF generation:

Read the PDF file using the Read tool to visually inspect it

Check for vertical overflow (empty pages, content spilling to next page)

Check for horizontal overflow (text cut off at sides)

If ANY issue found → FIX and regenerate (max 5 attempts)

Only deliver PDF to user after verification passes

This is NOT optional. Never deliver a PDF without visual verification.

Problems to Look For

Problem

Symptom

Fix

Vertical overflow

Empty space at page bottom, content on next page

Reduce --scale

Horizontal cut-off

Text cut at left/right edges

Reduce --margin AND fix HTML width

Both issues

Content cut AND extra pages

Fix HTML CSS first, then adjust scale

Fix Strategy (Max 5 Attempts)

Attempt 1: Default settings

node scripts/html-to-pdf.js input.html output.pdf

Attempt 2: If vertical overflow → reduce scale

node scripts/html-to-pdf.js input.html output.pdf --scale=0.9

Attempt 3: If horizontal cut-off → reduce margins

node scripts/html-to-pdf.js input.html output.pdf --scale=0.9 --margin=10mm

Attempt 4: If still issues → smaller scale + margins

node scripts/html-to-pdf.js input.html output.pdf --scale=0.8 --margin=5mm

Attempt 5: If still failing → FIX THE HTML CSS:

/* Add to HTML to prevent horizontal overflow */

.container {

  width: 100%;

  max-width: 100%;

  overflow-wrap: break-word;

  word-wrap: break-word;

  box-sizing: border-box;

}

STOP after 5 attempts - regenerate HTML with proper constraints.

HTML Width Fix (Required for Horizontal Fit)

If content is cut at sides, the HTML MUST have:

html, body {

  width: 210mm;  /* A4 width */

  margin: 0;

  padding: 0;

  overflow: hidden;

}

.container {

  width: 100%;

  max-width: 100%;

  padding: 15mm;

  box-sizing: border-box;

  overflow-wrap: break-word;

}

Verification Checklist

After EVERY PDF generation, verify:

All text visible (not cut at edges)

No unnecessary empty pages

Content fills pages properly

No large gaps between sections

If ANY check fails → adjust and regenerate (max 5 times).

Technical Notes

Uses Puppeteer with Chrome headless for rendering

Waits for networkidle0 to ensure all resources load

Automatically waits for document.fonts.ready

Supports @page CSS rules for print styling

Device scale factor set to 2 for crisp rendering

html-to-pdf

SKILL.md

CRITICAL: Fit Content to Single Page

Setup (One-time)

Quick Usage

Convert local HTML file:

Convert URL to PDF:

Hebrew document with forced RTL:

Pipe HTML content:

Options Reference

Automatic Overflow Detection

Examples

Basic conversion:

Letter format with custom margins:

Hebrew invoice:

Landscape presentation:

No margins (full bleed):

Hebrew/RTL Best Practices

Example Hebrew HTML structure (single-page):

CRITICAL: Always Use scale=1.0 for Multi-Page PDFs

Troubleshooting

Fonts not rendering correctly

Hebrew appearing left-to-right

Page breaks not working

Backgrounds not showing

Auto-Fit Content (MANDATORY VERIFICATION)

Problems to Look For

Fix Strategy (Max 5 Attempts)

HTML Width Fix (Required for Horizontal Fit)

Verification Checklist

Technical Notes

Let your agent run on any real-world website

Related skills

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