PDF to Long Image

Convert multi-page PDFs into a single vertical long image, useful for sharing documents as scrolling images or creating visual summaries.

Quick Start

# Basic usage
uv run python ~/.openclaw/skills/pdf-to-long-image/scripts/pdf_to_long_image.py input.pdf

# Specify output path
uv run python ~/.openclaw/skills/pdf-to-long-image/scripts/pdf_to_long_image.py input.pdf output.png

# Higher resolution
uv run python ~/.openclaw/skills/pdf-to-long-image/scripts/pdf_to_long_image.py input.pdf output.png --scale 3

How It Works

1. Opens the PDF using pymupdf (fitz)
2. Renders each page at the specified scale (default 2x for clarity)
3. Vertically concatenates all pages into a single image
4. Saves as optimized PNG

Options

Option	Default	Description
input	(required)	Path to the PDF file
output	input_long.png	Output image path
--scale	2.0	Render scale factor (higher = more detail)

Dependencies

The script requires these packages (install with uv):

uv pip install pymupdf pillow

Example Output

Converting 32 pages from document.pdf...
  Page 1/32: 1684x1190
  Page 2/32: 1684x1190
  ...
Done! Saved to: document_long.png
  Dimensions: 1684x38112 pixels
  File size: 11.23 MB

Script Location

~/.openclaw/skills/pdf-to-long-image/scripts/pdf_to_long_image.py