Markdown Mobile Export

Faithful Markdown → mobile long image, no content rewriting.

When to Use

• Local .md file → phone-friendly long image
• Pasted Markdown text → PNG or JPG
• Article-style faithful export (not poster or carousel redesign)
• Intermediate HTML needed for inspection alongside image

Do Not Use

• Poster redesigns where content should be rewritten into marketing blocks
• Carousel slicing across multiple images
• Rich web app UI design work
• PDF output

Quick Start

# From file
python3 {baseDir}/scripts/markdown_to_long_image.py \
  --input-file /path/to/file.md

# From pasted text
python3 {baseDir}/scripts/markdown_to_long_image.py \
  --markdown-text "# Title\n\nBody"

# Custom output path and format
python3 {baseDir}/scripts/markdown_to_long_image.py \
  --input-file /path/to/file.md \
  --output-image /path/to/output.png \
  --format jpg

Defaults

Workflow

1. Resolve input (--input-file or --markdown-text)
2. Normalize pasted text into a concrete .source.md file when needed
3. Render mobile-friendly HTML with embedded CSS
4. Detect local Chromium-family browser
5. Capture full-page screenshot (segmented stitch with overlap)
6. Fall back to Playwright Chromium if no local browser is usable
7. Print JSON result with output_html and output_image paths

Scripts

References

Validation

After generating output, verify:

1. HTML file exists at reported path
2. Image file exists and is non-zero bytes
3. Image is full-page capture (not single viewport crop)
4. Remote images loaded without broken placeholders