// Convert reveal.js slide decks to PDF. Use when the user asks to export slides to PDF, create a PDF from slides, or make a shareable version of a presentation.
| name | slides-to-pdf |
| description | Convert reveal.js slide decks to PDF. Use when the user asks to export slides to PDF, create a PDF from slides, or make a shareable version of a presentation. |
Convert a reveal.js HTML slide deck to a PDF file, preserving all styles and images.
Use Playwright to open the slides, navigate through each slide, capture a screenshot, and combine them into a PDF using Pillow.
from playwright.sync_api import sync_playwright
from PIL import Image
import os, time
html_path = 'INPUT_HTML_PATH'
pdf_path = html_path.replace('.html', '.pdf')
file_url = 'file:///' + os.path.abspath(html_path).replace(os.sep, '/')
with sync_playwright() as p:
browser = p.chromium.launch()
page = browser.new_page(viewport={'width': 1280, 'height': 720})
page.goto(file_url, wait_until='networkidle')
time.sleep(2)
total = page.evaluate('Reveal.getTotalSlides()')
print(f'Total slides: {total}')
screenshots = []
for i in range(total):
page.evaluate(f'Reveal.slide({i})')
time.sleep(0.3)
ss_path = f'.tmp/slide_{i:03d}.png'
page.screenshot(path=ss_path)
screenshots.append(ss_path)
browser.close()
# Combine into PDF
images = [Image.open(ss).convert('RGB') for ss in screenshots]
images[0].save(pdf_path, save_all=True, append_images=images[1:], resolution=150)
# Cleanup screenshots
for ss in screenshots:
os.remove(ss)
print(f'Done! {pdf_path} ({os.path.getsize(pdf_path) // 1024}KB)')
playwright Python package with Chromium browser installedPillow (PIL) for image-to-PDF conversionEnsure .tmp/ directory exists before running (create it if not).
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