publish-to-pages

Publish presentations and web content to GitHub Pages. Converts PPTX, PDF, HTML, or Google Slides to a live GitHub Pages URL. Handles repo creation, file…

INSTALLATION
npx skills add https://github.com/github/awesome-copilot --skill publish-to-pages
Run in your project or agent environment. Adjust flags if your CLI version differs.

SKILL.md

$27

Input

Detection

HTML file

Extension .html or .htm

PPTX file

Extension .pptx

PDF file

Extension .pdf

Google Slides URL

URL contains docs.google.com/presentation

Ask the user for a repo name if not provided. Default: filename without extension.

3. Conversion

Large File Handling

Both conversion scripts automatically detect large files and switch to external assets mode:

  • PPTX: Files >20MB or with >50 images → images saved as separate files in assets/
  • PDF: Files >20MB or with >50 pages → page PNGs saved in assets/
  • Files >150MB print a warning (PPTX suggests PDF path instead)

This keeps individual files well under GitHub's 100MB limit. Small files still produce a single self-contained HTML.

You can force the behavior with --external-assets or --no-external-assets.

HTML

No conversion needed. Use the file directly as index.html.

PPTX

Run the conversion script:

python3 SKILL_DIR/scripts/convert-pptx.py INPUT_FILE /tmp/output.html

# For large files, force external assets:

python3 SKILL_DIR/scripts/convert-pptx.py INPUT_FILE /tmp/output.html --external-assets

If python-pptx is missing, tell the user: pip install python-pptx

PDF

Convert with the included script (requires poppler-utils for pdftoppm):

python3 SKILL_DIR/scripts/convert-pdf.py INPUT_FILE /tmp/output.html

# For large files, force external assets:

python3 SKILL_DIR/scripts/convert-pdf.py INPUT_FILE /tmp/output.html --external-assets

Each page is rendered as a PNG and embedded into HTML with slide navigation.

If pdftoppm is missing, tell the user: apt install poppler-utils (or brew install poppler on macOS).

Google Slides

  • Extract the presentation ID from the URL (the long string between /d/ and /)
  • Download as PPTX:
curl -L "https://docs.google.com/presentation/d/PRESENTATION_ID/export/pptx" -o /tmp/slides.pptx
  • Then convert the PPTX using the convert script above.

4. Publishing

Visibility

Repos are created public by default. If the user specifies private (or wants a private repo), use --private — but note that GitHub Pages on private repos requires a Pro, Team, or Enterprise plan.

Publish

bash SKILL_DIR/scripts/publish.sh /path/to/index.html REPO_NAME public "Description"

Pass private instead of public if the user requests it.

The script creates the repo, pushes index.html (plus assets/ if present), and enables GitHub Pages.

Note: When external assets mode is used, the output HTML references files in assets/. The publish script automatically detects and copies the assets/ directory alongside the HTML file. Make sure the HTML file and its assets/ directory are in the same parent directory.

5. Output

Tell the user:

  • Repository: https://github.com/USERNAME/REPO_NAME
  • Live URL: https://USERNAME.github.io/REPO_NAME/
  • Note: Pages takes 1-2 minutes to go live.

Error Handling

  • Repo already exists: Suggest appending a number (my-slides-2) or a date (my-slides-2026).
  • Pages enablement fails: Still return the repo URL. User can enable Pages manually in repo Settings.
  • PPTX conversion fails: Tell user to run pip install python-pptx.
  • PDF conversion fails: Suggest installing poppler-utils (apt install poppler-utils or brew install poppler).
  • Google Slides download fails: The presentation may not be publicly accessible. Ask user to make it viewable or download the PPTX manually.
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