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Pptx Pdf Font Fix

Fix PowerPoint font embedding issues in PDF export by patching text transparency in PPTX files.

Rating
4.5 (207 reviews)
Downloads
596 downloads
Version
1.0.0

Overview

Fix PowerPoint font embedding issues in PDF export by patching text transparency in PPTX files.

Complete Documentation

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PPT Font Fix

Problem

PowerPoint's "Export to PDF" can fail to embed downloaded/custom fonts, substituting built-in defaults, even when:

  • Fonts are properly installed and embeddable
  • "Embed fonts in the file" is checked in PowerPoint options

Workaround

Applying a tiny transparency (1%) to text with 0% transparency forces PowerPoint to correctly embed fonts in PDF output. This is visually imperceptible but changes how PowerPoint processes the font during export.

Usage

bash
python3 scripts/fix_font_transparency.py input.pptx [output.pptx] [--transparency 1]

Options

  • output -- Output PPTX path (default: input_fixed.pptx)
  • --transparency, -t -- Transparency % to apply (default: 1)

Behavior

  • Only patches text runs that are fully opaque (0% transparency)
  • Leaves text that already has any transparency untouched
  • Safe to run multiple times
  • Only modifies slide XML (ppt/slides/slideN.xml), not layouts/masters

Workflow

  • Receive PPTX file from user
  • Run the fix script: python3 scripts/fix_font_transparency.py input.pptx
  • Return the patched PPTX to the user
  • User opens patched file in PowerPoint and exports to PDF -- fonts now embed correctly

Note

PDF export must be done from PowerPoint desktop. Server-side converters (LibreOffice, Graph API) do not reproduce the same font embedding behavior.

Installation

Terminal bash

openclaw install pptx-pdf-font-fix
    
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Tags

#web_and-frontend-development

Quick Info

Category Development
Model Claude 3.5
Complexity One-Click
Author chernojagne
Last Updated 3/10/2026
🚀
Optimized for
Claude 3.5
🧠

Ready to Install?

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openclaw install pptx-pdf-font-fix