How do I install the PPTX PDF Font Fix skill?

Run npx skillmds@latest add modbender/pptx-pdf-font-fix in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is PPTX PDF Font Fix safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: executes scripts. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with PPTX PDF Font Fix?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is PPTX PDF Font Fix free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published PPTX PDF Font Fix?

modbender (@modbender) published this skill. Their other Agent Skills are listed on their SkillMD profile.

PPTX PDF Font Fix by modbender — Agent Skill

Name: PPTX PDF Font Fix
Rating: 4.2 (5 reviews)
Author: modbender

PPTX PDF Font Fix

Fix PowerPoint font embedding issues in PDF export by patching text transparency in PPTX files. Use when a user has a PPTX file where exported PDFs show wrong/default fonts instead of the intended downloaded/custom fonts, even with font embedding enabled. Works by applying minimal (1%) transparency to fully-opaque text runs, which forces PowerPoint to properly embed fonts during PDF export.

modbender Updated Sep 9, 2026 12 repo stars

File contents

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

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.

Frequently asked questions