A guide and set of methods for working with PowerPoint presentation files (.pptx). It covers reading slide content, creating presentations, editing them, and converting them for visual checking.

Use it to extract slide text, make thumbnail previews, create or edit slide decks, and convert presentations to PDF or images for review.

It gives a consistent way to handle presentation files and inspect both their text and appearance. It also identifies the software needed for common presentation tasks.

pptx — Skill for Claude Code and Codex by hyqibot/token-free-openclaw

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/hyqibot/token-free-openclaw

agentmods

npx agentmods add skills/hyqibot/token-free-openclaw/pptx

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/hyqibot/token-free-openclaw/pptx/github.svg)](https://agentmods.dev/skills/hyqibot/token-free-openclaw/pptx)

Your own site

<a href="https://agentmods.dev/skills/hyqibot/token-free-openclaw/pptx"><img src="https://agentmods.dev/badge/skills/hyqibot/token-free-openclaw/pptx/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/hyqibot/token-free-openclaw/pptx"><img src="https://agentmods.dev/badge/skills/hyqibot/token-free-openclaw/pptx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 152 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,481 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00152	$0.02481
Opus 5.5	$0.00061	$0.00992
Sonnet 5.5	$0.00030	$0.00496
Haiku 4.5	$0.00015	$0.00248

Measured 1mo ago against content hash 561a063ae877, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pptx scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

The scan reads SKILL.md. This mod also ships 7 executable files (scripts/__init__.py, scripts/add_slide.py, scripts/clean.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to pptx — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

copaw/agents/skills/pptx/SKILL.md · 240 lines

How it starts

The opening of the file, as written. The whole thing — 240 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Important: All scripts/ paths are relative to this skill directory. Run with: cd {this_skill_dir} && python scripts/... Or use the cwd parameter of execute_shell_command.

PPTX Skill

Prerequisites

markitdown[pptx]: text extraction from presentations
Pillow: thumbnail grid generation
pptxgenjs (npm install -g pptxgenjs): creating presentations from scratch
LibreOffice (soffice): presentation-to-PDF conversion
pdftoppm (poppler-utils): PDF-to-image conversion for thumbnail/visual workflows
If pdftoppm is unavailable, a Python fallback path may use pdf2image.
On Windows, dependencies must be installed and available in PATH; if missing, report the dependency issue and stop (do not keep retrying).

Quick Reference

Task	Guide
Read/analyze content	`python -m markitdown presentation.pptx`
Edit or create from template	Read editing.md
Create from scratch	Read pptxgenjs.md

Reading Content

# Text extraction
python -m markitdown presentation.pptx

# Visual overview
python scripts/thumbnail.py presentation.pptx

# Raw XML
python scripts/office/unpack.py presentation.pptx unpacked/

Editing Workflow

Read editing.md for full details.

Analyze template with thumbnail.py
Unpack → manipulate slides → edit content → clean → pack

Creating from Scratch

Read pptxgenjs.md for full details.

Use when no template or reference presentation is available.

Design Ideas

Don't create boring slides. Plain bullets on a white background won't impress anyone. Consider ideas from this list for each slide.

Before Starting

Pick a bold, content-informed color palette: The palette should feel designed for THIS topic. If swapping your colors into a completely different presentation would still "work," you haven't made specific enough choices.
Dominance over equality: One color should dominate (60-70% visual weight), with 1-2 supporting tones and one sharp accent. Never give all colors equal weight.
Dark/light contrast: Dark backgrounds for title + conclusion slides, light for content ("sandwich" structure). Or commit to dark throughout for a premium feel.
Commit to a visual motif: Pick ONE distinctive element and repeat it — rounded image frames, icons in colored circles, thick single-side borders. Carry it across every slide.

Read the full file on GitHub · 240 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 240 lines · 152 tokens per session scan A 561a063ae877

Subscribe to this mod's changes

pptx is a skill published in the GitHub repository hyqibot/token-free-openclaw (134 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 152 tokens to every session and 2,481 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to pptx, differing in 0 lines, and is treated as a copy.

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