pptx

A set of instructions for working with PowerPoint presentation files ending in .pptx. It covers reading, inspecting, editing, and creating slide decks.

In plain words
What is it for?
Creating pitch decks or presentations, extracting slide text, reviewing slide images, and modifying existing PowerPoint files.
Why use it?
It gives the coding agent a defined process for handling presentation files, including checking slide layouts and working from templates.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/tale-project/tale/pptx
Any agent
npx skills add tale-project/tale --skill pptx
Clone the repo
git clone --depth 1 https://github.com/tale-project/tale

Made for: Claude Code, Codex.

Per session 152 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,546 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 83% 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.

ModelPer sessionOnce invoked
Fable 5 $0.00152 $0.02546
Opus 5 $0.00076 $0.01273
Sonnet 5 $0.00030 $0.00509
Haiku 4.5 $0.00015 $0.00255

Measured 2d ago against content hash a56f3bf99c77, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d ago.

The scan reads SKILL.md. This mod also ships 17 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

83% identical to pptx — 101 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.

configs/platform/custom/skills/pptx/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PPTX Skill

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.

  1. Analyze template with thumbnail.py
  2. 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

  • Respect the configured corporate identity first: If a "Corporate Identity (Presentation Branding)" section is present in your context, it defines the org's accent color and logo. Use those as the DEFAULT theme — they REPLACE the sample palettes below — and place the logo as directed there. Only depart from them when the user explicitly asks for a different style.
  • Pick a bold, content-informed color palette (when no corporate identity is configured, or the user opts out of it): 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 · 239 lines

Files

What ships with it

59 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.

  1. 2d ago First seen · 239 lines · 152 tokens per session scan A a56f3bf99c77

Subscribe to this mod's changes

pptx is a skill published in the GitHub repository tale-project/tale (23 stars, last pushed 2d ago), licensed MIT. It adds 152 tokens to every session and 2,546 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. It is 83% identical to pptx, differing in 101 lines, and is treated as a copy.

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