2026 AI PowerPoint Generator for Codex: Convert Markdown to Image-Based PPTX with codex-ppt-skill

codex-ppt-skill is an open-source AI presentation tool that addresses the difficulty of native PowerPoint layout generation by rendering each slide as a full-frame image and assembling those images into a .pptx file. This image-first approach prioritizes visual consistency and faster generation over element-level editability, making it suitable for Markdown-based decks, article summaries, product explainers, research briefings, and internal concept presentations, but less appropriate when users need editable text, charts, or shapes. The workflow typically involves installing the skill, obtaining an Atlas Cloud API key, configuring Atlas Cloud as the image-model backend, preparing a concise Markdown source, and prompting an agent to create and confirm an outline, visual style, sample slide, and final deck. Atlas Cloud serves as a unified API layer for the text and image models needed to plan content and render slides, reducing the need to manage multiple providers and credentials. The guidance recommends beginning with short sources and three to five slides, generating a preview before a complete deck, and limiting retries to manage image-generation costs.

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