Nano Banana

This is a full-featured presentation generator that uses Gemini's image generation API to create slides as high-quality images, then packages them into PPTX files. The workflow is thorough: you have a planning conversation with the user about structure and audience, write a slides_plan.json with actual content, pick a visual style (there are three: lineal color for technical talks, gradient glass for product pitches, vector illustration for educational content), generate all slides in batch, launch a local review server so users can see what came out, then iteratively edit specific slides based on feedback. The author clearly learned this the hard way because the docs spend serious time warning you not to skip the planning phase and not to put meta-labels like "Visual:" in your content field or they'll render as actual text on the slide. Supports multiple Gemini models depending on whether you need speed or quality.

skills.sh installs: 288
GitHub stars: 488
last updated: Aug 21, 2026

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Install

$ npx -y skills add evoscientist/evoskills --skill nano-banana --agent claude-code

Installs into .claude/skills of the current project.

Files

Nano Banana

Generate high-quality presentation slides as images using Gemini's image generation API, review them interactively in a browser, and iteratively edit based on feedback.

When to Use This Skill

User asks to create a presentation, slide deck, or PPT
User wants to generate visual slides for a talk or lecture
User has a document or outline and wants slides based on it
User says "make me a PPT", "generate slides", "create a presentation"
User wants to edit or refine existing generated slides
User needs high-quality figures, diagrams, or illustrations for papers or documents
User asks to generate research figures, architecture diagrams, or concept illustrations

Do NOT use for:

Writing academic papers → use paper-writing
Planning academic conference talk narrative structure → use academic-slides

Before You Start: Prerequisites

Before proceeding with any slide generation, verify these prerequisites. Script and style paths in this document are relative to this skill's directory.

SKILL.md on GitHub