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thumbnail-creator

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Generate article or newsletter thumbnail candidates using the Gemini API from inside Claude Code. Claude reads article copy, proposes composition concepts, writes image generation prompts incorporating brand specs, calls Gemini to generate the images, evaluates the results via computer vision, and returns ranked candidates with rationale. Use when asked to create thumbnails, generate cover images, or produce visual candidates for an article or newsletter.

plugins/pm-writers/skills/thumbnail-creator/SKILL.md

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Nov 9, 2026
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MIT

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# Thumbnail Creator Skill (via Gemini)

Generates article and newsletter thumbnail candidates by acting as an image-generation agent inside Claude Code. Instead of switching between tools and prompting Gemini's web UI one image at a time, this skill makes Claude do the full loop: read the copy, propose compositions, write tailored prompts, call the Gemini API, evaluate the outputs, and return ranked results with brief rationale.

The output is production-ready thumbnail candidates you can drop directly into your CMS, newsletter tool, or social scheduler.

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## Prerequisites

Both of these must be in place before the skill can generate images:

### 1. Gemini API Key
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