Thumbnail Machine — Development skill for Claude Code
Turn any article into ready-to-run thumbnail prompts — 5 formats, 10 styles, your face in every image.
How to install Thumbnail Machine
This entry records only its repository, not the path inside it, so there is no
exact command to give. Open holy-templar/thumbnail-machine and copy the folder into
~/.claude/skills/, or the file into ~/.claude/agents/.
What Thumbnail Machine does
Turn any article into ready-to-run thumbnail prompts — 5 formats, 10 styles, your face in every image. Free Claude skill.
Alternatives in Development
- Book To Skill — Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work 25.9k ★
- Last30days Skill — Claude Code skill that researches any topic across Reddit + X from the last 30 days, then writes copy-paste-re 4.4k ★
- n8n MCP Tools Expert — MCP tools guide with tool selection and node formats 3.6k ★
README
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/ Y \/ __ \_> < | | | | /\___ \| ( <_> ) | \
\____|__ (____ /__/\_ \ |__| |____//____ >__|\____/|___| /
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Thumbnail Machine
A [Claude](https://claude.com) skill that turns any article, script, or topic into ready-to-run thumbnail and cover-image prompts — with your own face kept consistent across every image.
Throw your content at the agent. It reads it, asks you three rounds of questions (format + style + title → reference images → visual details), then writes an image prompt engineered for your exact format — and either generates the images for you or hands you the prompts to run anywhere.
Formats
| Ratio | Built for |
|---|---|
| 16:9 | YouTube thumbnails, blog heroes |
| 9:16 | Reels / Shorts / TikTok covers, Stories |
| 1:1 | Instagram feed, podcast art |
| 5:2 | X (Twitter) Article cover headers |
| 3:4 | Portrait covers — Pinterest and vertical-feed platforms |
Every format has its own composition logic and safe zones (YouTube's duration badge corner, vertical platforms' UI bands, X's banner crop) — a prompt written for 16:9 is recomposed for 9:16, not just re-cropped. Pick several formats in one run and each gets its own adapted prompt.
Examples
All six generated with this skill — same face reference across every image, five formats, four styles.
YouTube 16:9 — Dark Gradient |
YouTube 16:9 — Poster Collage |
Instagram 1:1 — Dark Gradient (narrative) |
*Portrait 3:4 |
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Designs three deliberately different thumbnail concepts per video — Safe, Curiosity and Wildcard — each shippi
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Use this agent when drafting kie.ai Nano Banana 2 image prompts for the scenes of a short video. It turns a sc
YouTube 16:9 — Dark Gradient
YouTube 16:9 — Poster Collage
Instagram 1:1 — Dark Gradient (narrative)
*Portrait 3:4