This skill enables generation of high-performing thumbnails and cover images optimized for click-through rate (CTR). Thumbnails are designed to spark curiosity, complement titles, and compel viewers to click.
Thumbnail is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/thumbnail/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when asked to create a thumbnail, design a cover image, generate a YouTube thumbnail, or when the user mentions "thumbnail", "cover image", "CTR", or needs a visual asset for video or course content.
The Thumbnail Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 70,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/thumbnail curl -L https://claudskills.com/skills/thumbnail/SKILL.md \ -o ~/.claude/skills/thumbnail/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/thumbnail/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/thumbnail/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\thumbnail\SKILL.md on Windows. See the full install guide for step-by-step instructions.
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{thumbnail-2026,
author = {kenneth-liao},
title = {Thumbnail [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/thumbnail/}
}Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:
Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel
SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.