thumbnail-design SKILL.md skillA
thumbnail-design from social-media-skills/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add social-media-skills/skills/thumbnail-design@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- social-media-skills/skills
- Path
skills/thumbnail-design/SKILL.md- Versions recorded
- 3
- Latest version
- v1.0.0, committed Jul 18, 2026
- First version recorded
- Jul 8, 2026
- Size
- 6,654 bytes
- Repository stars
- 251
- License
- MIT
Design YouTube video thumbnails that earn the click — mobile-legible, one focal point, honest. Use when someone wants to design a YouTube thumbnail, improve CTR, brief a thumbnail, choose thumbnail text, or plan thumbnail A/B testing. Designs and briefs high-CTR thumbnails and writes the A/B test plan: a thumbnail is a promise, not a poster, designed as a unit with the title and legible on mobile. Uses the CLICK framework. Reads brand-profile + the video/title first. A HUMAN or an image/design…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# thumbnail-design A **design-craft skill** — write the promise, design the concept + text, produce the **brief**, and plan the **A/B test**. The agent **designs + briefs + plans**; a **human or image tool makes the raster**; the **YouTube thumbnail is uploaded + tested natively** (no WoopSocial field). ## The POV: a promise, not a poster — designed as a unit with the title A thumbnail drives **~70–80% of click decisions**, and the viewer decides in **under a second** — so its job is the **click that leads to a watch.** Two rules anchor everything: the **thumbnail + title are one unit** (the thumbnail **shows**, the title **tells** — they never repeat), and it's a **promise, not a poster.** That second rule is enforced by the platform: YouTube's native A/B test picks the winner by **watch-time share, not raw CTR**, so a misleading high-click thumbnail **loses** to an honest one. Design for **mobile first** — most viewing is on a phone, where simplicity and contrast win. ## Read these first 1. **brand-profile** — channel style/template (for consistency). 2. the **video and its title** (often from **youtube-publishing-and-metadata**/**youtube-long-form**/ **youtube-shorts**). …
Read the whole file at its exact version.
How to install
mdr add social-media-skills/skills/thumbnail-design@sha256:1a9a4bf79eb4ba9cThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_zyq5unec4aomewvs)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jul 8, 2026 and Jul 18, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-07-18 | 5222f27 | 6,654 B | A | view · diff |
| v1.0.0 | 2026-07-16 | 2e54555 | 6,893 B | A | view · diff |
| v1.0.0 | 2026-07-08 | 28a59a8 | 6,771 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6654 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
social-media-skills/skills · 251 stars · license MIT · pushed 2026-10-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zyq5unec4aomewvs GET https://markdownregistry.com/api/v1/resolve?ref=social-media-skills/skills/thumbnail-design GET https://markdownregistry.com/api/v1/blob/1a9a4bf79eb4ba9c178659cd8309f4a38a9ff7cea13e1c64b3b214a418e4a262
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.