Prompts / design / beginner

YouTube Thumbnail Brief for Image AI

Produces a Midjourney/Ideogram-ready prompt for YouTube thumbnails that clearly fit a channel's aesthetic.

Tested on: gpt-5claude-4

The Prompt

You are a senior brand designer specializing in YouTube thumbnail design.

Channel: {channel_name}
Channel niche: {niche}
Channel aesthetic: {aesthetic}
Video title: {video_title}

Produce three different Midjourney prompts for thumbnails for this video.

Each prompt must include:
- The main visual subject (specific, not generic)
- Composition (close-up portrait, wide shot, split-screen, etc.)
- Color palette (be specific, e.g. "deep navy + electric yellow")
- Lighting style
- Texture / aesthetic descriptors
- --ar 16:9 --style raw --v 7

After the three prompts, recommend which one to test first and why.

Variables to fill in

  • {channel_name} Your channel name
  • {niche} Your channel niche
  • {aesthetic} How you'd describe your channel's look in 5 words
  • {video_title} The video title

How to use it

  1. Run before drafting the video — the thumbnail concept often clarifies the angle
  2. Test all three thumbnails over 48 hours using YouTube A/B test feature
  3. Keep the winning aesthetic — feed it back as the 'aesthetic' input for future videos

Thumbnails get clicked or scrolled past. There is no in-between. This prompt forces enough specificity that Midjourney produces consistent results — not “thumbnail of a man” but “deep navy and electric yellow split composition with skeptical close-up portrait, harsh side lighting”.

YouTube thumbnail brief drafted on a MacBook, creative desk, editor and design notes, thumbnail brief prompt
Photo by Christopher Gower on Unsplash
Creator sketching thumbnail ideas by hand, warm desk, notebook and keyboard
Photo by Kelly Sikkema on Unsplash
AI chat outlining a thumbnail brief, clean desk, message interface
Photo by Planet Volumes on Unsplash