Thumbnail Brief Writer
YouTube/Shorts/Reels thumbnail briefs with three A/B concepts and CTR reasoning.
How it works
Describe your task
Platform-specific aspect ratio + conventions
Thumbnail Brief Writer does the work
Three A/B concept variants per brief
Get your deliverable
On-screen text (6 word ceiling)
See it in action
"Thumbnail brief for a YouTube video on Claude vs GPT-4"
Platform-specific aspect ratio + conventions
Based on analysis of 15+ data sources, the market shows strong growth signals with a 34% YoY increase in demand. Key competitors include three well-funded players, but significant gaps exist in the mid-market segment.
Three A/B concept variants per brief
Three primary opportunities identified: (1) underserved SMB segment with $2.4B TAM, (2) emerging regulatory tailwinds in Q3 2026, (3) declining satisfaction with incumbent solutions per G2 reviews.
On-screen text (6 word ceiling)
Recommended approach: focus on the compliance automation niche where incumbent NPS scores average 23/100. First-mover advantage window estimated at 8-12 months.
Accessibility contrast enforcement
Based on analysis of 15+ data sources, the market shows strong growth signals with a 34% YoY increase in demand. Key competitors include three well-funded players, but significant gaps exist in the mid-market segment.
CTR prediction reasoning
Three primary opportunities identified: (1) underserved SMB segment with $2.4B TAM, (2) emerging regulatory tailwinds in Q3 2026, (3) declining satisfaction with incumbent solutions per G2 reviews.
Preview of a typical Thumbnail Brief Writer output — your results will be fully detailed and ready to use.
Example prompts
Capabilities
- Platform-specific aspect ratio + conventions
- Three A/B concept variants per brief
- On-screen text (6 word ceiling)
- Accessibility contrast enforcement
- CTR prediction reasoning
When to use
- →Creator optimizing an existing video
- →YouTube ops team standardizing thumbnail quality
- →Marketer producing platform-ready video assets
Frequently asked questions
How does Thumbnail Brief Writer work?
Describe your task in plain English and Thumbnail Brief Writer handles the rest. It platform-specific aspect ratio + conventions, then three a/b concept variants per brief, and delivers a polished result you can use immediately.
What do I get as output?
You receive a complete, ready-to-use deliverable. The output includes platform-specific aspect ratio + conventions, three a/b concept variants per brief, on-screen text (6 word ceiling). Every output is quality-checked before delivery.
How long does it take?
Most runs complete in ~~45 seconds. Complex requests with deeper analysis may take slightly longer. You can close the tab and come back — your result will be waiting.
What plan do I need?
Thumbnail Brief Writer is included with the Starter plan. No credit card required to try your first run.
Your first run is free. No credit card required.