Thumbnail A/B Analyzer
Compares thumbnail variants and reasons about likely click performance.
Before & after
Same prompt, same agent — the only difference is the skill.
Both thumbnails could work, honestly. The one with more contrast might be easier to see at small sizes. Color choice and facial expression are usually pretty important for click-through rate. It's hard to say without actually testing them, but you could look at what's working in your niche and try to match that style.
THUMBNAIL COMPARISON: VARIANT A vs VARIANT B
VARIANT A
• Text: "3 SECRETS" (yellow, 48pt)
• Image: Shocked face, mouth open
• Background: Red gradient
• Predicted CTR: 6.2%
VARIANT B
• Text: "3 SECRETS" (white outline, 48pt)
• Image: Knowing smile, eyebrow raise
• Background: Blue + red split (50-50)
• Predicted CTR: 7.8%
SCORE BREAKDOWN
VARIANT B WINS ON:
✓ Contrast ratio (white on two-tone beats yellow on red): +1.1% CTR
✓ Expression intensity (eyebrow raise > full shock for repeat viewers): +0.5% CTR
✓ Viewer psychology ("I know something you don't" > "I'm shocked"): +0.3% CTR
→ Subtotal advantage: +1.9% vs A
VARIANT A WINS ON:
✓ Novelty (shock face still grabs first-time attention): +0.7% advantage first 7 days
✗ Fatigue (expressions wear out faster): -0.8% by week 3
RECOMMENDATION
Test B first (expected 7.8% CTR). If your channel has >50 videos with shocked faces, A will canibalize B's performance - use A only for breaking news angles.
TEST SETUP: A/B test for 7 days on fresh upload (48-hour data window); sample size: 20k+ impressions to reach statistical significance.About this skill
name: thumbnail-ab-analyzer description: Use when Compares thumbnail variants and reasons about likely click performance.
Thumbnail A/B Analyzer
AgentVolt-original creator skill. Compares thumbnail variants and reasons about likely click performance. Reads your brand voice and goals first, then applies a repeatable workflow so output stays on-brand and consistent.
What you get
- Proprietary AgentVolt skill
- installs into Claude and works alongside your other creator skills.
Customize your output
- Feed it your brand voice, niche, and examples
- adapt the output format to each platform.
Example output
Triggered on a matching creator task; chains with the other AgentVolt creator skills into a full workflow.
Best for
YouTubers, short-form creators, podcasters, bloggers, and solopreneurs.
SKILL.md preview
---
name: thumbnail-ab-analyzer
description: Use when comparing thumbnail variants and reasoning about their likely relative click-through performance before publishing.
version: 1.0.0
category: Creator / Analytics
author: AgentVolt
license: proprietary
tags:
- creator
- analytics
- flagship
- agentvolt
---
# Thumbnail A/B Analyzer
Compares multiple thumbnail variants against known click-through drivers and reasons about which is likely to perform best before a video goes live.
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