How StreamSpark Works
Three simple steps to get AI-powered insights that help your thumbnails perform better on YouTube.
Upload Your Thumbnail
Drag and drop your YouTube thumbnail image. Add your video title, select your platform (Video or Livestream), and indicate if it's gaming content for a more targeted analysis.
AI Analyzes Everything
Our AI evaluates your thumbnail across 8 critical criteria including mobile readability, scroll-stopping power, curiosity gap, and more. It also generates optimized YouTube titles, descriptions, and social posts.
Apply & Dominate
Review your YouTube Readiness Score, follow the upgrade roadmap, copy the generated titles and descriptions, share your social posts, and watch your click-through rate soar.
The 8 Criteria We Score
Each thumbnail is evaluated on these critical factors that YouTube\'s algorithm cares about most.
Originality
Freshness vs. niche norms
Character Recognition
Face clarity & emotion at small sizes
Mobile Readability
Legibility at 120×67 pixels
Premise Clarity
Instant comprehension in < 1 second
Scroll-Stopping Power
Bold colors & dramatic composition
Visual Hierarchy
Clear focal point & eye-flow
Curiosity Gap
Tease without full reveal
Game Authenticity
Match to game visual identity
What You Get
Full Thumbnail Audit
- • YouTube Readiness Score (0–100)
- • 8-criterion scorecard
- • What's Working / Holding You Back
- • Prioritized Upgrade Roadmap
- • Algorithm Insight
YouTube Content
- • 5 optimized title options
- • Strategy tags per title
- • Full formatted description
- • 8 relevant hashtags
Social Media Posts
- • X/Twitter post (280 chars)
- • Instagram caption + hashtags
- • TikTok caption with hook
- • One-click copy for all