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Free Toolbox
Thumbnail CTR Checker
Grade contrast, focus and click potential.
Go deeper
Run a real video through the full ViralHookAnalyzer.
Paste any YouTube, TikTok or Shorts link and get benchmarks, retention curves, and rewrites — grounded in your actual footage.
Analyze a video freeExamples
Best practices
- Use ≤4 words of text and make them readable at 120px wide.
- One clear focal point beats a cluttered composition every time.
- Face + exaggerated expression outperforms neutral shots.
- Test title/thumbnail congruence — mismatched pairs kill retention even if CTR is high.
Frequently asked questions
Can I paste a link?+
Yes — a YouTube maxresdefault URL, an image URL, or a written description all work.
What CTR is considered good?+
On YouTube, 4-6% is average; 8-12% is strong; 15%+ is viral territory. Thumbnail-title congruence usually matters more than absolute artistry.
Does the tool consider dark mode?+
Yes — contrast is evaluated the way the browse feed renders (dark UI on mobile, light on desktop).
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