AI ThumbnailDesign Collection
Check out Nano Banana Pro-generated professional thumbnails. Create the same quality in seconds.
Gallery by Category
Browse thumbnail designs optimized for different purposes
VTuber Thumbnails
Colorful designs perfect for stream announcements, karaoke, and gaming streams
Business Thumbnails
Professional designs for success stories, education, and entrepreneurship
Gaming Thumbnails
Perfect for FPS highlights, horror game reactions, and epic gameplay moments
7 thumbnail designs
副業成功ストーリー
月収100万円達成！成功体験を伝える高インパクトなゴールド系サムネイル。ラグジュアリーな雰囲気で実績をアピール。
暴露・衝撃告白系
【暴露】業界の闇を告白！赤と黒のドラマチックなデザインで視聴者の興味を引く衝撃系サムネイル。
比較・ランキング系
TOP5ランキング！比較検証で最強を決める系サムネイル。トロフィーやメダルでランキング感を演出。
ビフォーアフター変化系
3ヶ月で人生激変！劇的な変化を伝える分割スクリーンデザイン。ダークからブライトへの変化を視覚的に表現。
数字インパクト・実績系
100万円突破！大きな数字で実績をアピールするインパクト系サムネイル。ゴールドのメタリックテキストで高級感を演出。
SNS初心者・おすすめ系
おすすめジャンル20選！SNS初心者向けの明るく親しみやすいパステルカラーサムネイル。女性向けコンテンツにも最適。
対談・インタビュー系
初対談！2人の対話形式で知的なビジネス対談サムネイル。プロフェッショナルで信頼感のあるデザイン。
Found a design you like?
With Samune AI, create these designs in seconds. Try it free now.
How to Create Clickable Thumbnails
Tips to increase your YouTube click-through rate with better thumbnail design
Tips to Increase Click Rate
Eye-catching colors, readable text, and emotional expressions. Combining these elements significantly increases click-through rate.
Importance of Color
High-contrast colors improve visibility. Yellow and black, red and white combinations are particularly attention-grabbing.
Text Placement and Size
Thumbnail text should be large and readable. Make sure it's legible even on smartphone screens.
Layout Golden Rules
Use the rule of thirds, placing important elements at intersections. Layouts that guide the eye flow are effective.
Why YouTube Thumbnails Matter
On YouTube, thumbnails are the most important factor when viewers decide which video to watch. Great thumbnails significantly increase click-through rate (CTR), directly contributing to channel growth.
Recommended Thumbnail Design Patterns
- Face thumbnails - Emotional expressions connect with viewers
- Before/After - Transformation designs achieve high click rates
- Number thumbnails - Specific numbers like '5 Tips' or '3 Methods' build trust
- Text-focused - Large, readable text that clearly conveys the content
Benefits of AI Thumbnail Generation
Previously, creating professional thumbnails required Photoshop skills or outsourcing to designers. With AI thumbnail tools, you can create pro-quality thumbnails in seconds without any design knowledge.
🍌Nano Banana Pro Features
- Latest AI image generation based on Google Gemini 3 Pro Image
- Professional quality thumbnails in seconds
- 4K high resolution with full text support
- Try it free now
Frequently Asked Questions
What is the recommended thumbnail size?
YouTube recommends 1280×720 pixels (16:9 aspect ratio). Samune AI automatically generates in this size.
What makes thumbnails get more clicks?
High-contrast colors, large readable text, emotional facial expressions, and specific numbers are effective.
What are the benefits of AI thumbnails?
No design skills needed, ready in seconds, professional quality, choose from many templates, and significantly reduce costs.
Is it free to use?
Yes, you can generate 3 free thumbnails. Upgrade your plan to create more if you like the results.