AIでYouTubeサムネイルコンセプトを生成。クリックされるサムネイルのテキストと構図アイデアを取得。
Our AI YouTube Thumbnail Generator creates detailed thumbnail concepts tailored to your video. Instead of generating images, it gives you actionable design briefs — text overlay copy, composition layouts, color palettes, and visual elements — so you can create thumbnails that maximize click-through rate. Choose from Bold & Dramatic, Clean & Minimal, Bright & Fun, or Dark & Mysterious styles to match your brand.
No — this tool generates detailed thumbnail concepts and design briefs. You get text overlay copy, composition layouts, color schemes, and visual element suggestions that you can use in any design tool like Canva, Photoshop, or Figma.
Great thumbnails have high contrast, readable text (3-6 words max), a clear focal point, emotional expression or curiosity triggers, and consistent branding. Our generator optimizes for all of these.
Bold & Dramatic uses high contrast and intense visuals. Clean & Minimal focuses on simplicity and whitespace. Bright & Fun uses vibrant colors and playful elements. Dark & Mysterious creates intrigue with darker tones.
You get 5 distinct thumbnail concepts per generation. Each one takes a different creative approach so you have meaningful variety to choose from.
Yes! Click Generate again to get 5 fresh concepts. Each generation produces unique results.
YouTube recommends 1280x720 pixels with a 16:9 aspect ratio and minimum width of 640 pixels. Our composition descriptions are designed with this format in mind.
Yes. The YouTube Thumbnail Generator is completely free with no signup required. Generate as many concepts as you need.