Sebu Ai Auto Thumbnail
AI-powered YouTube thumbnail generator & CTR scorer
Sebu Ai Auto Thumbnail launched on June 16, 2026 with 2 votes.
What it does
Most YouTube creators guess what makes a thumbnail work. Sebu AI scores your thumbnails with AI-powered chain-of-thought reasoning across 8+ CTR factors — contrast, faces, text clarity, emotion, and more — then generates optimized alternatives and title suggestions in seconds. Stop guessing. Start clicking.
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Thumbnail X2025 · thumbnailx.com · ▲47Hey HN! Software engineer here. As an amateur youtuber, I've been struggling with thumbnails, especially since I don't have any design or editing skills. Decided to give it a try and make my own automatic thumbnail generator. Me being an ADHD person, made sure that there's no parameter tuning and shape choosing and fuss like that, just simply give prompt and generate thumbnail. Increased my CTR from 1.2% to 2.3% (faceless fantasy books niche on youtube) Thumbnail X (completely free for now) - https://thumbnailx.com/ Just wanna add that this is by no means a perfect thumbnail…
ThumbnailCreator - AI YouTube ThumbnailsMay 2026 · thumbnailcreator.com · ▲11Paste your Video URL & Instantly get AI YouTube Thumbnails
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