Thumbfa.st
AI thumbnail generator that keeps a creator's face consistent across designs, copies styles from URLs, and turns sketches into finished art.
What it does
Thumbfa.st generates YouTube thumbnails from text prompts, reference images, or hand-drawn sketches while preserving a saved 'face' profile so the creator looks the same across every thumbnail. It can also copy the style of an existing thumbnail from a pasted YouTube URL.
Core features
Saved person/face profile reused across generations
Style extraction from any pasted YouTube URL
Sketch-to-thumbnail editor for rough layouts
Up to 4 variations generated per run
Reusable templates for consistent series
Podcast guest-swap template mode
Best for
→YouTubers wanting consistent branded thumbnails featuring themselves
→Podcasters swapping different guest photos into one template
→A/B testing multiple thumbnail variations before publishing
Toolspool rankingby monthly traffic