Guides for better thumbnails
Sizes, prompts and design principles — everything we know about thumbnails that get clicked.
6 min read
YouTube Thumbnail Size, Format and Safe Zones (2026 Guide)
The right YouTube thumbnail size is 1280×720 pixels (16:9), under 2 MB, as JPG, PNG or GIF. Here is everything else you need: safe zones, file size tips, 4K, Shorts and testing.
7 min read
How to Write AI Prompts for YouTube Thumbnails That Get Clicks
A simple prompt formula for AI thumbnail generators, with examples for gaming, tech, finance, fitness and more — plus the mistakes that make AI thumbnails look generic.
6 min read
What Makes a YouTube Thumbnail Clickable: 9 Design Principles
Nine practical design principles for YouTube thumbnails: one focal point, readable text, contrast, faces and emotion, honest curiosity, consistent branding and testing.