Guides

Guides to better YouTube thumbnails

Practical, no-fluff guides on designing, testing and improving thumbnails — based on how YouTube actually works.

The exact dimensions, file size and format YouTube needs — plus Shorts and safe areas.

A step-by-step process from hook to upload — with or without design skills.

12 practical rules for thumbnails that earn clicks without clickbait.

How to run thumbnail tests that teach you something — with YouTube’s Test & compare.

What counts as a good impressions click-through rate — and how thumbnails move it.

How to write 2–5 words that add curiosity instead of clutter.

When to put a face in your thumbnail, which expressions work and how to stay consistent.

How Shorts covers work, the right size, and how to design a clean Shorts grid.

Make your next thumbnail in minutes

Tell the AI agent what your video is about — it proposes a thumbnail, you approve it, and you can tweak it by asking.