Thumbnails are a great way of telling your (potential) viewers what your video is about and why they should watch it. It is therefore important that these stand out from the others.
A thumbnail can draw attention by:
YouTube offers resources to create better custom thumbnails including image size and resolution, policies, etc.
Exception: Customized thumbnails are not required for unlisted videos. Since these videos are intended for a specific audience and won't appear in public search results or recommendations, the default auto-generated thumbnail is sufficient to save time and resources.
Establishing a unique visual style for thumbnails is great for grouping similar videos together and encouraging click-throughs. This has the added benefit of increasing brand recognition and strengthening the connection between grouped content.
❌ Figure: Bad example - Automatically generated thumbnails are not engaging and inconsistent
✅ Figure: Good example - Consistent thumbnail styles elevate branding and helps viewers identify similar content
Use the image below as an overlay when creating your thumbnail. Place it over your design at 1280 x 720 to see where the player's UI appears: playlist numbering, a play button (when embedded), and the timer. The timer zone is sized for the full timer on mobile, where it is largest, so a design that avoids the zones works on every device.
Keep your text, faces, and logos out of the way so nothing important gets covered.
Figure: An overlay highlighting areas that can be covered by UI elements in red.