To make a custom thumbnail for YouTube, you can use editing tools available on your PC or Mac computer.

How to Pick a Certain Thumbnail for a YouTube Video. YouTube automatically selects a frame from each uploaded video for use as the video's thumbnail image.

In this video, I show you how to use the new YouTube A/B Thumbnail Testing tool. This tool, which is now available to everyone, allows you to test different thumbnails to see which one performs ...

How to to disable Taskbar Thumbnail Preview in Windows 7 using the Registry Warning: Improperly modifying the Windows Registry can cause Windows to not operate correctly.