YouTube Thumbnail Preview Tool

The YouTube Thumbnail Preview Tool shows how your custom thumbnail will appear in search results, suggested videos, and different device displays before uploading.

Preview contexts:

• Search results preview
• Suggested videos sidebar
• Mobile device display
• Desktop large preview
• Thumbnail specifications check

Thumbnails drive 90% of video clicks. Preview ensures text is readable, images are clear, and designs are effective across all platforms. YouTube recommends 1280x720 resolution with 16:9 aspect ratio.