YouTube Thumbnail Previewer Tool

Free YouTube Thumbnail Previewer

This free YouTube Thumbnail Previewer tool allows creators to test how their thumbnails appear on different YouTube layouts including desktop homepage, suggested sidebar and mobile dark mode. By using this YouTube thumbnail tester, you can improve thumbnail visibility, avoid text being hidden by timestamps, and increase click-through rate.

Why Use a YouTube Thumbnail Tester?

Many YouTube thumbnails look good in full resolution but perform poorly on mobile and sidebar views. This YouTube thumbnail preview tool helps you test thumbnails before upload and optimize CTR using safe area overlay and timestamp preview.

Features

• Free YouTube thumbnail previewer
• Desktop, sidebar and mobile preview
• CTR safe area overlay
• Timestamp overlay testing
• No signup required
• Fast and lightweight

FAQ

Is this tool free? Yes, 100% free.

Does it show mobile preview? Yes, mobile dark mode included.

Does this help CTR? Yes, testing thumbnails improves click-through rate.