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YouTube Thumbnail Preview Tool (Feed & Mobile Simulator)
Simulate your thumbnail and title appearance across YouTube desktop, mobile, search, and suggested feeds.
Thumbnail Diagnostics
Dimensions
1280 Ã 720
Aspect Ratio
16:9 (Optimal)
đĄ UI Badge Check:
Verify that your key text, branding, and faces are NOT positioned in the bottom-right corner where YouTube overlays the video duration timestamp.
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How to Use This Tool
1. Upload your thumbnail image (JPG/PNG/WebP) or provide an image URL.
2. Enter your video title and channel name.
3. Switch between preview tabs: Desktop Home Feed, Mobile Feed, Search Results, and Suggested Sidebar.
4. Check readability at small dimensions and verify the timestamp badge overlay area.
2. Enter your video title and channel name.
3. Switch between preview tabs: Desktop Home Feed, Mobile Feed, Search Results, and Suggested Sidebar.
4. Check readability at small dimensions and verify the timestamp badge overlay area.
Frequently Asked Questions
Testing allows you to verify that text remains legible on mobile screens, colors contrast strongly in dark mode, and critical visual elements aren't blocked by YouTube's timestamp badge in the bottom-right corner.
Thumbnails render at different aspect sizes on mobile feeds vs suggested sidebars. Testing across views ensures critical text and visual hooks are never obscured by duration badges.
All standard resolutions up to 4K (1280x720, 1920x1080) in JPG, PNG, and WebP format.