Inspect HD Thumbnails & Test CTR Against Dark/Light Feeds
Preview your YouTube video thumbnail across YouTube Homepage, Mobile Feed, Search Results, and Dark/Light mode before publishing.
How To Build High-Income YouTube Channels in 2026
Creator Pro Academy • 142K views • 2 days ago
How to Use YouTube Thumbnail Preview & HD Viewer
Simple 3-step workflow designed for fast creator analytics without complex setups.
Upload Image or Enter Video URL
Upload your draft thumbnail or paste an existing YouTube video link.
Preview Multi-Device Feed
See how your thumbnail looks in YouTube mobile feed, desktop sidebar, and search grids.
Check Readability & Timestamp Badge
Ensure text is not covered by YouTube bottom-right timestamp badge.
Key Capabilities & Features
- ✓Simulates YouTube mobile and desktop UI with 16:9 aspect ratio
- ✓Timestamp badge overlay simulator (prevents critical text cutoff)
- ✓Inspects full resolution MaxRes (1280x720) and HQ thumbnail images
- ✓Dark mode and Light mode comparison toggle
Policy Compliance & Transparency
- For published videos, max resolution depends on the original resolution uploaded by the creator.
- Operates within official YouTube API Services Guidelines and Google Search quality guidelines.
Everything You Need to Know
What is the optimal size for a YouTube thumbnail?▼
The ideal resolution is 1280x720 pixels (16:9 aspect ratio) with a minimum width of 640 pixels, formatted as JPG, PNG, or WebP under 2MB.
Where should I avoid placing text in a YouTube thumbnail?▼
Avoid the bottom-right corner where YouTube places the video duration timestamp badge (e.g. 10:24), which blocks underlying text and graphics.
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