YouTube Thumbnail Previewer
See how your thumbnail looks before publishing
Survive 30 Days Trapped In The Sky, Win $250,000
MrBeast95M views • 2 months ago
There Is Something Faster Than Light
Veritasium28M views • 1 year ago
The Strange Math That Predicts (Almost) Anything
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Dream5.7M views • 3 weeks ago
Your Video Title Goes Here
Your Channel0 views • Just now
iSHOWSPEED'S FORTNITE ICON SKIN REVEAL!
IShowSpeed12M views • 1 week agoWhy Preview Your YouTube Thumbnails?
Test Visual Impact
See how your thumbnail stands out against competitors. A thumbnail that looks great in your editor might blend in on YouTube.
Mobile Preview
Over 70% of YouTube views come from mobile. Make sure your thumbnail looks great on smaller screens.
Boost Click-Through Rate
Thumbnails can increase CTR by up to 154%. Preview before publishing to maximize your video's potential.
Search Visibility
Check how your thumbnail appears in search results. Thumbnails display differently across YouTube's various pages.
Frequently Asked Questions
What is the ideal YouTube thumbnail size?
The recommended YouTube thumbnail size is 1280×720 pixels with a 16:9 aspect ratio. The minimum width is 640 pixels, and the file size should be under 2MB. Supported formats include JPG, GIF, and PNG.
How does this thumbnail previewer work?
Upload your thumbnail image and instantly see how it will appear across different YouTube layouts: home feed, search results, recommended sidebar, and mobile app. Your thumbnail is displayed alongside real YouTube videos for accurate comparison.
Is this YouTube thumbnail previewer free?
Yes, this YouTube thumbnail previewer is completely free to use. There are no limits on how many thumbnails you can test. Your images are processed locally in your browser and are never uploaded to any server.
Why do thumbnails look different on mobile?
Mobile thumbnails appear much smaller than desktop versions. Small text and fine details may become unreadable. Use this previewer to ensure your thumbnail's key elements remain visible and impactful on mobile devices.