See your thumbnail and title in the YouTube home feed, search, sidebar, and on mobile — light and dark mode. Free and private.
Upload a thumbnail and title to see how they look in the home feed, search, sidebar, and on mobile — before you publish.
55/100
I Tried Every Budget Gaming Laptop So You Don’t Have To
Your Channel
1.2K views • 2 hours ago
Another video competing for the click
Other channel
24K views • 1 week ago
Another video competing for the click
Other channel
24K views • 1 week ago
Another video competing for the click
Other channel
24K views • 1 week ago
Another video competing for the click
Other channel
24K views • 1 week ago
Another video competing for the click
Other channel
24K views • 1 week ago
I Tried Every Budget Gaming Laptop So You Don’t Have To
1.2K views • 2 hours ago
Your Channel
Another video competing for the click
24K views • 1 week ago
Other channel
Another video competing for the click
24K views • 1 week ago
Other channel
I Tried Every Budget Gaming Laptop So You Don’t Have To
Your Channel
1.2K views • 2 hours ago
Another video competing for the click
Other channel
24K views • 1 week ago
Another video competing for the click
Other channel
24K views • 1 week ago
Another video competing for the click
Other channel
24K views • 1 week ago
Mobile feed
I Tried Every Budget Gaming Laptop So You Don’t Have To
Your Channel · 1.2K views • 2 hours ago
Another video competing for the click
Other channel · 24K views • 1 week ago
Smallest size (up-next on phones and TVs)
If you can’t read the text or recognize the subject at this size, simplify: fewer words, bigger faces, stronger contrast.
A YouTube thumbnail preview tool shows how your thumbnail and title will look to viewers before you upload. Drop in your image, type your title, and see realistic previews of the home feed, search results, suggested sidebar, mobile feed, and the tiny up-next size — in light and dark mode. Add real competitor videos to see whether yours stands out next to them.
Your thumbnail and title decide whether someone clicks, and they look very different in a crowded feed than they do in your editor. This YouTube thumbnail preview tool shows your design in realistic YouTube layouts — next to real competitor videos if you like — so you can fix problems before publishing.
Upload your image, type the exact title, and check every layout: the large home-feed card, the search row, the small suggested-video thumbnail, and the mobile feed. Then check the smallest size — if the text or face is unreadable at 120 pixels wide, simplify.
Toggle dark mode and move your video between positions. A thumbnail that pops on white can disappear on dark backgrounds.
YouTube recommends 1280×720 pixels (16:9) with a minimum width of 640 pixels, under 2 MB, in JPG, PNG, or GIF format. The tester checks the ratio, resolution, and file size as soon as you upload.
Paste links to the videos you compete with in search or suggested. Their real thumbnails and titles load beside yours, so you can see whether your colors, faces, and text actually stand out. Need references? Download top thumbnails with our thumbnail downloader.
Preview thumbnails in home, search, sidebar, and mobile layouts
Light and dark mode — many viewers browse YouTube in dark mode
Compare side by side with real competitor videos
Checks 16:9 ratio, 1280×720 resolution, and the 2 MB upload limit
Private: your image never leaves your browser
Upload or drag in your thumbnail image
Type your title, channel name, and video length
Optionally paste competitor video links to load their real thumbnails
Switch light/dark mode and move your video around the feed
Check the smallest size to make sure text is still readable
Need inspiration? Grab top-performing thumbnails in your niche with the YouTube thumbnail downloader.
Test 2–3 versions here, then use YouTube’s built-in thumbnail A/B test
If it looks busy at 120px wide, it is too busy
Titles over ~70 characters often get cut off on phones
Bright faces and simple backgrounds survive dark mode best
Start using YouTube Thumbnail Preview Tool today and see the difference it makes in your video performance.
Try YouTube Thumbnail Preview Tool Now - Free