Upload your thumbnail and instantly see how it looks in Desktop Search, Sidebar, Mobile Feed, and Home Feed. Optimize CTR before publishing — free & instant.
Your thumbnail is displayed at many different sizes across YouTube.
Faces showing extreme emotion — surprise, excitement, concern — consistently outperform neutral expressions in CTR.
Short, thick-font text with high contrast adds context and curiosity. Must remain readable at 200px wide.
Thumbnails with a single dominant subject are processed faster. If viewers can't tell what it's about in 1 second, redesign.
Yellow, orange, red, and cyan stand out in YouTube's gray interface. Avoid colors that blend with the background.
Switch to Mobile view in this tool. If text is unreadable at 168×94px, it needs to be larger or removed.
Returning viewers should recognize your thumbnails instantly. Consistent color palette, font, and style build trust.
Click "Upload Thumbnail" or drag your image into the preview panel. Works with JPG, PNG, and other formats — nothing is sent to any server.
Use the feed tabs to see your thumbnail in Desktop Search, Sidebar, Mobile Feed, and Home Feed contexts at realistic sizes.
If text reads well and your subject is clear at small sizes, you're ready. If not, iterate in your design tool before publishing.
No single element has more impact on your video's performance than its thumbnail. YouTube's algorithm surfaces thousands of videos per search query — your thumbnail is what makes viewers click yours. An improvement of even 1–2% in click-through rate (CTR) can dramatically increase your views.
The challenge is that thumbnails look different in every placement context. A thumbnail that looks great in YouTube Studio might appear cluttered at 168×94px on mobile. This is why previewing across contexts before publishing is essential.
Human faces attract attention. Specifically, faces showing extreme emotion — surprise, excitement, concern, joy — consistently outperform neutral expression thumbnails. The emotion creates a hook that makes viewers want to find out what happened.
Thumbnails with text consistently outperform those without in most niches. Key rules: use a maximum of 3–5 words, use thick/bold fonts, and ensure the text color sharply contrasts with the background. The text needs to be readable at 200px wide.
Complete your channel review before going live.
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