YouTube · Thumbnail tester

Test your thumbnail before you publish

See how your thumbnail looks in search, the sidebar, the mobile feed and the end-screen — next to real competition. Everything runs locally, no upload.

Thumbnail

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Recommended 1280x720

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Mock metadata

Title

Channel

Duration

Views

Age

Theme

01 Search result — desktop around 360x202 thumb

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A sample description showing how your content sits between other YouTube search results…

02 Sidebar — recommended videos next to a playing video

Another video sitting next to yours

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Another video sitting next to yours

03 Mobile feed full-width on phone

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⋮

04 End-screen — as a small card this is how viewers see your 'next video'

previous video

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Recommended for you

05 Scale test readable at 4 sizes

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Search XL · 320px

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Sidebar · 240px

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Mobile · 168px

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End-card · 96px