Preview your thumbnail before you upload
See how your thumbnail and title look next to other videos: on desktop, in search and on a phone. Your image never leaves your device.
Layouts are simplified mock-ups for previewing only.
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Why you should preview your thumbnail before uploading
A thumbnail that looks great full-screen in your editor can disappear in a busy feed. Viewers usually see it at a fraction of that size, surrounded by other videos competing for the same click. This YouTube thumbnail preview tool shows your design in four realistic places: the home feed, search results, a phone screen and the "Up next" column, in both light and dark mode.
A quick thumbnail checklist
- Readable at small size: any text should still be legible in the "Up next" and phone views. If not, use fewer, bigger words.
- One clear focal point: a face, product or object that stands out against its background.
- Bottom-right corner clear: the video length badge sits there and covers whatever is underneath.
- Works with the title: type your real title in and check they complement each other rather than repeating the same words.
Not sure your file is the right size? Run it through the thumbnail resizer first, and check your title length with the title checker.
Questions
Is my thumbnail uploaded anywhere?
No. The image is shown using your browser only. It never reaches our server.
Why are the other videos blurred blocks?
They're neutral placeholders so you can judge how your thumbnail stands out on its own. Use "Shuffle" to try different colours around it.
What should I look for?
Check that the main subject and any text are readable at the small sizes, especially "Up next" and phone. If you have to squint, simplify the design.