Paste a YouTube URL to preview its thumbnail in different contexts
Why Preview Your Thumbnail?
A thumbnail that looks great at full size can look terrible at the 120-pixel width used in YouTube's mobile suggestions. Our preview tool shows you how your thumbnail will appear across three key display sizes so you can make adjustments before publishing — not after.
Common Issues This Tool Reveals
- Text too small: Visible at full size but completely illegible at sidebar sizes
- Face too far back: Person becomes unrecognizable when thumbnail shrinks
- Too many elements: Complex compositions look cluttered at small sizes
- Low contrast: Colors that seemed fine on a bright monitor disappear on mobile screens