Online YouTube Thumbnail Resizer
Resize and extend your thumbnails instantly. Perfect dimensions, zero hassle.
Resize Your Way to the Perfect First Impression
Go Beyond Borders with the AI Extender
Why Resizing Your Thumbnail Actually Matters
The Ultimate YouTube Thumbnail Size Guide
How to Use the YouTube Thumbnail Resizer
Upload Your Image
Resize or Extend
Preview & Download
YouTube Thumbnail Resizer FAQs
Is YouTube thumbnail 16:9 or 4:3?
Which size is used for YouTube thumbnails?
What do most YouTubers use for thumbnails?
What makes a thumbnail stand out?
How do I resize a picture for a YouTube thumbnail?
Why is my thumbnail not fitting on YouTube?