Stop Losing Views to Hidden Elements
Your perfect thumbnail in Photoshop might be ruined on YouTube. Preview exactly how it looks across all devices—before you publish.
Upload Your Thumbnail
Drag & drop your thumbnail here, or click to browse.
Recommended: 1280×720px (16:9 ratio)
The Anxiety Every Creator Knows
You hit publish, then realize your thumbnail looks completely different on YouTube than it did in your editor.
Hidden Text
Your carefully crafted title gets buried under the timestamp.
Cropped Faces
On mobile, the edges of your thumbnail get cut off—goodbye, expression!
Poor Contrast
Your thumbnail blends into YouTube's background and gets scrolled past.
Publish with Confidence
Our simulator shows you exactly what viewers will see—before your video goes live.
Multi-Device Preview
See exactly how your thumbnail appears on iOS, Android, Desktop, and Smart TVs.
Safe Zone Detection
Instantly identify danger zones where YouTube overlays timestamps and buttons.
Light & Dark Mode
Test contrast on both white and black backgrounds for maximum visibility.
Pixel-Perfect Accuracy
Our overlays match YouTube's exact UI specifications across all platforms.
How It Works
Upload
Drop your thumbnail image into the simulator.
Preview
Switch between devices and light/dark modes.
Check
Hit "Check Safe Zones" to see danger areas in red.
Ready to Optimize Your Thumbnails?
Use our free Safe Zone Simulator above to check your thumbnail right now. No signup required.