Free Tool

Thumbnail Preview Tool

Design your YouTube thumbnail with text overlays, preview it at realistic sizes (desktop, sidebar, mobile feed), then export at 1280x720. Everything runs locally in your browser.

Example Output
I QUIT MY JOB here's what happened next
YouTube sidebar (320px)
I QUIT MY JOB here's what happened next
Mobile feed (168px)
I QUIT MY JOB here's what happened next

Example: Thumbnail preview at standard YouTube sizes. Upload your own thumbnail to see your personalised preview.

YouTube sidebar (320px)
Mobile feed (168px)
Variant A (current)
Variant B
Settings
Background
#1a1a2e
0
0%
Text overlay
72
#ffffff
Outline
4
Shadow
6
Layout
40
Safe area guides
A/B comparison
Export
85%

How to Use

Step 1
Set a background
Upload your own image, pick a solid colour, or click "Load demo" for a sample gradient. Use the blur and dim sliders to make your text pop.
Step 2
Add text
Type your main headline and optional subtext. Adjust font size, weight, colour, outline, and shadow. Pick a position from the 9-point grid and set padding.
Step 3
Preview and export
See your thumbnail at full size, YouTube sidebar scale, and mobile feed scale. Toggle safe area guides to check nothing gets clipped. Export as PNG or JPG at exactly 1280x720.

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