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YouTube Thumbnail Builder
YouTube Thumbnail Builder
Design click-worthy YouTube thumbnails with background gradients, custom text overlays, outlines, and live YouTube placement mockups.
100% Offline
Business
Starting Presets
1. Background Layer
2. Subject Cutout Overlay
3. Text Headline
Canvas Preview (1280 x 720)
YouTube Search Feed Simulator
Ensure your design details stand out against standard light/dark modes on mobile feeds before uploading:
Dark Mode Mockup
OFFLINE-FIRST WEB APPS
KuberAgent Studio • 1.2K views • 2 hours ago
Light Mode Mockup
OFFLINE-FIRST WEB APPS
KuberAgent Studio • 1.2K views • 2 hours ago
Frequently Asked Questions
Quick direct-answer guides about using this utility tool locally and securely.
Does the YouTube Thumbnail Builder save my uploaded pictures?
No. All graphic rendering, text outlines, overlays, and background gradients are processed entirely client-side using browser canvas APIs. Your photos never leave your device.
What size are the exported thumbnails?
The thumbnails are exported at the standard YouTube resolution of 1280x720 pixels in high-quality PNG or JPEG format, ready for direct upload.