YouTube Thumbnail Resizer
Resize any image to the perfect YouTube thumbnail format instantly. Get the exact 1280x720px dimensions for maximum click-through rate — free.
Click to upload or drag & drop
JPG, PNG or WEBP (Max 10MB)
Upload and resize an image to see the optimized preview here.
System Ready
Images resized with Bolta are automatically optimized for web performance, ensuring fast load times and sharp display on all devices.
Use YouTube Thumbnail Resizer in 3 Easy Steps
Upload Your Image
Upload the photo you want to use as a YouTube thumbnail.
Resize to 1280x720
We resize your image to YouTube's recommended thumbnail resolution instantly.
Download & Upload
Download and upload your thumbnail directly in YouTube Studio.
Why choose Bolta YouTube Thumbnail Resizer?
YouTube Recommended Size
1280x720px (16:9) is YouTube's recommended thumbnail resolution — sharp on all devices from mobile to 4K TV.
Thumbnail CTR Matters
A well-sized, high-quality thumbnail is one of the biggest factors in click-through rate. Get the dimensions right every time.
Instant & Free
No watermarks, no sign-up, no uploads to external servers. Resize entirely in your browser for free.
How Bolta is Different from Other Generators
Other tools stop at generation. Bolta is built for systems and scale.
| Feature | Other Tools | Bolta (System) |
|---|---|---|
| Output Type | One-off outputs | Reusable content assets |
| Workflow | Manual repetition | Automated content loops |
| Focus | Idea-focused | System-focused |
| Continuity | Output ends here | Output feeds a system |
Repurpose YouTube Content Everywhere
Bolta turns your YouTube videos into posts, captions, and threads for every social channel automatically.
Reuse It Intentionally
Adapt your core content for multiple formats, angles, and platforms instantly.
Automate Future Schedules
Build a consistent posting plan that stays active even when you're busy.
Turn It Into a Loop
Put your content on autopilot with automated variations and recurring schedules.
Frequently asked questions
What is the ideal YouTube thumbnail size?
What file format should YouTube thumbnails be?
What resolution is best for YouTube thumbnails?
Is this free?
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Stop downloading one piece at a time. Bolta's AI agents repurpose content into platform-native posts and publish them on autopilot.