AI Thumbnail Resizer — Resize Covers for Any Platform
Don't just crop — our AI thumbnail resizer redesigns your cover for each platform. Upload your thumbnail, pick a new size, get a perfectly adapted layout.
Resize My Thumbnail — FreeHow It Works
Upload Your Cover
Drop your existing thumbnail or cover image. Our thumbnail resizer handles any format and aspect ratio.
Pick Target Platform
Choose YouTube, TikTok, Pinterest, or custom dimensions. The AI thumbnail resizer analyzes your image for smart repositioning.
Get Resized Cover
AI repositions elements for the new aspect ratio. Download a professionally adapted cover.
Use Cases
YouTube → TikTok
Convert your horizontal YouTube thumbnail to vertical TikTok format without losing key elements.
Cross-Platform Publishing
One cover concept, resized for YouTube, Pinterest, and xiaohongshu in seconds.
Old Thumbnails
Update your old thumbnails to modern platform requirements with AI re-layout.
Features
AI Smart Resize
Not just cropping — AI extracts elements and repositions them for the new aspect ratio.
Batch Resize
Generate multiple sizes at once. One upload, covers for every platform.
All Platforms
YouTube 16:9, TikTok 9:16, Pinterest 2:3, xiaohongshu 3:4, and custom sizes.
Mobile Preview
See how your resized cover looks on mobile before downloading.
FAQ
How is this different from normal cropping?
Normal cropping cuts off parts of your image. AI resize analyzes the content and repositions elements to fit the new aspect ratio while preserving the design intent.
What formats can I upload?
We support PNG, JPG, and WebP. Maximum file size is 10MB.
Can I resize for multiple platforms at once?
Yes. Upload once and generate resized covers for YouTube, TikTok, Pinterest, and xiaohongshu simultaneously.
Is the resized cover high quality?
Yes. AI generates a new image at the target resolution, not a stretched or compressed version of the original.
How many resizes can I do for free?
Free tier includes 5 lifetime credits. Each resize uses 1 credit per target size.