Resize and center-crop any image to the exact dimensions YouTube uses for video thumbnails and channel banners. Everything runs in your browser; nothing is uploaded.
Drop an image here or click to browse
JPEG, PNG, WebP, up to 50 MB
Schedule everything, post everywhere
Built for creators and teams
Upload your image
Drag and drop or click to select a JPEG, PNG, or WebP file up to 50 MB. Start from your highest-resolution artwork so thumbnails stay crisp at every size.
Choose a YouTube format
Select a 1280 × 720 video thumbnail or 2560 × 1440 channel art. Each preset shows the precise pixels and aspect ratio YouTube renders that placement at.
Resize and download
Click download and your image is center-cropped to the target dimensions, then saved with a descriptive filename noting the placement and size.
| Platform | Format | Dimensions | Aspect Ratio |
|---|---|---|---|
| YouTube | Video Thumbnail | 1280 × 720 px | 16:9 |
| YouTube | Channel Art | 2560 × 1440 px | 16:9 |
Video Creators
Export thumbnails at the recommended 1280 × 720 so they stay sharp from the mobile feed all the way up to a living-room TV.
Channel Branding
Size channel art to the full 2560 × 1440 canvas while keeping your logo and tagline within the area that shows on every device.
Agencies & Editors
Turn a client’s artwork into perfectly sized thumbnails and banners in seconds, with no design suite needed for routine resizing.
Channel Launches
Prepare thumbnails and banner art ahead of a launch so your channel looks complete and on-brand the moment it goes live.
Start from your highest-res original
Thumbnails are scrutinized at small sizes but also stretch onto large screens. Scaling a big source down keeps detail; scaling a small one up loses it.
Respect the channel art safe zone
Channel art is 2560 × 1440, but only a center band shows on phones and TVs. Run it through the YouTube Safe Zone tool to keep your text and logo visible everywhere.
Center your subject before uploading
This tool center-crops outward from the middle. Position the focal point of your thumbnail in the center of the original so it stays framed after the crop.
Keep thumbnail text large and central
Most views happen on small screens. Bold, centered text near the middle of a 1280 × 720 thumbnail reads clearly even when the image is tiny.
PNG for graphics, JPEG for photos
The tool keeps your input format. Use PNG for thumbnails built from text and shapes; use JPEG for photo-heavy artwork to keep the file under YouTube’s limit.
Compress 2560 × 1440 banners
Channel art at full size can be a large file and slow to upload. Run it through the Image Compressor after resizing to shrink it with no visible quality loss.
Next step
Sized for YouTube? Check the safe zone
Channel art crops differently on every screen. Confirm your banner with the YouTube safe zone checker, see how content creators run their channels, then trim file size with the image compressor.
Your Privacy Matters
We don't store, log, or share any URLs or downloaded content. Your activity stays between you and the source platform.
Secure by Design
All requests are processed server-side over HTTPS. No client-side data collection or third-party trackers.
Legal Responsibility
Only download content you have rights to. Respect platform terms of service and copyright law.
This tool is intended for personal use and downloading content you own or have permission to download. Always respect the original creator's rights.
Everything you need to know about using this tool.
Plan and schedule your social content across all 9 platforms from one calendar, with AI to tailor every post.
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Liam O'Brien
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“The brand voice feature is scary good. My audience said my posts felt more consistent than ever, they had no idea AI was involved.”
Priya Nair
Founder, Inkwell Studio
“Switched from Buffer and never looked back. The AI adaptations alone are worth the price.”
Carlos Vega
Growth Marketer, Launchpad Agency
“We grew our Instagram following by 40% in two months. The platform-specific tone makes a real difference.”
Mia Thornton
E-commerce Brand Manager, Glow & Go
“As a one-person team, I needed something that could scale with me. Postprism is exactly that tool.”
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Startup Founder, Loopify
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