Updated for 2025

YouTube Thumbnail Size Guide

The official YouTube thumbnail size is 1280×720 pixels with a 16:9 aspect ratio.

Learn the exact thumbnail dimensions, resolution requirements, file formats, and design tips for creating high-CTR thumbnails that get clicks.

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Quick Answer

1280×720
Pixels (Width × Height)
16:9
Aspect Ratio
2 MB
Max File Size

Official YouTube Thumbnail Specifications

Recommended Size1280 × 720 pixels
Minimum Width640 pixels
Aspect Ratio16:9
Max File Size2 MB
Accepted FormatsJPG, GIF, PNG
ResolutionHD (720p) or higher

Thumbnail Display Sizes by Device

YouTube displays your thumbnail at different sizes depending on the device and context. Here's how your 1280×720 thumbnail will appear:

Device/ContextDisplay Size
Desktop Homepage360 × 202
Search Results360 × 202
Sidebar (Up Next)168 × 94
Mobile Feed320 × 180
Mobile Search120 × 68
TV App480 × 270

💡 Tip: Always design for the smallest size (120×68) to ensure your thumbnail is readable everywhere.

Visual Size Comparison

1280 × 720
16:9 Aspect Ratio (HD)
Recommended Upload Size
120×68
Mobile Search
168×94
Sidebar
360×202
Desktop Home

6 Tips for High-CTR Thumbnails

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Use High Contrast Colors

YouTube's interface is predominantly white and red. Use colors that stand out, especially in dark mode feeds.

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Make Text Large & Readable

70% of YouTube views are on mobile. Use bold fonts with at least 30% of frame height for main text.

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Include a Face When Possible

Thumbnails with expressive human faces get 38% more clicks on average.

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Avoid the Bottom-Right Corner

Video duration timestamps appear there. Keep important elements away from that area.

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Test at Small Sizes

Preview your thumbnail at 120×68 pixels (search result size) to ensure readability.

Maintain Brand Consistency

Use consistent colors, fonts, and styles so viewers recognize your content instantly.

Test Your Thumbnail Size & Quality

Use our free tools to preview and analyze your thumbnails before uploading to YouTube.

Create Perfect Thumbnails with AI

No design skills needed. Generate high-CTR thumbnails at the perfect 1280×720 size in seconds.

Try Thumbify AI Free →

Frequently Asked Questions

What is the best size for YouTube thumbnails?

The recommended size is 1280×720 pixels with a 16:9 aspect ratio. This ensures your thumbnail looks great on all devices from mobile to desktop and TV.

What are the exact YouTube thumbnail dimensions?

YouTube thumbnail dimensions are 1280 pixels wide by 720 pixels tall (1280×720). This matches the 16:9 aspect ratio used by HD video.

What file format should I use for thumbnails?

YouTube accepts JPG, GIF, and PNG formats. We recommend PNG for graphics with text (better quality), and JPG for photos (smaller file size). Keep file size under 2MB.

Why is my YouTube thumbnail blurry?

Thumbnails appear blurry when uploaded at low resolution. Always use at least 1280×720 pixels. Also check your image export settings - avoid excessive compression.

What is the minimum YouTube thumbnail size?

The minimum width is 640 pixels. However, always use 1280×720 for best quality on high-resolution devices like 4K monitors and retina displays.

How do I change my YouTube thumbnail size?

Use image editing software to resize your thumbnail to 1280×720 pixels. Most tools (Photoshop, Canva, GIMP) have preset options for this size. You can also use AI tools like Thumbify to generate correctly-sized thumbnails automatically.

Does thumbnail size affect YouTube SEO?

Yes! High-quality thumbnails at the correct size lead to higher click-through rates (CTR), which signals to YouTube that your content is engaging, potentially boosting your video's ranking.

Can I use a custom thumbnail on YouTube?

Yes! You need to verify your YouTube account first. Once verified, you can upload custom thumbnails for any video during or after the upload process.

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Example thumbnails shown are for demonstration purposes only. All trademarks and original content belong to their respective owners.