Twitter Summary Card Resizer
Summary cards display a small square thumbnail next to your link. X requires at least 144×144 pixels; we generate 400×400 so it stays sharp on retina screens. Get the exact size.
400
width (px)
400
height (px)
1:1
aspect ratio
Need other dimensions? Browse all Twitter sizes or use the free image resizer for any platform.
Why 400×400 Pixels?
Summary cards use a small square format with a 1:1 aspect ratio. X's documented minimum is 144×144 pixels—below that, the card image can fail to display. 400×400 clears that minimum with room to spare, so your thumbnail looks sharp on modern high-DPI screens too. Keep your image simple—logos or icons work better than detailed photos at this size.
Small Image, Big Impact
Summary cards are subtle, but they add credibility to shared links. A sharp thumbnail signals that your content is worth clicking. A pixelated square makes your link look spammy.
Get the Right Thumbnail
Upload your logo or icon. We resize to exactly 400×400 pixels—well above X's 144×144 minimum. Simple, bold images work best at this size. Save and use in your website's twitter:image meta tag.
How to resize image for Twitter Summary Card?
- 1
Step 1: Choose your image
From your library on your device, choose the image you would like to use for a Twitter Summary Card.
- 2
Step 2: Upload and resize your image
Upload your image and, within a few seconds, our tool will automatically resize your image to Twitter summary card dimensions.
- 3
Step 3: Save Twitter Summary Card Image
Once ready, click the Download button to save your Twitter Summary Card Image to your device.
X's documented minimum for a summary card image is 144 x 144 pixels (1:1 ratio). We generate images at 400 x 400 pixels so they stay sharp on retina displays, well clear of that minimum.
All Twitter Image Sizes
Choose the recommended Twitter dimensions for your content
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