Promo Banner Size
1200 × 400 px
Wide 3:1 promotional banner at 1200 × 400.
Crop to Promo Banner now
Drag & drop your image
or browse files · PNG, JPEG, WEBP, AVIF · up to 20 MB
Drop an image and we'll auto-crop it to 1200 × 400.
Use a high-res source
Start with an image at least 1200px wide so the result stays sharp.
Keep content in the safe area
Important text and faces should stay within the central region so nothing is cut off on smaller screens.
Export as WebP
WebP at ~90% quality is visually lossless and a fraction of the file size.
Promo Banner — frequently asked questions
What is the correct Promo Banner size?+
The recommended Promo Banner size is 1200 × 400 pixels (a 3 : 1 aspect ratio).
How do I resize an image to 1200 × 400?+
Upload your image to BannerCrop AI and choose the Promo Banner preset. Our smart crop centers the subject automatically at the exact 1200 × 400 size, then you download it — usually in under 15 seconds.
Which file format is best for a Promo Banner?+
WebP gives the best quality-to-size ratio for most banners. Use PNG when you need transparency or crisp text, and JPEG as a universal fallback. BannerCrop AI exports all of these with a live file-size estimate.
Is BannerCrop AI free to use?+
Yes. You can crop and download banners for free, and your images are processed right in your browser — they never leave your device.