This resizer automatically scales and crops your images to exactly 820×312 pixels. This ultra-wide aspect ratio is the standard banner format used for Facebook cover photos on desktop profiles, business pages, and event headers.
Cover cropping
When you drop an image into the tool, it uses a Cover (W×H) algorithm. The image is scaled proportionally until it fills the 820×312 canvas, and any excess height or width is cropped away. This ensures your banner is never stretched or squashed, generating a clean header that perfectly fits the desktop container.
Designing for mobile safe areas
While 820x312 is the desktop dimension, Facebook behaves differently on mobile devices, where it often crops the left and right edges of your cover photo to fit a narrower screen. To ensure your banner looks professional on both devices, keep your most important elements—like text, logos, or primary subjects—centered. Avoid putting crucial information near the extreme edges.
Local processing
All processing is handled directly in your browser. Your images are never uploaded to an external server, meaning you can safely prepare cover photos for unannounced campaigns, private events, or personal profiles without privacy concerns.