New insight: Optimized Image Aspect Ratios
Google Ads
Using both 1x1 (square) and 1.91x1 (landscape) aspect ratio images is a best practice. This ensures your ads are eligible to show on a wider variety of placements, maximizing your reach and visibility. Providing both options gives the system more flexibility to serve the most visually appealing ad for different formats and devices, leading to improved user engagement.