Automated cover scaling
This tool locks the target dimensions to exactly 2560×1080 pixels (an ultrawide ~21:9 aspect ratio) and forces “cover” mode. It scales your uploaded images proportionally until both dimensions meet or exceed the target, then crops the excess from the center. This guarantees a perfectly sized ultrawide frame without any stretching or letterboxing, ideal for cinematic website banners and ultrawide monitor wallpapers.
Local batch processing
The entire resizing pipeline runs directly in your browser using a background Web Worker pool. You can drop hundreds of images into the queue at once to prepare wallpaper packs or background collections. The tool will process them in parallel without uploading anything to a remote server, keeping your original files private.
Output format and downloads
Processed files retain their original format (JPG, PNG, or WebP). The tool appends the 2560×1080 dimensions to the original filename (e.g., wallpaper-2560x1080.jpg). You can download the resized images individually from the list or package the entire batch into a single ZIP archive.