Crop Image to 21:9 Ultra-Wide

Crop to 21:9 ultra-widescreen — perfect for cinematic banners and ultrawide monitors.

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PNG, JPG, WebP, BMP — any size, mochi handles it all

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After cropping, use the Sharpen tool to enhance clarity, then Compress to optimize file size for sharing.

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Continue your workflow

Crop Image to 16:9 →Dual Monitor Wallpaper Resizer →Desktop Wallpaper Resizer 4K →
Type Dimensions Ratio
Ultrawide Monitor2560×108021:9
Ultrawide QHD3440×144021:9
Cinema 4K4096×171621:9

Frequently Asked Questions

What is 21:9 used for?
21:9 is the ultra-widescreen ratio used by ultrawide monitors, cinematic film, and website hero banners. It creates a dramatic, panoramic look.
What resolution is 21:9?
Common 21:9 resolutions include 2560×1080 (UWFHD), 3440×1440 (UWQHD), and 5120×2160 (5K ultrawide).
Can I use 21:9 for website banners?
Yes, 21:9 makes excellent hero banners that span full width with a cinematic feel. Use 2560×1080 or wider for sharp display on large screens.