Question 1

What is 2560x1440 used for?

Accepted Answer

2560×1440 is the 1440p size, used for high-resolution displays. Matching it exactly avoids the platform cropping or re-compressing your image in a way you did not choose.

Question 2

How do I resize an image to 2560x1440 without stretching it?

Accepted Answer

Crop to the right shape first, then scale. Scaling a differently-proportioned image straight to 2560×1440 distorts it; cropping to 1.78:1 first and then scaling keeps everything in proportion.

Resize to 2560 × 1440