Resolution

The resolution is the resolution of a digital image as expressed by its pixel count, in the Width x Height format.

Resolution determines the native size of the image from which the various Stable Diffusion iterations were trained. Below are the most common:

Stable Diffusion 1.5: 512x512 2.

Stable Diffusion 2.1: 768x768 3

Stable Diffusion XL: 1024x1024

Resolution - Image Ratios

The following image ratios are commonly used in Stable Diffusion 1.5

1:1 512 × 512

2:3 512 × 768

3:4 512 × 683

4:5 512 × 640

16:9 910 × 512

The following image ratios are commonly used in Stable Diffusion XL

1:1 1024 × 1024

2:3 1024 × 1536

3:4 1024 × 1365

4:5 1024 × 1280

16:9 1820 × 1024