Demo workflow of my all in one Aspect Ratio node with Presets, Custom Ratio, Custom Dimensions, and Processing.

• Presets: Choose among the most used aspect ratios or double click any of the 3 below if you miss any. Use it with min or max side, or megapixels. Snap dimensions to closest multiple value or not.

• Custom Ratio: Any ratio with the same parameters. Here you can also use the ratio of the input image.

• Custom dims: Any dimensions including the input values. Snap works here too (rythm is a dancer?).

• Processing: Choose if you want image scaling or not and which algorithm to use. VAE Encode can be switched on if you both have an image and VAE input. If not the latent output is empty

More info in my Github repository: https://github.com/Dehypnotic/ComfyUI-Dehypnotic