Empty Latent Image Presets (EmptyLatentImagePresets) - ComfyUI-KJNodes

The Empty Latent Image Presets node technically extracts width and height values by parsing the user-selected preset string and calls ComfyUI's built-in EmptyLatentImage function to generate a latent noise tensor of the specified dimensions and batch size.

Empty Latent Image Presets is a preset node for generating empty latent images. It allows users to quickly select from a set of predefined image dimensions and aspect ratios, simplifying the creation of the initial latent space in a workflow. This node serves as a convenient starting point for initiating the image generation process.

Node Functionality

Technically, this node extracts width and height values by parsing the user-selected preset string and calls ComfyUI's built-in EmptyLatentImage function to generate a latent noise tensor of the specified dimensions and batch size. It supports various common image resolutions (512x512, 768x512, 960x512, 1024x512, 1024x576, 1536x640, 1344x768, 1216x832, 1152x896, 1024x1024) and provides an option to swap the aspect ratio to accommodate different generation needs.

Node Parameter Description - Empty Latent Image Presets

Control Parameters (Parameters)

Parameter Name	Data Type	Required	Default Value	Value Range/Options	Description
`dimensions`	COMBO	Yes	512 x 512 (1:1)	512 x 512 (1:1), 768 x 512 (1.5:1), 960 x 512 (1.875:1), 1024 x 512 (2:1), 1024 x 576 (1.778:1), 1536 x 640 (2.4:1), 1344 x 768 (1.75:1), 1216 x 832 (1.46:1), 1152 x 896 (1.286:1), 1024 x 1024 (1:1)	: Select the preset image dimensions and aspect ratio. Options: 512x512 (1:1), 768x512 (1.5:1), 960x512 (1.875:1), 1024x512 (2:1), 1024x576 (1.778:1), 1536x640 (2.4:1), 1344x768 (1.75:1), 1216x832 (1.46:1), 1152x896 (1.286:1), 1024x1024 (1:1).
`invert`	BOOLEAN	Yes	False	-	: Boolean value. When True, swaps the width and height values of the selected preset.
`batch_size`	INT	Yes	1	1 - 4096	: Sets the number of latent image batches to generate, with a valid range from 1 to 4096.

Output

Parameter Name	Data Type	Description
Latent	LATENT	: The output empty latent noise tensor, used for subsequent image generation.
Width	INT	: The pixel width value corresponding to the selected preset.
Height	INT	: The pixel height value corresponding to the selected preset.

Usage Scenarios

This node is very useful when building an image generation workflow that requires a fixed output size. For example, when creating social media banners or artwork with specific aspect ratios, you can directly select a preset like "1024 x 576 (1.778:1)" without needing to manually connect two separate numerical nodes to set the width and height, thereby improving workflow construction efficiency.

Notes

Please note that this node generates an empty latent image (i.e., random noise). It needs to be connected to a sampler node like KSampler and combined with prompts to generate the final image. The output dimension information can be used by subsequent nodes that require knowledge of the image resolution (such as ControlNet preprocessors or image save nodes).

Empty Latent Image Presets Node Source Code Link

The Empty Latent Image Presets node is from the ComfyUI-KJNodes node package.

Empty Latent Image Presets(EmptyLatentImagePresets)