Check Null is a ComfyUI node in the utils category from comfyui-daz-tools. Inputs: value. Outputs: BOOLEAN. Run it in the cloud, no install required.

A collection of ComfyUI utility nodes. The Workflow Config nodes (WAN2.2 and LTX2.3) let you store multiple named presets — models, LoRA stacks, prompts, dimensions, and sampling parameters — and switch between them from a single dropdown, making it easy to test variations, manage scene setups, and iterate across versions without rebuilding your workflow or creating and maintaining multiple copies of it. Additional nodes: Lora Inspector (scans and displays safetensors metadata for any LoRA in your library), Check Null (detects null, None, NaN, or empty values), Null Audio Checker (detects silent/missing audio tracks from video inputs), and Abs Int (absolute value for integers).

Check Null

Inputs (1)

Outputs (1)