Save Mask Bridge (Non Output) (Yogurt Nodes)

Save Mask Bridge Ex (Non Output) is the mask saver for the automation crowd: the full Ex feature set - the Custom extension option - with the node's "this is a workflow output" status stripped away.

Let's decode the name once, because it applies to the whole family. "Ex" = the suffix dropdown has three choices (.png, .jpg, Custom) plus a custom_suffix string that overrides the dropdown when filled, so masks can leave ComfyUI as just about any image format Pillow supports. "Non Output" = is_output_node is false, so ComfyUI doesn't collect this node's result as a workflow deliverable. The disk write happens regardless; only the API/frontend treatment changes.

Why you'd pick this combo

The exact shape of the use case: you have an inpainting or repaint pipeline that dumps a mask artifact into a shared folder for another tool to pick up, and you don't want that dump showing up as a "result" every run. The image passes through the node - masks, width, height, batch, saved_paths all come out - the file lands silently, and the saved_paths output gives your downstream automation the definitive record of where it went. Non-output is precisely the right call when the save is bookkeeping, not a deliverable.

Inputs otherwise mirror the Ex mask saver: masks, output_dir (blank → ComfyUI output), filename_prefix with %date:yyyy-MM-dd% tokens, disable_metadata, overwrite, png_compression, jpeg_quality. Remember: non-empty custom_suffix beats the dropdown.

Install

Whole pack, one install:

cd ComfyUI/custom_nodes
git clone https://github.com/yogurt7771/ComfyUI-YogurtNodes.git
cd ComfyUI-YogurtNodes
pip install -r requirements.txt

Or ComfyUI Manager → ComfyUI-YogurtNodes → install → restart. Under Yogurt Nodes → IO.

The traps

Family rule number one: Custom selected in the dropdown with an empty custom_suffix means no extension - keep them paired. Number two: non-output means the file won't appear in the frontend gallery; that's expected behavior, check the folder or saved_paths, don't assume the save failed. Number three, mask-specific: keep the format lossless (PNG or webp) unless you have a reason not to - JPEG artifacts on a mask can push borderline pixels over your threshold on reload.