Project File Path Generator

Every serious ComfyUI setup eventually hits the same wall: you're generating thousands of images and want them organized into output/ProjectName/images/..., but hand-typing paths into save nodes gets inconsistent fast - one workflow uses /, another \, and nothing matches. ProjectFilePathNode is a tiny utility that assembles a path from four parts and sanitizes the hell out of it, so every file lands in a predictable place. It's boring, and boring is exactly what you want from a path node.

How it works

You give it root, project_name, subfolder, and filename, and it joins them into one path string. The separator handling is the smart part: auto uses your OS's native separator (/ on Linux/Mac, \ on Windows), or you can force forward_slash or backslash - which matters more than it sounds when you're building paths that will be handed to tools with strong opinions about separators.

What makes it worth installing over just typing a string: it sanitizes every component. It strips .. (so no path traversal sneaks in from a prompt string), removes unsafe filename characters like < > : " | ? *, replaces spaces with underscores, and strips .txt-style extensions off the filename. So "My Project", "episode:2" becomes My_Project and episode2 - no surprise broken paths later.

The output

One STRING, the fully joined path. It doesn't create folders and it doesn't write files - it generates a path for other nodes to consume. Wire it into SaveText's file input, a save-image node, or any file-path string input in your graph. IS_CHANGED always fires, so the path refreshes on every run even if nothing changed.

Installing

It's part of the DJZ-Nodes pack from Drift Johnson (MushroomFleet):

cd ComfyUI/custom_nodes
git clone https://github.com/MushroomFleet/DJZ-Nodes
cd DJZ-Nodes
pip install -r requirements.txt

Or search "DJZ-Nodes" in ComfyUI Manager. Zero extra dependencies - pure os.path work.

Where it slots in

A common pattern: ProjectFilePathNode → SaveText, so every run appends the prompt to output/MyProject/logs/prompts.txt. Or chain a few with different subfolders to build a parallel directory structure. It pairs naturally with the pack's other file nodes (SaveText, LoadTextDirectory).

Honest caveats

It's a path builder, not a path resolver - it won't tell you if the folder exists. The root default is the literal string "output", so if you want the full ComfyUI output directory you'll typically wire in something like folder_paths.get_output_directory() from another node or type the absolute path. And remember: since spaces get replaced with underscores, don't fight it - name your projects in a filename-friendly way and let it do the rest.