Ino String Toggle Case

Sometimes you just need everything uppercased or lowercased - a filename convention, a tag list, a prompt you want to normalize before it hits the encoder. Ino String Toggle Case is the node for exactly that: one toggle for upper/lower, one toggle to turn the whole thing off. It's the simplest node in the pack's string family, and it's fine being simple.

It ships in ComfyUI Ino Nodes (nobandegani/ComfyUI-InoNodes).

The inputs

• enabled - the master toggle, on by default. Flip it off and the node passes your string through untouched.
• input_string - the text to convert. Multiline, so a whole prompt block works.
• toggle_to - the direction. On means Upper, off means Lower (the dropdown labels make this obvious: Upper / Lower).

One output, string, the converted text. Under the hood it's plain Python .upper() / .lower(), so it handles the whole string at once, including non-ASCII letters.

Where it fits

Honestly, this is a utility you'll reach for in two situations: standardizing text for comparisons downstream (case-sensitive checks elsewhere in the pack behave better when everything arrives in one case), and cosmetic normalization of filenames or display strings. It's also a decent teaching node - if you're wiring up toggles for the first time, this shows how the pack's enabled-gated nodes behave: disabled means passthrough, not failure, which is the pattern across the rest of the pack.

There's a real sibling-distinction moment here: if your strings need to be trimmed of whitespace, that's Ino String Trim; if you need case-insensitive comparison, that's a contains/equals node's job, not this one. Toggle Case just flips the case. That's the whole deal.

Install

# ComfyUI Manager: search "ComfyUI Ino Nodes", install, restart
# or manually:
cd ComfyUI/custom_nodes
git clone https://github.com/nobandegani/ComfyUI-InoNodes.git
cd ComfyUI-InoNodes
pip install -r requirements.txt

Restart ComfyUI after. Nothing heavy: no models, and requirements.txt installs the pack's shared dependency inopyutils. The pack needs a current ComfyUI (V3 schema, v0.18.1+), and the README's cd comfyui_ino_nodes is a typo - the folder is ComfyUI-InoNodes.

The one behavior to remember: with enabled off, the output is the original string, not an empty one. That's intentional and it's the same convention every enabled-toggle node in this pack follows - good to know before you build a workflow that depends on it.