ComfyUI Extension: noEmbryo nodes
Run ComfyUI workflows without the setup
No installs, no CUDA version roulette, no GPU sitting idle on your bill. Bring a workflow and run it in the browser.
PromptTermList (1-6): are some nodes that help with the creation of Prompts inside ComfyUI. Resolution Scale outputs image dimensions using a scale factor. Regex Text Chopper outputs the chopped parts of a text using RegEx.
Looking for a different extension?
Custom Nodes (10)
README
noEmbryo Nodes
A diverse set of nodes for ComfyUI.
You can access them through "Add node > noEmbryo" submenu.
Json Prompt Loader

A node that can load a .json file with item:prompt pairs and outputs the selected item's prompt, while combining it with a custom prompt.
It can load .json files from any directory, not just the node's directory.
For the custom text integration, there is a variable (can be specified by the user), that can be used in the item's prompt text to insert the custom text anywhere in the body of the prompt.
- UI controls
- json_path is the path to the
.jsonfile.
It can be an absolute path of your hard drive, or a relative path to the ComfyUI's installation directory. - selected_item selects one of the
.jsonfile's items (prompts). - variable is the variable that will be used to insert the custom text into the item's prompt text.
- custom_text is the custom text that will be inserted into the item's prompt text.
- json_path is the path to the
- Advanced Usage
- Adding new items
To add a new item, we have to write it in thecustom_textinput, using the following format:item=The prompt's title/keyword value=The prompt's text, including our variable - Updating items
To update an item, we use the same method, just write the specific item we want to update.item=An existing title/keyword value=The new prompt's text, including our variable - Deleting items
To delete an item, we use the same format, but we just leave thevalueempty.item=An existing title/keyword value=
.jsonfile, and the node will output a message about the success or failure of the operation.
We can also load an empty.jsonfile and use this method to populate it. - Adding new items
<u>After changing the .json file, we must reload the ComfyUI page, so the node can reload the updated file.</u>
Resolution Scale
A simple node that outputs the resolution of an image using the dimensions of an input image or some custom user-defined dimensions, using a Scale Factor.
If there is an input image connected, setting either width or height to 0 will use the other dimension to scale the image (but always multiple of 4).
Regex Text Chopper
A node that "chops" a text using a regular expression and outputs the chopped parts of the text.
Auto Save Workflow

This node can save the current workflow to a .json file, every time a generation job is run.
- UI controls
- save_directory is the directory where the
.jsonfile will be saved.
It can be a relative path inside the ComfyUI's output directory, or an absolute path of your hard drive. - filename is the name of the
.jsonfile.
It can contain the{timestamp}placeholder, which will be replaced with the current timestamp (for unique filenames). - trigger switch will enable (or not) the saving of the workflow.
- save_directory is the directory where the
- Outputs
- status outputs a text with the status of the saving process (the path of the saved file, or an error message).
- ✳️trigger is a dummy output that's used to trigger the saving process, even if nothing is connected to the node.
PromptTermList 1-6
<u>The PromptTermList nodes are now obsolete, and can mostly be replaced by the Json Prompt Loader node.
I won't remove them for compatibility reasons, but I would recommend using the JsonPromptLoader node instead.</u>
These are some nodes that help with the creation of Prompts inside ComfyUI.
Usage
Every one of these 6 nodes have a different json file that stores its Prompt Terms in "label"/"value" pairs.
The "label" part is what we see at the node's dropdown menu, and the "value" part is what it produces at its Term output when we run a generation job.
These json files are located inside the TermLists directory, in the node's folder.
There are two ways to add a new term.
-
From within ComfyUI:
- Connect a text box to the node's
textinput. - Write the "label"/"value" part in the box using the following format:
label=Descriptive text value=masterpiece, artful and cozy- Enable the
store_inputswitch. - Run a generation job.
- Refresh the page.
- Connect a text box to the node's
-
Manually:
- Just open the
jsonfile and add/remove/change entries.
Ofcourse we must be very careful with this, to keep the
jsonformat of labels/values (with the appropriate commas), otherwise the file will not be parsed. - Just open the
This text input is also useful if we want to manually add something after our term, or as the only term if we select the None label of the dropdown.
The strength value is changing the impact of the term by using the parenthesis format like this: (a great term:1.3)
We can delete a term by sending an empty value to the text input like this:
label=The label to be deleted
value=
Installation
- Use the ComfyUI Manager
- Or manually
- cd to
ComfyUI\custom_nodes - git clone https://github.com/noembryo/ComfyUI-noEmbryo.git
- Restart ComfyUI
- cd to
Run ComfyUI workflows without the setup
No installs, no CUDA version roulette, no GPU sitting idle on your bill. Bring a workflow and run it in the browser.