String Constructor (Text-Formatting)

By lex-drlView on GitHub →

Composing prompt variants from the same text pieces with ease: • Build your "library" (dictionary) of named text chunks (sub-strings) to use it across the entire workflow. • Compile these snippets into different prompts in-place - with just one string formatting node. • Freely update the dictionary down the line - get different prompts. • Reference text chunks within each other to build dependent hierarchies of less/more detailed descriptions. • A real life-saver for regional prompting (aka area composition).

How much VRAM does String Constructor (Text-Formatting) require?

Direct Answer: The ComfyUI node String Constructor (Text-Formatting) requires a minimum base VRAM of 256MB and is optimized for GPUs with at least 4GB of VRAM. Low VRAM mode is fully supported for resource-constrained setups.

High (2-4GB)
Base VRAM:
256MB (0.3GB)
Recommended GPU:
4GB+ VRAM
Low VRAM Mode:
✓ Supported
Estimation Confidence:
HIGH

Interactive VRAM Compatibility Estimator

Estimated Total VRAM: 3.00 GBTarget: 8 GB
✅ Comfortable Fit

Your GPU has plenty of headroom. You can run this node safely with your active configurations!

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What Python packages are required for String Constructor (Text-Formatting)?

Direct Answer: Running String Constructor (Text-Formatting) requires installing the following Python package dependencies: frozendict. Ensure your ComfyUI environment has these packages active before launching.

requirements.txt
frozendict

Interactive Setup & Dependency Resolver

Operating System:
Environment Type:
Run this terminal command in your ComfyUI root folder:
# Loading command...

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Frequently Asked Questions

How much VRAM does String Constructor (Text-Formatting) require?

String Constructor (Text-Formatting) requires a minimum of 256MB (0.3GB) of VRAM for base operation. For optimal performance, a GPU with at least 4GB of VRAM is recommended. This node supports low VRAM mode for resource-constrained setups.

Can I run String Constructor (Text-Formatting) on an RTX 3060, RTX 4070, or RTX 4090?

✅ RTX 3060 (12GB): Yes, fully compatible with 10.6GB headroom. ✅ RTX 4070 (12GB): Yes, fully compatible with 10.6GB headroom. ✅ RTX 4070 Ti (16GB): Yes, fully compatible with 14.2GB headroom. ✅ RTX 4090 (24GB): Yes, fully compatible with 21.4GB headroom

What Python packages are required for String Constructor (Text-Formatting)?

To run String Constructor (Text-Formatting), you need to install: frozendict. You can install these using pip or add them to your requirements.txt file.

How can I reduce VRAM usage when running String Constructor (Text-Formatting)?

String Constructor (Text-Formatting) supports low VRAM mode. To reduce memory usage: (1) Enable --lowvram or --medvram flags in ComfyUI, (2) Reduce batch size to 1, (3) Use fp16 or fp8 precision if supported, (4) Close other GPU applications.

How do I install String Constructor (Text-Formatting) in ComfyUI?

To install String Constructor (Text-Formatting): (1) Navigate to your ComfyUI/custom_nodes directory, (2) Clone the repository: git clone https://github.com/Lex-DRL/ComfyUI-StringConstructor, (3) Install dependencies: pip install -r requirements.txt (if present), (4) Restart ComfyUI. Alternatively, use ComfyUI Manager for one-click installation.