ComfyUI Series Part 1: Powerful Generative AI Tool for Local Use

October 21, 2025

Discover ComfyUI's local AI image and video generation. Learn node-based workflows, privacy benefits, and if it's right for your workflow.


Series

Is Local AI Generation Right for Your Post-Production Workflow?

When we first stumbled across ComfyUI, the promise seemed almost too good to be true: a fully-featured generative AI application rivaling online services like Midjourney and Stable Diffusion—except it runs entirely on your own machine. No cloud uploads. No subscription fees. Complete privacy for client work.

For post professionals constrained by NDAs or client confidentiality agreements, this distinction matters. You’ll discover how ComfyUI opens up AI-powered image and video generation without compromising the security protocols that govern professional production environments.

“ComfyUI is a complex tool and in many ways, it’s more difficult to use than online Gen AI services. What you get in return is an incredibly flexible and completely free AI image generator [with absolute privacy].”

Igor Riđanović, Colorist, Finisher
ComfyUI Workflow Example Running On LocalHost
ComfyUI Text-To-Image Workflow Example Running On A Private LocalHost

This first installment in our ComfyUI series provides a broad overview of the interface, capabilities, and workflow philosophies that make this tool both powerful and challenging. We’ll explore everything from basic image generation to inpainting, sketch-to-image workflows, and even LoRA fine-tuning—helping you determine whether ComfyUI deserves a place in your creative toolkit.

Security Considerations Before You Install

Before rushing to download ComfyUI, understand the security implications. The application itself isn’t malicious, but it can become a vehicle for introducing trojans through third-party custom nodes—snippets of code the community freely shares to extend functionality.

Wait for the next installment in this series, where we’ll cover proper installation procedures, including sandboxing techniques that let you explore ComfyUI safely. Alternatively, consider trying one of several cloud-based ComfyUI services to experiment with the interface before committing to local installation—though this reintroduces the privacy concerns that make local processing attractive in the first place.

Key Takeaways

  • ComfyUI runs entirely on your local machine, providing absolute privacy for client work and eliminating ongoing subscription costs after initial hardware investment.
  • Node-based workflow architecture mirrors familiar tools like Fusion and Resolve’s Color page, with intuitive visual connections and extensive template libraries.
  • Local hardware constraints mean you’re limited by your GPU’s capabilities—no borrowing cloud computing power for complex generations.
  • The platform supports diverse generation modes, including text-to-image, image-as-source, inpainting, video generation, and LoRA fine-tuning.
  • Community workflows share easily through embedded PNG metadata, though third-party custom nodes require security precautions that we’ll cover in the next episode.

Mentioned Resources

  • Comfy.org – The Official website
  • ComfyUI on GitHub – Official repository for installation and documentation
  • Civitai.com – Community hub for sharing ComfyUI workflows, models, and LoRAs

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