Simple Text to Image workflow with ControlNet tiled upscale
This is my main workflow for SDXL/Pony/Illustrious that uses ControlNet tile upscaling.
Feel free to DM me if you have any questions about the workflow.
Features
Two types of tiled upscaling: Ultimate SD and ControlNet with a one-click switch.
Save upscaled images with Civitai-compatible metadata as PNG and/or JPG. Workflow is also saved within your PNGs.
Face and Hand detailer with optional custom prompts.
(optional) CFG Skimming - here's my earlier article about this feature. CFG Skimming is turned off by default.
Simple built-in color correction via overlay for pre-upscale ESRGAN models like Remacri that tend to reduce contrast and saturation. Set it to 0 if you're using other ESRGAN such as 4x-UltraSharp and colors in the upscaled image look too saturated.
For low VRAM try reducing tile size in the upscaler to 512.
Getting Started
Requires manual installation of Save Images With Metadata Universal Extension from GitHub.
Download ControlNet model from HuggingFace and put it into ComfyUI > models > controlnet. (~2.4GB dowload). Assign this model in the upscaler after ESRGAN model here:
General use (works for all kind of styles): Promax model
Realistic images: TTplanet realistic mode
Install/Update custom ComfyUI nodes using ComfyUI Manager.
When running workflow for the first time, remove Bypass on a Metadata Rule Scanner. Bypass it after.
Version History
v2.0 update
Updated and tested with ComfyUI 0.43.0
Added a switch for simple mode upscaler (similar to A1111 and Forge)
Added hand detailer subgraph
Better node organization
v1.2 update
Added CFG Skimming, after more testing I think it's an interesting tool. Can be easily disabled in generation settings options (enable_skimming). Change CFG to recommended checkpoint values when you disable it.
Saved images should now be compatible with Civitai. I was getting tired of filling some fields manually. Requires manual installation of Save Images With Metadata Universal Extension
Combined generation settings into a single subgraph
For MetaData saver to work properly, run Rules Scanner Subgraph once after installation or when you change nodes in ComfyUI (I don't make the rules)
By default set tile_batch_size to 1 in HiRes subgraph to safely run on <12GB VRAM. If you have more than 12GB, set it to 2 (can be even higher with 24GB, but I won't recommend it).
Removed redundant switch for Adetailer.
v1.1 update
Replaced Lora Loaders to non-Clip ones
Replaced KSampler to default ComfyUI node
Cleaned up wiring
Promoted additonal options in HiRes subgraph for easier access
Initial upscale model selector (i.e. Remacri/UltraSharp/ESRGAN)
ControlNet tile checkpoint selector
tile batch size (higher values increase speed at the cost of VRAM)
blend factor (color correction)
Also added some options in the face detailer subgraph
Moved nodes closer together and grouped them for easier bypass