This workflow can provide you an incredible speed and detail on low resolution pictures.

for the most condition, it can boost your photo with the human, daily objects into a very high and detail quality level.

Don't change my pre-set resolution and logic if you don't understand WHY I limited it to above 1024

for these has problem with layerstyle node for sharp and soft

see：https://github.com/chflame163/ComfyUI_LayerStyle?tab=readme-ov-file#cannot-import-name-guidedfilter-from-cv2ximgproc

you can get the free google API here(I made gemini zho as by pass for default, if you want to use,)

https://makersuite.google.com/app/apikey
go to \ComfyUI\custom_nodes\ComfyUI-Gemini\config.json to input your API

for Red Node:

大多数节点都可以通过comfyui manager下载

其他常见红色节点下载：

Easy-Use:https://github.com/yolain/ComfyUI-Easy-Use

LayerStyle: https://github.com/chflame163/ComfyUI_LayerStyle

ComfyUI-Gemini:https://github.com/ZHO-ZHO-ZHO/ComfyUI-Gemini

WAS Node: https://github.com/WASasquatch/was-node-suite-comfyui

WLSH ComfyUI Nodes:https://github.com/wallish77/wlsh_nodes

pros:

• very easy to use, and much faster than the regular ultimate sd upscale. high detail and good quality
• 1 click to get the result!
• based on 4090 only 50 sec needed for one 2K level picture from 300*300 low resolution

coms:

• t2i set to above 1024 and i2i set to 2k level, need at least 16GB VRAM to run efficiently.
• face and image content might changed little based on the tile strength.
• bad performance for buildings

you can find my tile here:

https://civitai.com/models/330313/ttplanetsdxlcontrolnettilerealisticv1

my style change workflow here:

https://civitai.com/models/351314/the-style-change-effect-same-as-magnificai-for-sdxl

my ultimate upscale workflow here:

https://civitai.com/models/333060/simplified-workflow-for-ultimate-sd-upscale

for Red Node:

大多数节点都可以通过comfyui manager下载

其他常见红色节点下载：

Easy-Use:https://github.com/yolain/ComfyUI-Easy-Use

LayerStyle: https://github.com/chflame163/ComfyUI_LayerStyle

ComfyUI-Gemini:https://github.com/ZHO-ZHO-ZHO/ComfyUI-Gemini

WAS Node: https://github.com/WASasquatch/was-node-suite-comfyui

WLSH ComfyUI Nodes:https://github.com/wallish77/wlsh_nodes

Tutorial

【烂图瞬间变清晰？超级高清放大使用教程-哔哩哔哩】 https://b23.tv/RfxlDjc

Just enjoy.