This workflow makes it easy to change the background of an image.

Resources you need:

Flux.1

Kijai/flux-fp8 at main (huggingface.co)
"flux1-dev-fp8" in ComfyUI\models\unet

black-forest-labs/FLUX.1-dev at main (huggingface.co)
"ae" in \ComfyUI\models\vae

comfyanonymous/flux_text_encoders at main (huggingface.co)
"t5xxl_fp8_e4m3fn" in \ComfyUI\models\clip
"clip_l" in \ComfyUI\models\clip

For GGUF

I recommend :
24 gb Vram: Q8_0 + T5_Q8 or FP8
16 gb Vram: Q5_K_S + T5_Q5_K_M or T5_Q3_K_L
<12 gb Vram: Q4_K_S + T5_Q3_K_L

GGUF_Model
city96/FLUX.1-dev-gguf at main (huggingface.co)
"flux1-dev-Q8_0.gguf" in ComfyUI\models\unet

GGUF_clip
city96/t5-v1_1-xxl-encoder-gguf at main (huggingface.co)
"t5-v1_1-xxl-encoder-Q8_0.gguf" in \ComfyUI\models\clip

Better flux text encoder
ViT-L-14-TEXT-detail-improved-hiT-GmP-TE-only-HF.safetensors · zer0int/CLIP-GmP-ViT-L-14 at main (huggingface.co)
"ViT-L-14-GmP-ft-TE-only-HF-format.safetensors" in \ComfyUI\models\clip

Upscaler

ESRGAN/4x_NMKD-Siax_200k.pth · uwg/upscaler at main (huggingface.co)
"4x_NMKD-Siax_200k.pth" in \ComfyUI\models\upscale_models

Custom Nodes :

• ComfyUI-GGUF

• rgthree-comfy

• ComfyUI_UltimateSDUpscale

• ComfyUI-KJNodes

• ComfyUI-mxToolkit

• ComfyUI Image Saver

• ComfyUI-RMBG