Shopify — clean white / neutral backgrounds, studio lighting, minimal props, high contrast subject separation.
Etsy — warm color temperature, lifestyle / craft props, natural light, textured surfaces, artisanal hand-crafted feel.
eBay — bright even lighting, plain or gradient background, sharp focus on subject, utilitarian clarity.

Companion code and training pipeline: https://github.com/s-zx/StudioDiffusion

Repository layout

Path	Contents
`shopify/final/{image_proj_model,ip_attn_processors}.pt`	Shopify checkpoint @ step 3000
`shopify/train.log`	Shopify val-loss per 250 steps
`etsy/final/{image_proj_model,ip_attn_processors}.pt`	Etsy checkpoint @ step 3000
`etsy/checkpoint-500/{image_proj_model,ip_attn_processors}.pt`	Recommended Etsy checkpoint — best val loss, before mild overfit
`etsy/train.log`	Etsy val-loss per 250 steps
`ebay/final/{image_proj_model,ip_attn_processors}.pt`	eBay checkpoint @ step 3000
`ebay/train.log`	eBay val-loss per 250 steps

Each checkpoint follows the IPAdapterSDXL.save_pretrained format defined in adapters/ip_adapter/model.py. Two files per checkpoint: image_proj_model.pt (CLIP-embed → token projection) and ip_attn_processors.pt (injected K/V weights for every cross-attention block of the SDXL UNet).

Usage

Download

python

from huggingface_hub import snapshot_download

# Full set (~5.6 GB)
snapshot_download(
    repo_id="jasonshen8848/StudioDiffusion-ip-adapter",
    local_dir="checkpoints/ip_adapter",
)

# Single platform (~1.4 GB)
snapshot_download(
    repo_id="jasonshen8848/StudioDiffusion-ip-adapter",
    local_dir="checkpoints/ip_adapter",
    allow_patterns=["shopify/final/*", "shopify/train.log"],
)

Generate — minimal inference example

A complete working example is at inference/smoke.py. Core pattern:

python

import torch
from diffusers import StableDiffusionXLPipeline, AutoencoderKL
from PIL import Image
from torchvision import transforms

from adapters.ip_adapter.model import IPAdapterSDXL  # from the GitHub repo

device, dtype = "mps", torch.float16  # also works on CUDA with these

pipe = StableDiffusionXLPipeline.from_pretrained(
    "stabilityai/stable-diffusion-xl-base-1.0",
    vae=AutoencoderKL.from_pretrained(
        "madebyollin/sdxl-vae-fp16-fix", torch_dtype=dtype,
    ),
    torch_dtype=dtype,
).to(device)

adapter = IPAdapterSDXL.load_pretrained(
    unet=pipe.unet,
    load_directory="checkpoints/ip_adapter/shopify/final",
    image_encoder_id="openai/clip-vit-large-patch14-336",
    num_tokens=16,
    adapter_scale=1.0,
).to(device=device, dtype=dtype)

clip_transform = transforms.Compose([
    transforms.Resize(336, interpolation=transforms.InterpolationMode.BICUBIC),
    transforms.CenterCrop(336),
    transforms.ToTensor(),
    transforms.Normalize(
        mean=[0.48145466, 0.4578275, 0.40821073],
        std=[0.26862954, 0.26130258, 0.27577711],
    ),
])

ref = Image.open("my_product.jpg").convert("RGB")
clip_input = clip_transform(ref).unsqueeze(0).to(device=device, dtype=dtype)
with torch.no_grad():
    cond_ip, uncond_ip = adapter.encode_image(clip_input)
ip_hidden_states = torch.cat([uncond_ip, cond_ip], dim=0)  # [uncond, cond] for CFG

image = pipe(
    prompt="a professional product photograph",
    negative_prompt="blurry, low quality, distorted, artifacts",
    num_inference_steps=30,
    guidance_scale=7.5,
    height=512, width=512,
    cross_attention_kwargs={"ip_hidden_states": ip_hidden_states},
).images[0]
image.save("out.png")

Training summary

	Shopify	Etsy	eBay
Train images	353	325	518
Val images	88	81	129
Start val loss (step 250)	0.073747	0.131454	0.058868
End val loss (step 3000)	0.072500	0.132335	0.055920
Best val loss	0.072463 @ step 2000	0.131412 @ step 750	0.055920 @ step 3000
Δ val loss	−1.7% ↓	+0.7% ↑ (mild overfit)	−5.0% ↓
Wall-clock	~9 h	~9 h	~9 h

Hyperparameters (identical across platforms):

Base: stabilityai/stable-diffusion-xl-base-1.0
VAE: madebyollin/sdxl-vae-fp16-fix
Image encoder: openai/clip-vit-large-patch14-336 (frozen)
Optimizer: AdamW, lr=1e-4, (β₁, β₂)=(0.9, 0.999), wd=0.01
LR schedule: cosine with 200-step warmup
Mixed precision: "no" (pure fp32) — required for MPS stability
Image size: 512×512 diffusion path; 336×336 CLIP-branch (fixed by encoder)
Effective batch: 2 micro × 4 grad-accum = 8
Steps: 3000 (= ~75 epochs on Shopify/Etsy, ~46 on eBay)
Gradient checkpointing: enabled (required on 48 GB M4 Pro)
Seed: 42

Training data: curated via data/curate_platform.py in the companion repo. Sources: Amazon Berkeley Objects (ABO), LAION-Aesthetics, DeepFashion2. ~400 images per platform selected by CLIP platform-prompt similarity + category balancing; 80/20 train/val split recorded in manifest CSVs.

Hardware: Apple MacBook Pro M4 Pro, 48 GB unified memory, PyTorch MPS backend.

Known limitations

Captions are identity placeholders. Training used "a product photo" for every sample (BLIP-2 caption generation was deferred). Text conditioning therefore provides minimal per-sample variance; all platform aesthetic signal flows through the IP-Adapter image branch.
Shopify adapter may over-desaturate color. In qualitative spot checks, the Shopify adapter can push outputs towards white even when the reference product has a distinct color. If color fidelity matters, try adapter_scale=0.5–0.75 at inference.
Etsy is mildly overfit after step 750. Val loss rose ~0.7% from step 750 → 3000. The final/ checkpoint is stylistically the strongest but diverges more from the reference content. For content-preserving generation, prefer etsy/checkpoint-500/ (closest available to the val-loss optimum).
fp32 training was forced by MPS. On Apple Silicon, autocast fp16/bf16 for SDXL + IP-Adapter raises an MPS NDArrayMatrixMultiplication assertion on the first forward pass. These weights are architecturally compatible with fp16 inference (verified on MPS — see the example above), but fp16 / bf16 training of this adapter configuration on CUDA has not been tested here.
No ControlNet / segmentation integration in these weights. The companion repo plans a SAM2 + seg-trained ControlNet path; these checkpoints were trained without any spatial conditioning signal.

License

MIT — matches the parent project.

Individual dataset licenses (ABO CC BY-NC 4.0, DeepFashion2 gated, LAION CC BY 4.0) apply to the training data, not to these weight files. Please consult those upstream licenses before commercial use.

Citation

If you use these checkpoints, please cite the parent project:

bibtex

@misc{studiodiffusion2026,
  title  = {StudioDiffusion: Training Platform-Specific Aesthetic Adapters for Product
            Photography Using Segmentation-Conditioned Diffusion Models},
  author = {Shen, Jason and contributors},
  year   = {2026},
  howpublished = {\url{https://github.com/s-zx/StudioDiffusion}},
  note   = {CS 7643 Deep Learning final project, Georgia Tech}
}