flux-2-klein_UNLOCKED | Ultimate_Img2Img_Workflow

FLUX.2 Kontext Img2Img — Multi-Reference + Strength-Guidance Image Editing Workflow by TripTrap

Files:
flux-2-klein-9b-kv-fp8.safetensors

qwen_3_8b_fp8mixed.safetensors

flux2-vae.safetensors

Description

This workflow turns FLUX.2's native Kontext architecture into a fully-featured image-to-image

editing powerhouse. Built from the ground up over months of iteration, it gives you surgical

control over how reference images influence your generations — from subtle texture injection to

complete stylistic transformation.

Whether you're editing album art, refining character designs, or exploring glitch aesthetics,

this workflow lets you feed in up to 2 reference images and dial in exactly how much they

influence the output with a single strength slider.

### What makes this different

- FLUX.2 Native — This isn't a hack. It uses FLUX.2 klein 9B KV-FP8's built-in Kontext reference

system for clean, artifact-free image conditioning

- Strength Control — A denoise slider that actually works. 0.0 = no change, 1.0 = full

generation. No cryptic parameters.

- Multi-Reference — Chain up to 6 reference images through the Kontext system for composite influences

- Prompt Engineering — Built-in text concatenation for complex multi-source prompts

- VRAM Safe — Auto-scales images to 0.5MP before encoding, preventing accidental OOM crashes

- 4-Step Generation — Optimized for FLUX.2's distilled inference. Blazing fast.

### How it works

```

Reference Image → Scale → VAE Encode ──┐

├──→ ReferenceLatent Chain → Conditioning → Sampler

Reference Image → Scale → VAE Encode ──┘

↑

Prompt → Text Concat → CLIP Encode → Flux Guidance ──────────┘

```

The reference images are injected directly into FLUX.2's Kontext conditioning system — the same

mechanism the BFL API uses internally. No separate style models, no CLIP vision encoders, no

bloat.

### Requirements

Models (download and place in ComfyUI/models/):

┌────────────────────────────────────┬───────────────────┐

│ File │ Location │

├────────────────────────────────────┼───────────────────┤

│ flux-2-klein-9b-kv-fp8.safetensors │ diffusion_models/ │

├────────────────────────────────────┼───────────────────┤

│ qwen_3_8b_fp8mixed.safetensors │ text_encoders/ │

├────────────────────────────────────┼───────────────────┤

│ flux2-vae.safetensors │ vae/ │

└────────────────────────────────────┴───────────────────┘

Custom Nodes: (install via ComfyUI Manager)

- rgthree-comfy (Power Lora Loader)

- ComfyUI-Custom-Scripts (ShowText)

- ComfyUI_Comfyroll_CustomNodes (CR Aspect Ratio)

### How to use

1. Load the workflow JSON (drag into ComfyUI)

2. Load your base image in Ref 1

3. Optionally load a second reference in Ref 2

4. Write your prompt

5. Set denoise (0.65 is a good starting point)

6. Queue it

### Tips

- 0.5–0.65 denoise: Subtle edits, preserves composition

- 0.65–0.8 denoise: Balanced changes with strong reference influence

- 0.8–1.0 denoise: Heavy transformation, prompt dominates

- Use 4 steps for speed, or up to 8 for more refinement

- Keep images under 1MP for best performance

### License

This workflow is free to use under the FLUX Non-Commercial License.

Respect the model license terms.

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Built by TripTrap — glitch artist, experimental pop producer, and AI alchemist.

Every image this workflow generates carries a frequency. Make it yours.