FLUX Kontext Dev | Intelligent Image Editing

Important Note - 7/4/2025 Update

We've updated the FLUX Kontext Dev workflow with two new group functionalities that significantly expand the editing capabilities:

New Group 1: "Edit specified area" - Precise Region Editing

This group enables targeted editing of specific areas in your image using visual annotation. Perfect for making precise modifications to particular regions without affecting the rest of the image.

How to use:

1. Upload and Annotate: Click on "IMG" to upload your image
2. Create Selection: Select the fourth rectangular shape button in the "Shapes" toolbar
3. Mark Area: Click "Stroke" to choose your annotation color and draw rectangles around areas you want to edit
4. Generate: Use your text prompt to describe what changes you want in the marked areas

This workflow is ideal for making surgical edits - like changing the color of a specific object, adding elements to particular locations, or modifying facial features while keeping everything else untouched.

New Group 2: "Creative Scribble-to-Image Editing " - Scribble-to-Image Editing

This group combines reference image input with freehand scribble guidance to create more intuitive and creative editing workflows.

How to use:

1. Upload Reference Image: Use the Load Image node to upload your original image that you want to edit/transform
2. Create Scribble Guide: Click "Edit" to jump to the painting page
3. Set Canvas: Click "New image" in the upper right corner and set your canvas size to match your reference image
4. Draw Your Vision: Start drawing/scribbling your guide marks using different colors to indicate different elements or changes you want to make
   • Use different colors to represent different objects, areas, or modifications
   • The scribble acts as a visual guide to tell FLUX Kontext Dev where and what to change
5. Confirm Changes: After completing your scribble artwork, click the dark green circular button on the outer side of the upper right corner of the canvas to highlight it
6. Verify Update: Switch back to the ComfyUI page to check if the scribble image has been updated successfully - if updated, you can close the painting page
7. Generate: Run the workflow with your text prompt describing how the scribble should guide the transformation

This workflow excels at intuitive edits where you can literally "paint" your ideas onto a canvas to guide the AI, offering more organic and creative control than rigid rectangular selections.

Both groups work seamlessly with the existing FLUX Kontext Dev workflow and can be used independently or combined for complex multi-stage editing projects.

1. What is FLUX Kontext Dev?

FLUX Kontext Dev is a breakthrough 12-billion parameter multimodal image editing model developed by Black Forest Labs. Built on the rectified flow transformer architecture, this open-source FLUX Kontext Dev model supports simultaneous text and image input, intelligently understanding image context and performing precise editing operations. Unlike proprietary editing tools, FLUX Kontext Dev runs entirely on local machines, providing researchers, developers, and creators with unprecedented flexibility for AI-powered image editing through FLUX Kontext Dev technology.

Think of FLUX Kontext Dev as having a professional photo editor that understands both what you're showing it and what you're telling it to do. Just like how you might tell a human editor "transform this kitchen into a cozy library but keep the same lighting mood," FLUX Kontext Dev can understand complex editing instructions while preserving the essential characteristics of your image through advanced FLUX Kontext Dev processing.

2. How FLUX Kontext Dev Works

FLUX Kontext Dev uses a sophisticated process called flow matching combined with guidance distillation. In simple terms, imagine FLUX Kontext Dev as an artist who can see your original image and read your editing instructions simultaneously. The FLUX Kontext Dev model first understands the content, composition, and style of your input image, then gradually transforms it according to your text prompt while maintaining crucial elements like character features, object relationships, and overall composition through FLUX Kontext Dev algorithms.

The "flow matching" technique in FLUX Kontext Dev allows the model to create a smooth transformation path from your original image to the edited result, ensuring that changes feel natural and coherent. The guidance distillation training makes FLUX Kontext Dev more efficient, requiring fewer computational steps to achieve high-quality results compared to traditional diffusion models, making FLUX Kontext Dev the ideal choice for professional image editing workflows.

3. Key features and Benefits of FLUX Kontext Dev

Character Consistency with FLUX Kontext Dev: FLUX Kontext Dev excels at preserving unique elements across multiple scenes and environments. Whether you're editing a person's appearance or modifying objects, FLUX Kontext Dev maintains recognizable features and characteristics throughout the editing process.

Precise Local and Global Editing: The FLUX Kontext Dev model can make targeted modifications to specific parts of an image without affecting other areas, or apply comprehensive changes across the entire image when needed through FLUX Kontext Dev's advanced processing capabilities.

Style Transfer and Reference: Generate novel scenes while preserving the unique style of reference images using FLUX Kontext Dev, allowing for consistent aesthetic transformations through FLUX Kontext Dev's style understanding.

Iterative Editing Capability: FLUX Kontext Dev's robust consistency allows users to refine images through multiple successive edits with minimal visual drift, enabling complex multi-step editing workflows powered by FLUX Kontext Dev technology.

Interactive Speed: FLUX Kontext Dev is optimized for minimal latency in both image generation and editing, making FLUX Kontext Dev suitable for real-time creative workflows.

Open-Source Flexibility: Unlike proprietary solutions, FLUX Kontext Dev provides complete local control, enabling custom integrations and modifications through the FLUX Kontext Dev framework.

4. How to Use FLUX Kontext Dev in ComfyUI

4.1 Basic FLUX Kontext Dev Workflow Setup

Step 1 - Upload Images for FLUX Kontext Dev:

1. Image Input Options for FLUX Kontext Dev:
   • Single Image: Use Load Image (from Outputs) for basic FLUX Kontext Dev editing
   • Multiple Images: Use Image Stitch node to combine images, then connect to the FLUX Kontext Dev workflow
2. About FLUX Kontext Dev Edit: The FLUX Kontext Dev workflow includes helpful notes - make sure to read them for optimal FLUX Kontext Dev guidance
3. Image Scaling: The FluxKontextImageScale node automatically handles image preprocessing for FLUX Kontext Dev

Step 2 - FLUX Kontext Dev Prompt Configuration:

1. CLIP Text Encode (Positive Prompt) for FLUX Kontext Dev: Write your editing instruction in English
   • Example: "Transform the room into a cyberpunk nightclub with neon lighting effects and holographic displays"
2. Preview Image: Monitor your input image in the FLUX Kontext Dev preview section
3. Reference Settings: The FLUX Kontext Dev workflow includes various notes for parameter guidance - please read them carefully for optimal FLUX Kontext Dev results

Step 3 - Generate with FLUX Kontext Dev:

1. FLUX Kontext Dev Sampling Settings: Adjust KSampler parameters:
   • steps: 20 (default for FLUX Kontext Dev)
   • cfg: 1.0 (guidance scale for FLUX Kontext Dev)
   • sampler_name: euler (recommended for FLUX Kontext Dev)
   • denoise: 1.00 (FLUX Kontext Dev processing strength)
2. Execute FLUX Kontext Dev: Click Run
3. Save FLUX Kontext Dev Results: View and save your edited image in the Save Image node

Important Note: The FLUX Kontext Dev workflow contains helpful notes and guidance throughout - make sure to read these FLUX Kontext Dev notes as you work through the process for optimal results.

4.2 FLUX Kontext Dev Editing Techniques and Applications

Basic Object Modifications with FLUX Kontext Dev

• Color Changes: "Transform the bicycle to metallic silver finish" using FLUX Kontext Dev
• Clothing Updates: "Change the jacket to a leather bomber style" with FLUX Kontext Dev processing
• Object Replacement: "Replace the laptop with an antique typewriter" through FLUX Kontext Dev

Style Transfer and Artistic Transformation using FLUX Kontext Dev

• Art Style Conversion: "Convert to impressionist painting style with soft brushstrokes and pastel colors" via FLUX Kontext Dev
• Historical Periods: "Transform to medieval manuscript illumination style" with FLUX Kontext Dev
• Artistic Mediums: "Convert to watercolor painting with flowing pigment effects and paper texture" using FLUX Kontext Dev

Environmental and Background Changes with FLUX Kontext Dev

• Scene Modification: "Transform the setting to a futuristic space station while maintaining the subject's pose" through FLUX Kontext Dev
• Lighting Adjustments: "Change to dramatic evening scene with warm candlelight ambiance" using FLUX Kontext Dev
• Weather Effects: "Add heavy snowfall and winter atmosphere while preserving the original composition" via FLUX Kontext Dev

Character and Portrait Editing with FLUX Kontext Dev

• Age Transformation: "Make the person appear 15 years younger while keeping their distinctive features" using FLUX Kontext Dev
• Expression Changes: "Modify the expression to show surprise and wonder" with FLUX Kontext Dev
• Hairstyle Modifications: "Change to long braided hair with decorative ribbons" through FLUX Kontext Dev

Text and Graphics Integration using FLUX Kontext Dev

• Adding Text: "Insert bold graffiti-style text 'REBEL' on the brick wall" with FLUX Kontext Dev
• Logo Placement: "Add a retro diner logo to the window while maintaining glass reflections" using FLUX Kontext Dev
• Sign Modifications: "Change 'ENTRANCE' to 'EXIT' on the doorway sign" through FLUX Kontext Dev

Advanced FLUX Kontext Dev Editing Scenarios

• Multi-Image Combination: Use the Image Stitch node to combine multiple images before FLUX Kontext Dev editing
• Iterative Refinement: Perform multiple successive edits using the Load Image(from output) node with FLUX Kontext Dev
• Perspective Changes: "Shift the viewpoint to bird's eye view from directly above" using FLUX Kontext Dev

4.3 FLUX Kontext Dev Parameter Control and Optimization

Guidance Scale for FLUX Kontext Dev: Controls the strength of text prompt adherence in FLUX Kontext Dev

• Higher values (3.0-5.0): Stronger adherence to prompt, more dramatic changes with FLUX Kontext Dev
• Lower values (1.5-2.5): Subtler changes, better preservation of original image using FLUX Kontext Dev

FLUX Kontext Dev Sampling Settings:

• Steps: Typically 20-50 steps for high quality FLUX Kontext Dev results
• Denoise: Controls how much of the original image is preserved in FLUX Kontext Dev (0.3-0.8 for editing)

FLUX Kontext Dev Model Variants:

• Standard FLUX Kontext Dev: Balanced performance for most editing tasks
• FP8/FP4 Variants: Optimized FLUX Kontext Dev for speed and memory efficiency on compatible hardware

5. Prompt Engineering for Optimal FLUX Kontext Dev Results

5.1 Best Practices for FLUX Kontext Dev

Be Specific and Clear with FLUX Kontext Dev

• Wrong: "Make it more interesting"
• Correct: "Transform the garden into a magical fairy tale setting while keeping the same flower arrangements" using FLUX Kontext Dev

Use Preservation Language with FLUX Kontext Dev

• Include phrases like "while maintaining," "preserving," or "keeping the same" to specify what should remain unchanged in FLUX Kontext Dev
• Example: "Convert to art deco style while maintaining the original subject positioning" with FLUX Kontext Dev

Break Complex Edits into Steps for FLUX Kontext Dev

• Instead of "Turn the person into a space explorer on Mars," use multiple FLUX Kontext Dev steps:
  1. "Change the outfit to futuristic space gear while preserving body proportions" using FLUX Kontext Dev
  2. "Transform the background to Martian landscape with red terrain" with FLUX Kontext Dev

5.2 Common FLUX Kontext Dev Editing Templates

Object Modification Template for FLUX Kontext Dev: "Transform [specific object] into [new object/state], while keeping [elements to preserve] identical" using FLUX Kontext Dev

Style Transfer Template for FLUX Kontext Dev: "Convert to [specific style with details], while maintaining [composition/character/lighting] exactly as original" with FLUX Kontext Dev

Background Replacement Template for FLUX Kontext Dev: "Replace the background with [detailed description], keep the main subject in identical position and stance" using FLUX Kontext Dev

Character Editing Template for FLUX Kontext Dev: "Alter [specific feature] to [new state], while preserving [other facial features/expression/pose] unchanged" with FLUX Kontext Dev

6. Advanced FLUX Kontext Dev Workflow Techniques

Multi-Round Iterative Editing with FLUX Kontext Dev Use the Load Image(from output) node to chain multiple FLUX Kontext Dev editing operations:

1. First FLUX Kontext Dev edit: Initial style transformation
2. Second FLUX Kontext Dev edit: Adjust specific details
3. Third FLUX Kontext Dev edit: Modify or enhance elements
4. Final FLUX Kontext Dev edit: Perfect color and lighting balance

Multi-Image Processing with FLUX Kontext Dev The FLUX Kontext Dev workflow supports multiple image input methods:

• Image Stitch Node for FLUX Kontext Dev: Combine multiple images using the Image Stitch node before FLUX Kontext Dev editing
  • Adjust direction (right/left/up/down) to control how images are combined for FLUX Kontext Dev
  • Set match_image_size to true for consistent sizing in FLUX Kontext Dev
  • Configure spacing_width and spacing_color for image separation in FLUX Kontext Dev
• Load Image (from Outputs) for FLUX Kontext Dev: Use this node for iterative FLUX Kontext Dev editing and accessing previously generated results
• About FLUX Kontext Dev Edit: Pay attention to the FLUX Kontext Dev workflow notes that provide helpful guidance for optimal results

FLUX Kontext Dev Workflow Notes and Guidance The ComfyUI FLUX Kontext Dev workflow includes built-in notes and instructions throughout the node graph. These FLUX Kontext Dev notes contain valuable tips for:

• FLUX Kontext Dev parameter optimization suggestions
• Common FLUX Kontext Dev troubleshooting solutions
• Best practices for specific FLUX Kontext Dev editing tasks
• FLUX Kontext Dev model loading requirements and compatibility

Important: Always read the FLUX Kontext Dev workflow notes as you progress through each step - they provide context-specific guidance that can significantly improve your FLUX Kontext Dev editing results.

Batch Processing Considerations for FLUX Kontext Dev

• Use consistent prompting templates for similar edits across multiple images with FLUX Kontext Dev
• Maintain similar guidance scale settings for FLUX Kontext Dev consistency
• Consider using the group node workflow for streamlined FLUX Kontext Dev batch operations

More Information about FLUX Kontext Dev

For additional technical details and FLUX Kontext Dev development resources:

• Original FLUX Kontext Dev Model Repository:
• FLUX Kontext Dev Model Weights:
• FLUX Kontext Dev Technical Paper:

Acknowledgements

This workflow is powered by FLUX Kontext Dev, developed by Black Forest Labs. The FLUX Kontext Dev model represents a significant advancement in open-source image editing technology, providing researchers and creators with professional-grade tools for AI-powered image manipulation through FLUX Kontext Dev. Full credit goes to the Black Forest Labs team for their innovative work in developing this breakthrough multimodal editing model, FLUX Kontext Dev.