ComfyUI: Creative replacement with Flux Kontext

ComfyUI Try it →Watch full video →Urban Decoders · Aug 2025

Demo summary

The user demonstrates how to change a specific part of an image, such as replacing a building entrance with a glass door, using the Flux Kontext model in ComfyUI while maintaining the original scene context.

Step-by-step

Load the required models from the dropdown menus in Step 1
Set your seed and quality steps in the KSampler
Drag the image you want to edit into the input node in Step 2
Right-click and select 'Queue selected output node' to preview the scaled aspect ratio
Enter your prompt in Step 3, specifying the change followed by the phrase 'while keeping the same camera object scene style'

Options

Use the Image Stitch node to combine multiple image references
Adjust resolution via the Image Scale node to optimize for the Flux Kontext model

Watch out for

The second image input is deactivated by default (indicated by purple) and requires activation if using multiple references

Tips

Use 1024x1024 as the typical resolution for best results
Follow the 'handy notes' at the top of the workflow for model placement and requirements
Explicitly list elements you want to remain unchanged in the prompt to maintain scene context

All demos from “Flux Kontext – 10 Creative AI Use Cases EXPLAINED for Design and Architecture”

0:361:56Creative replacement with Flux KontextCurrentThe user demonstrates how to change a specific part of an image, such as replacing a building entrance with a glass door, using the Flux Kontext model in ComfyUI while maintaining the original scene context.ComfyUI· AI Inpainting
3:241:56Combine image references for furniture placementUsing the image stitch node in ComfyUI, the creator demonstrates how to take an empty room and populate it with furniture from a second reference image using Flux Kontext.ComfyUI· AI Image Combiner
5:200:53Change season to winter in architectural scenesThe demonstration shows how to use a text prompt to transform a summer architectural shot into a winter scene with snow on rooftops and trees using Flux Kontext.ComfyUI· AI Inpainting
6:130:34Day to night time-of-day transformationThe creator shows how to prompt Flux Kontext to change a daytime architectural shot into an evening scene with ambient lighting.ComfyUI· AI Relighting
6:471:52Selective inpainting with crop and stitchUsing the 'ComfyUI inpaint crop and stitch' nodes, the user demonstrates masking a specific window area to insert a glowing LED digital facade.ComfyUI· AI Inpainting
8:540:42Style transfer to watercolor paintingThe video shows how to use a reference image to transform a realistic house photo into a watercolor painting style using Flux Kontext.ComfyUI· AI Style Transfer
11:001:54Applying LoRAs for line drawings and Lego stylesThe user demonstrates stacking LoRA models in ComfyUI to transform buildings into line drawings or Lego-style structures using Flux Kontext.ComfyUI· AI Style Transfer
12:540:41Editing text on shop frontsThe demonstration shows how to use Flux Kontext to change specific text on a shop sign while maintaining the original font style and position.ComfyUI· AI Inpainting
14:250:55Applying texture references to 3D objectsThe video demonstrates applying a tiled pattern texture from one image onto a white sofa in another image, effectively performing AI-based UV mapping.ComfyUI· AI Texture Generator
Watch “Flux Kontext – 10 Creative AI Use Cases EXPLAINED for Design and Architecture” →

AI Inpainting

1:02:141:23Landscape composition control with Canny ControlNetShows how to use the Canny edge pre-processor to maintain the shape of mountains while changing the lighting to a sunset.AI Search
6:360:29Adjust mask expansion settingsThe user demonstrates adjusting the 'Grow Mask with Blur' node's expand value to accommodate larger replacement characters.MDMZ
3:120:44Anime character replacement with MochaA demonstration of replacing one anime character with another using a reference image, highlighting the tool's performance on complex outfits and hair.AI Search
7:201:48Edit image details with Flux KontextThe user shows how to load a reference image and use a text prompt to change specific features, such as changing a cartoon bunny's eye color to red.pixaroma
19:191:08Modify hairstyles and facial featuresThe creator shows how to change a subject's hair color and style (e.g., to a blunt bob with bangs) while attempting to maintain facial consistency using Flux Kontext.pixaroma
21:030:26Edit text within an imageA demonstration of Flux Kontext's ability to change text on a 3D render from 'Welcome' to 'Pixaroma' while maintaining the original font style and perspective.pixaroma
23:191:55Remove objects using Mask Editor and InpaintingThe user demonstrates precisely removing a necklace from a portrait by painting a mask in the ComfyUI Mask Editor and using an inpainting prompt.pixaroma
16:571:43Generate composite image with Flux 2The creator demonstrates image-to-image generation by uploading two reference photos and using a text prompt to replace a logo on a coffee can with his own headshot using the Flux model.WINBUSH
20:010:28Text-to-image manipulation in ComfyUIThe video shows how to use a text prompt to attempt to rotate an object in an image within a specific node-based workflow.WINBUSH
15:063:12Transform 3D scenes with Qwen2-VL (Qwen-Edit)The creator uses the Qwen-Edit workflow to perform complex scene modifications, such as changing weather to rain or snow, while preserving the original 3D geometry and text.Matt Hallett Visual
20:221:07Fix text and faces using Crop and StitchA demonstration of a custom 'crop image' node to isolate specific areas like signs or faces, regenerate them at native resolution, and stitch them back into the high-res image.Matt Hallett Visual
8:230:24Change hairstyles with AIA demonstration of using an outfit change system to apply a new haircut to a character by using a hairstyle image as a reference.Yaroflasher