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Upscale images with ComfyUI cloud workflows

ComfyUITry it →Watch full video →pixaromapixaroma·

Demo summary

The user demonstrates an upscaler workflow on Running Hub, showing how to adjust the denoise value to add detail while increasing image resolution.

Step-by-step

  1. Launch the upscaler workflow on Running Hub
  2. Upload your image to the workflow
  3. Add a prompt to describe the image
  4. Adjust the denoise value based on your desired level of detail
  5. Compare the original and upscaled versions by moving the mouse over the output

Options

  • Set denoise to 0.8 to stay similar to the original
  • Increase denoise to 0.95 to allow the AI more freedom to add new details
  • Lower the denoise value below 0.8 for less variation

Watch out for

  • The upscaler can sometimes add too much sharpness with no direct way to control it
  • Results are random and vary significantly depending on the specific image and AI training

Tips

  • Use a higher denoise value if you don't need the output to be perfectly identical to the original
  • Compare the 2x and 4x upscaled versions to see which resolution handles the detail better

Highlights

“for some images it does a good job while for others not so much um it's always random with AI”

All demos from “ComfyUI Tutorial Series Ep 35: How to Run ComfyUI in the Cloud”

  1. 3:181:08Run a Flux ComfyUI workflow on Running HubThe user demonstrates loading and running a pre-built ComfyUI workflow using Flux and LoRA models on the Running Hub cloud platform to generate an illustration.ComfyUIAI Image Generator
  2. 5:222:10Import and fix local ComfyUI workflows in the cloudThe creator shows how to import a local JSON workflow into Running Hub and resolve 'red node' errors by re-mapping missing T5, Clip, and VAE models to the platform's available versions.ComfyUIAI Image Generator
  3. 10:521:09Manage and upload AI models to Running HubThe user demonstrates how to select LoRA models within a workflow and the step-by-step process for uploading custom checkpoints or LoRAs to the cloud workspace.ComfyUIAI Image Generator
  4. 12:371:20Create 3D text using ControlNet in the cloudA demonstration of using a ControlNet workflow on Running Hub to transform a simple black-and-white text image into a 3D rendered effect.ComfyUIAI Style Transfer
  5. 15:120:21Run Midjourney via ComfyUI API nodesThe creator demonstrates a specific workflow that connects to the Midjourney API within the ComfyUI interface to generate images using version 6.1.ComfyUIAI Image Generator
  6. 16:431:06Upscale images with ComfyUI cloud workflowsCurrentThe user demonstrates an upscaler workflow on Running Hub, showing how to adjust the denoise value to add detail while increasing image resolution.ComfyUIAI Image Upscaler
  7. Watch “ComfyUI Tutorial Series Ep 35: How to Run ComfyUI in the Cloud” →

AI Image Upscaler

  1. 6:141:19Add an image upscaling node to a workflowThe user demonstrates extending a workflow by right-clicking to add an 'Upscale Image' node and connecting the node pins to upscale the output by 2X.Kevin Stratvert
  2. 9:521:53Upscale an existing image to 4K with PiDThe video demonstrates uploading a landscape photo into a ComfyUI workflow and using the PiD (Pixel Diffusion) model to upscale it to 4096 resolution in under 10 seconds.AI Search
  3. 13:200:38Compare original vs upscaled image using RG3 nodesThe user adds an 'image compare' node by RG3 to the ComfyUI canvas to show a side-by-side slider comparison of the blurry original image versus the sharp PiD upscaled result.AI Search
  4. 14:274:08Generate and upscale images using Zee Image and PiDA demonstration of a combined workflow where Zee Image Turbo generates a 1K image of a red panda which is then automatically passed into the PiD upscaler for a 4K final output.AI Search
  5. 0:050:32Accessing ComfyUI on Nordy.aiThe user navigates to Nordy.ai, searches for the 'real upscale 8K' workflow, and launches the ComfyUI interface within the browser.Swastik Creations Lab
  6. 1:491:28Simple non-AI image resizing in ComfyUIThe creator demonstrates a basic 'Upscale Image By' node that performs a standard resolution increase without AI, similar to Photoshop resizing, and uses an RG3 image comparer node to view the results.pixaroma
  7. 3:193:04Upscaling with Neural Network modelsThis clip shows how to use the 'Upscale Image (using Model)' node in ComfyUI with various PTH models like UltraSharp and 8x upscalers to sharpen and reconstruct details.pixaroma
  8. 6:233:22Tiled Diffusion upscaling with Zimage TurboThe creator walks through a complex workflow using Tiled Diffusion and the Zimage Turbo model to upscale images while managing VRAM by processing the image in smaller tiles.pixaroma
  9. 9:451:24Upscaling with Nunchaku Flux ManiaA demonstration of using a modified Flux.1 Dev model (Flux Mania) via Nunchaku nodes to perform a 2x upscale that enhances skin textures and fine details.pixaroma
  10. 11:103:10High-fidelity upscaling with SeedVR2The video shows the setup and execution of the SeedVR2 node pack, demonstrating how to select specific models and adjust resolution for sharp, consistent upscaling results.pixaroma
  11. 14:271:304K upscaling with Nano Banana Pro APIThe creator demonstrates using the paid Nano Banana Pro node to achieve 4K resolution upscaling through an external API, showing the significant detail improvement in the final result.pixaroma
  12. 15:570:46Creative upscaling with Recraft modelThis clip shows the Recraft node in action, which performs a 'creative upscale' to generate clean, realistic variations of an image with added textures.pixaroma
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