This is a high-definition image upscaling application based on the FLUX.2 Klein 9B + Dual-Stage Upscaling Chain. After users upload an original image, the system first performs a base pixel resize, enhances details through a first-stage redraw, integrates an AI Super-Resolution Model Upscale, applies a second low-strength refinement, and finally outputs a high-definition image with higher clarity, richer details, while closely maintaining the original color and exposure consistency. The file structure clearly shows the complete "upscale + rollback + refinement" chain: ImageScaleToTotalPixels → KSampler → ImageUpscaleWithModel → ImageScaleBy → KSampler. Therefore, this is not just a simple super-resolution, but a production-grade high-definition reconstruction.
It is especially suitable for scenarios such as: turning low-res images into high-res, restoring old photos, generating large cover images, upscaling e-commerce assets, and high-definition poster remaking. Compared with ordinary upscaling, the advantages of this workflow are: It doesn't just make things bigger; it adds details, controls colors, and performs further refinement, making the result closer to the original image yet much clearer. By default, users are recommended to adjust only the Original Image + Base Clarity + Prompt; if you want it sharper or more natural, you can then adjust the two Upscale Strengths.
🎁Claim RH Coins first, then try out the workflow! Go to your avatar in the top right corner → Invitation Code → Enter [rh-v1111] to instantly get 1,000 RH Coins. Log in daily to claim 100 more coins~ For more ComfyUI workflows, tutorials, and gameplay, follow our official WeChat account (AIKSK), with simultaneous updates on Douyin / Bilibili / Xiaohongshu / YouTube (AI-KSK) ✨


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