ComfyUI outpainting with Flux Klein 9B and Pixaroma nodes

This tutorial builds a ComfyUI outpainting workflow with Flux Klein 9B and Pixaroma nodes. Setup covers updating the nodes and placing the model, text encoder, outpainting LoRA and VAE in their folders. The presenter offers FP8 and int8 model options and says int8 runs faster on his PC.

The Outpaint node adds gray areas by aspect ratio or by individual side. Outpaint Stitch then pastes the original image over the generated result and blends its edges. The presenter reports his best results at 1 or 1.5 megapixels, warning that 2 or 3 megapixels can slow generation and introduce alignment errors. His workflow snaps dimensions to multiples of 16.

Seam adjustments use a fixed seed to make comparisons easier. Feather defaults to 64 and Color Match to 100; setting Color Match to zero disables it. Bypassing stitching lets the model recreate the whole frame, which may improve the transition but changes the original image. Specific prompts can also disrupt the boundary when the added area is small.

The remaining walkthrough covers LoRA trigger words, Text Join prompt assembly and a compact image loader. Control Panel centralizes sliders and switches. Run Log records up to 10 runs, supports notes and exports a TXT file.