This ComfyUI workflow helps brand and creative teams quickly place an existing poster into realistic Out-of-Home (OOH) scenarios. It’s organized in two clear stages. STEP 1 – POSTER REFORMAT takes your source poster and non-destructively reformats it to multiple aspect ratios (vertical, horizontal, square, or custom) while preserving the original design. This stage is driven by LoadImage, PrimitiveNode (for width/height values), PrimitiveBoolean (to enable/disable formats), ComfySwitchNode (to route only the formats you want), and BatchImagesNode (to package multiple outputs). SaveImage captures clean, reformatted versions ready for placement.

STEP 2 – OOH VISUALIZATION composites a chosen reformatted poster into a real or described environment. You can supply a location photo with LoadImage via the IMAGE ENVIRONMENT group or describe a scene in plain language (for example, "OOH billboard in downtown San Francisco, on top of a two-story building, pedestrian eye level") in the PROMPT ENVIRONMENT group. GeminiImage2Node is used as a prompt helper to convert your plain-language description into structured scene notes and file-name context. Two custom processing nodes (ae42e662-5e2b-4f52-b31d-267bd68f1c6f and 88b611c3-ce43-4e7a-a59f-dd16f57a8853) handle the perspective mapping and blending of the poster onto the target surface, so you can fine-tune scale, skew, and overlay strength for believable placement. SaveImage then outputs the final mockups, optionally in batches, so you can compare formats and scenes side by side.