n8n Form to HiAPI Product Image Generator & Editor Workflow

Generate or edit product marketing images from an n8n Form—automatically with HiAPI

This n8n workflow turns a simple product-image brief into a finished marketing image using HiAPI. Submit details through an n8n Form, and the workflow generates a text-to-image marketing visual or performs image-to-image transformation—then polls until the final image URL is ready.

What this workflow does

• Collects a brief via n8n Form: The submission includes a product-image brief, a generation mode, an aspect ratio, and an optional reference image URL.
• Selects the correct HiAPI model:
  • Text-to-image uses gpt-image-2/text-to-image.
  • Image-to-image uses gpt-image-2/image-to-image and includes the reference image URL only for this mode.
• Creates an asynchronous generation task in HiAPI and stores the returned task ID.
• Waits and polls for completion: The workflow waits 20 seconds, requests task status using the task ID, and repeats until it reaches a terminal state.
• Returns results:
  • On success: task ID, status, and the generated image URL.
  • On failure: task ID, status, and the returned error message.

Use cases

• SaaS operators creating consistent product marketing images without leaving n8n.
• Automation engineers building a “request an image” form for teams (copy + aspect ratio + mode).
• Transforming existing product photos into new marketing variations using image-to-image via a public reference URL.

Technical details

• n8n Form Trigger, plus nodes: if, set, wait, and HTTP Request.
• HiAPI integration using HTTP header auth: Authorization: Bearer YOUR_HIAPI_API_KEY.
• Includes HiAPI polling logic (wait 20 seconds → check status by task ID → loop until terminal state).

Setup notes: Ensure your HiAPI account has sufficient balance for a 1K image. For image-to-image mode, provide a publicly reachable reference image URL in the form submission.