SOP — Blog Banner
Image Generation

This step runs after the blog-post-generator skill has produced the month's blog titles. It covers generating one banner image per blog post (and newsletter, since they share the same banner). It does not cover resizing, logo placement, or client delivery — those are later, separate steps.

The key to keeping this fast is a properly set-up, brand-trained chat in ChatGPT. Once the chat has seen the brand's visual references, individual prompts become a single line.

In the company ChatGPT account, go to the specific brand's Project. Look for a chat named something like "Blog banner image generator" (or similar). Most active brands already have one set up and trained.

If the chat doesn't exist yet for this brand, create it now — it will persist and accumulate context across every future monthly run.

Attach visual references before writing any prompt. Use one of the following, in order of preference:

• 1. 3–4 existing banner images from this brand's history (strongest signal — replicates actual output, not an interpreted description)
• 2. A design sheet for the brand, combined with a more descriptive prompt

Using past banner images

Using a design sheet (no past banners)

For each blog title in the month's content plan, in order:

1. Send a short prompt — once the chat is trained, a single line is enough:

2. Select "Create Image" and confirm the ratio is 16:9.
3. Review the output. Blog banners rarely need a retry, but if the style drifts noticeably from the established look, regenerate before moving on.

Repeat for every blog title. The context carries within the same chat — no need to re-reference prompts.

Download each banner immediately after approving it and name it using this convention:

The number corresponds to the blog's order in the content plan for that month. Name at download time — not at the end of the session — so the order is never lost.