Usage

1. Use a tool like audiobook-creator to extract the text of an audiobook.
2. Place it in extracted_texts/TITLE by AUTHOR.txt.
3. Run make_cover_briefs.lua. (Relies on Ollama and gemma4:12b-mlx and requires at least a Mac mini M4 base model.)
4. Cover briefs will be placed in cover_briefs.
5. A prompt ready to paste directly into Gemini will be in for_gemini. An extra border is prompted for to make cropping easy to remove the Gemini watermark.

If Gemini rejects the prompt, adding "Remove any elements that may go against guidelines before generating the image." to the opening paragraph can fix that issue.

Gemini is really bad about adding hardcover seams. Despite being instructed not to, it shows up sometimes. More strong prompting breaks other features, so the best way to deal with it is to request its removal after the initial image is generated.

The local model sometimes completely forgets critical details of characters, so it's important you have some familiarity with the work before running the generator to check accuracy.