Image models follow structure far better than they follow paragraphs. Describe roughly what you want and get a field-by-field prompt covering subject, composition, lighting, palette, lens, texture, and what to exclude, as XML or JSON, ready to paste into your generator. This tool writes the prompt, it does not render the image itself.
The difference between a flat render and a striking one is almost never prompt length. It is whether each field carries real visual information.
Structure separates the fields. In a paragraph, "golden hour" and "blue palette" compete inside one run-on sentence and the model averages them. As tagged fields, lighting and palette land in their own slots, so you get the picture you asked for and can edit one field without disturbing the rest.
XML is the safest default and reads well when you are hand-editing. JSON suits anything programmatic, like a batch script or an API call. One-line is for Midjourney's prompt box and other places a single string is all you get. Max detail adds layered foreground/background description and three variations to try.
No. It writes the prompt. Paste the output into an image generator such as Midjourney, DALL-E, Stable Diffusion, or Flux to render the picture.
They don't parse XML the way a program does, but the tag names act as strong labels and the line breaks stop fields bleeding into each other. If your generator prefers plain text, the One-line mode gives you the same content as a single dense string.
Things to keep out of the frame. It is filled with the artefacts that actually go wrong for your subject, such as warped hands on people or illegible signage on street scenes. Most generators take it as a negative prompt; Midjourney uses --no.