Load PosterCraft Prompt

The entire PosterCraft pipeline runs off the single text box in this node, so it pays to treat it like the most important input in the graph - because it is. LoadPosterCraftPrompt takes the poster idea you actually have ("a film festival poster", "a coffee shop ad") and turns it into the PROMPT that flows into the main PosterCraft node. That's the whole job. It's a multiline text field wrapped in a node, which sounds anticlimactic until you realize this is where the quality battle is won or lost.

What it does (and doesn't)

Mechanically it's a pure pass-through - type text, get the same text out as a PROMPT. There's no model loading, no conditioning, nothing clever. It exists so the pack has a clean, typed input for the generation node, and so your prompt can be a long, comfortable block of text instead of a cramped widget. The default is a sample about a "Urban Canvas Street Art Expo" - useful as a first sanity check, and you should change it immediately.

What matters is what happens downstream. Your text goes to the Qwen prompt-rewriter if it's enabled (see Load Qwen Model - the recap only runs if you've pointed it at a real local folder), which expands it into a detailed brief that Flux then renders. The quality chain is: the more specific you are here, the better the recap and the more deliberate the final poster.

How to write a prompt that works

Poster text rendering is where Flux and most models fall apart, and PosterCraft is specifically trained to do it well - but only if you ask. A few habits that get noticeably better results:

• Put the exact title or slogan in quotes. A poster for "Night Market" with the title in huge neon letters beats a night market poster. Qwen's rewrite instructions explicitly preserve quoted text verbatim, and the model learned to render it.
• Describe the text's style, not just its content. Font weight, color, placement. "Bold sans-serif headline across the top" gives the model something concrete to draw.
• Say whether text belongs at all. If you don't want words in the poster, say so - the recap rules only add text elements when the prompt implies one.
• Be specific about the vibe. "striking layouts" and "stylistic harmony" are the paper's buzzwords; your prompt should carry the actual layout and palette.

If Qwen is disabled (the default, remember), your prompt goes straight to Flux, so being detailed matters even more.

The honest version

Because it's just a string wrapper, there's no real troubleshooting here - no install gotchas beyond the pack itself (Manager search "PosterCraft" or git clone https://github.com/Yuan-ManX/ComfyUI-PosterCraft into custom_nodes, then restart). The one thing worth internalizing: if your posters come out generic, the fix is almost never a new model - it's spending two more minutes on this text box. It's the cheapest quality lever in the pack.