NovelAI Prompt Helper

Generates NovelAI prompts from input text and copies them to the clipboard.

An assistant tool for creating complex prompts easily and flexibly on NovelAI's image generation page. Features include templates, wildcards, random selection, prompt variables, and a visual editor. Main features: - Templates: Save frequently used words and phrase combinations as "templates" and call them with a simple notation like T__templateName__T. - Wildcards: Using the W__wildcardName__W format, randomly pick one entry from a registered word list, or join the whole list comma-separated. Per-line weighting such as "2##red hair" is also supported. - Random selection: - {A|B|C}: Randomly picks one of A, B, or C. - {2##A|1##B}: Weighted random selection where A is twice as likely to be picked as B. - NovelAI's official || syntax passes through as-is, and a single pipe can be escaped as \|. - These notations can be nested and used inside templates and wildcards. - Named arguments (function-like templates): Pass arguments to templates and wildcards like T__cat($color: white)__T to dynamically replace $color placeholders in their content. Arguments can also be forwarded from one call to another. - Prompt variables: Write $color = black on its own line to provide a default value for every $color below it, including those inside template and wildcard content. - Prompt Builder: Visually edit branching syntax like {a|b} and weights in a nested block UI without writing text directly. Supports drag & drop of tags and search. - Expected-value preview: Check how random selections will expand (combinations and expected counts per choice) before generating. - Error checking: See undeclared variables, undefined templates/wildcards, mismatched {} braces, unclosed tags, and other syntax issues in a list — without expanding via Ctrl+G. - Tag Suggestions: Suggests tag suggestions while typing. Searches can also be performed from Japanese aliases. - Generate & copy with Ctrl+G: Press Ctrl+G to parse and expand your prompt source, and the finished prompt is automatically copied to the clipboard. It can optionally auto-paste into NovelAI's prompt fields, and supports automatic distribution to character prompts using the <> delimiter. - Prompt saving and management: Organize your prompts and reusable snippets in a folder structure. Supports multi-select drag & drop, sorting by name, and keyboard navigation. - Data persistence and backup: Your in-progress prompt, saved data, templates, and wildcards survive browser reloads. All settings can be exported to and imported from a JSON file for backup. How to use: - After installing the extension, open NovelAI's image generation page. - Click the "Open Prompt" button shown at the top of the screen to open the prompt input area. - Enter your prompt source in the input area using the special notations above. Frequently used prompts can be saved in a folder structure. - Press Ctrl+G to generate the prompt and copy it to the clipboard (it can also auto-fill NovelAI's prompt fields via Settings). - Customize templates and wildcards freely on the options page.