Guyanonymous' Prompt Studio v3

A single-file, fully offline prompt builder for wildcard files.

I built this for my own ComfyUI / Forge Neo workflow and it grew into something worth sharing. It's one HTML file. Open it in Edge or Chrome on Windows, point it at your folder of .txt wildcard files, and design prompts with a live preview. No install, no server, no account, and it cannot upload anything (the page blocks every network request).

Why

Wildcard folders get huge and nested, and it's hard to know what a template will actually produce, which wildcard picked what, or whether a prompt has blown past your model's token limit. This shows all of it as you type.

What it does

• Scans a folder (and subfolders) of .txt wildcards, with no file limit, a filter, and resizable panels

• Template editor with __file__ tags: autocomplete, drag-and-drop, green/red validity, and a peek button that shows a file's lines and swaps the tag for one you choose

• Live sample with every nested wildcard resolved. Open any part to see which sub-wildcard supplied what

• Click a part to re-roll just that part. Right-click to lock it, or pick an exact line from the file

• Reuse one pick everywhere: ${hero=__names__} then ${hero} (great for names and text overlays), or __names$hero__

• Optional weights (3:: text), inline choices {a|b|c}, and pick-several {2-3$$, $$a|b|c}

• Model profiles with a token gauge (recommended length vs. hard cutoff), calibration, editable limits, and a "check length over 200 rolls" report

• Prefix, suffix and negative prompt, and it strips (word:1.2) weights for models that ignore them

• Saves the sample as one paragraph. Batch export of up to 1,000 random prompts (new seed each) as TXT, CSV or JSON, with split files and a matching negative file

• Sweep export: every line of one wildcard while the rest stays random

• "All possible prompts" export for one wildcard (reused picks counted once)

• History, favourites, library search, health check (missing refs, loops, duplicates), where-used, tabs, autosaved versions and projects

• Collapsible tool cards, so the right-hand column shows only what you need

• Remembers separate folders for wildcards, templates, samples, batches and exports

How to start

1. Open the .html file in Edge or Chrome

2. Click Choose folder… and pick your wildcard folder

3. Type a prompt and use __ for suggestions

4. Ctrl+Enter for a new sample, Ctrl+S to save the template

The included guide covers everything in about five minutes.

Version history

• v3: Renamed Guyanonymous' Prompt Studio. Every right-hand card collapses to its title bar (with Collapse all / Expand all, remembered between sessions).

• v2.5: Model profiles with a token gauge; prefix, suffix and negative prompt; TXT/CSV/JSON batch export with split files and a matching negative file; sweep export; history and favourites; library search, health check and where-used; template tabs, autosaved versions and projects.

• v2.4: Reusable picks (${name=__a__}, ${name}, __file$name__) with a Remember… button and a values strip; right-click to lock a part or choose an exact line; weighted lines; pick-several.

• v2.3: Drag-to-resize left panel and centre sections, wrap long file names, sizes remembered.

• v2.2: Peek button in the template editor: see a wildcard's lines and swap the tag for one of them.

• v2.1: Nested wildcards open up in the sample (__body__ → __head__, __torso__, __limbs__) with Expand all, Collapse all, Levels and colour by parent.

• v2.0: Larger scrolling sample panel sharing height with the editor; no limit on the file list.

• v1: First full rewrite: offline folder scan, live nested sample, seeded re-rolls, save/open templates, one-paragraph sample save, batch export, all-possible export, separate remembered folders.

Good to know

• Token counts are estimates until you calibrate them with your own tool's number, and model limits are editable starting points (some unverified), not guarantees

• History, versions and projects live in your browser's storage. Export projects you care about

• Use Edge or Chrome for remembered folders and saving straight into folders; other browsers fall back to Downloads

Free to use and share. Feedback, bug reports and feature ideas welcome.

#StableDiffusion #ComfyUI #Wildcards #PromptEngineering #Offline