Chris
dd0b22fc32
Centralize preview extension lookup so browse UI and preview API both detect png, webp, jpg, and jpeg thumbnails.
10 KiB
CrasH Utils Custom Nodes
A collection of utility nodes and games for ComfyUI — visual LoRA loaders, image tools, SDXL helpers, LLM integration, and browser games for long generation queues.
Table of contents
Node index
All nodes appear under the CrasH Utils menu in ComfyUI, grouped by subcategory:
| Node | Category | What it does |
|---|---|---|
| Grid LoRA Loader | Loaders | Multi-LoRA picker with thumbnail grid, trigger tags panel, and strength controls |
| List LoRA Loader | Loaders | Same LoRA features in a compact vertical list layout |
| Checkpoint Names | Loaders | Outputs the selected checkpoint name as a string |
| Resolution Picker | Image | Visual picker for five common resolutions → width & height |
| SDXL Resolution | Image | Dropdown of every SDXL-trained resolution |
| SDXL Resolution To Dimensions | Image | Splits SDXL Resolution into separate width & height outputs |
| Image Glitcher | Effects | Glitch art with chromatic aberration and scanlines |
| Color Stylizer | Effects | Keep one color, desaturate everything else |
| Query Local LLM | LLM | Send prompts to OpenAI-compatible APIs (local or cloud) |
| Extract Character Info | LLM | Read embedded character metadata from a PNG file path |
| Snake Game 🐍 | Games | Classic Nokia-style snake |
| Tetris 🟦 | Games | Block-stacking puzzle |
| Dino Game 🦖 | Games | Chrome-style endless runner |
| Space Invaders 👾 | Games | Arcade shooter |
| DOOM 👹 | Games | Full DOOM Shareware in the browser |
Installation
Recommended: install via ComfyUI Manager — search for CrasH Utils.
Manual:
cd ComfyUI/custom_nodes/
git clone https://github.com/chrish-slingshot/CrasHUtils.git
Restart ComfyUI. No extra dependencies — everything runs out of the box.
Loaders
Grid LoRA Loader
Visual multi-LoRA loader with a thumbnail grid browser, selected-LoRA panel, and per-tag trigger output. Inspired by rgthree's LoRA tooling.
Outputs: MODEL, CLIP, triggers
| Panel | Actions |
|---|---|
| Browse | Navigate folders, search, SFW toggle, double-click to add/remove LoRAs, right-click for info |
| Selected | Single-click enable/disable, double-click remove, ⚙ for strength |
| Trigger Tags | Toggle which tags are sent to the triggers output |
SFW toggle: When enabled, any folder named NSFW (case-insensitive) is hidden from browse and search — at any depth in your LoRA library. Turn it off to show those folders again.
Thumbnails: place an image next to each .safetensors file using the same base name — .png, .webp, .jpg, or .jpeg (.png is preferred when multiple exist). Right-click a Preview Image → Save as LoRA thumbnail to save from a generated image (saved as .png, overwrites existing).
Trigger words: companion .txt file beside the LoRA (same base name). One per line or comma-separated.
Panels: drag dividers between Browse / Selected / Tags to resize. Settings persist per node.
Typical workflow:
- Connect
modelandclip - Browse and double-click LoRAs to add them
- Tune strength with ⚙; disable any you want to keep but not apply
- Toggle trigger tags for your prompt
- Connect
MODEL,CLIP, andtriggersdownstream
List LoRA Loader
Same backend and outputs as the grid loader, in a vertical list layout. Better when you want names and trigger tags readable at a glance rather than a thumbnail wall.
Browse: folder navigation, search, SFW toggle, double-click add/remove, right-click info. Trigger tags appear inline on each row.
Selected: same enable/disable, strength, and remove controls as the grid loader.
Everything else — thumbnails, .txt triggers, Preview Image save, MODEL / CLIP / triggers outputs — works the same as Grid LoRA Loader.
Checkpoint Names
Pass-through node that outputs the selected checkpoint filename as a STRING. Useful when a workflow needs the checkpoint name as text (logging, filenames, LLM prompts, etc.).
Image
Resolution Picker
Click a resolution to output Width and Height integers. Each option shows a small aspect-ratio preview.
| Resolution | Orientation |
|---|---|
| 1440 × 868 | Landscape |
| 1440 × 1040 | Landscape |
| 1280 × 1280 | Square |
| 1040 × 1440 | Portrait |
| 868 × 1440 | Portrait |
Connect outputs to Empty Latent Image or anywhere you need dimensions. For the full list of SDXL-trained sizes, use SDXL Resolution instead.
SDXL Resolution
Dropdown of all official SDXL-trained resolutions (1024×1024, 1152×896, 1216×832, etc.) with aspect ratio labels. SDXL gives best results at these specific sizes.
SDXL Resolution To Dimensions
Splits the SDXL Resolution string into separate width and height outputs — one connection instead of two downstream.
Effects
Image Glitcher
Authentic glitch art with chromatic aberration and CRT scanlines. Based on the HTML image glitcher by Felix Turner.
| Parameter | Range | Effect |
|---|---|---|
| glitchiness | 0–100 | Corruption and chromatic aberration intensity |
| brightness | 0–100 | Brightens the image; useful with scanlines |
| scanlines | toggle | CRT TV scanlines |
Color Stylizer
Pick one color to preserve; everything else is desaturated.
| Parameter | Effect |
|---|---|
| target_color | Color to keep (hex or RGB) |
| tolerance | How closely colors must match |
| desaturation | How much to grey out non-matching areas |
LLM
Query Local LLM
Send prompts to any OpenAI-compatible API and get text back in your workflow — prompt expansion, descriptions, or general text tasks.
Works with OpenAI, LM Studio, Ollama, text-generation-webui, and other compatible endpoints. Configure URL, system message, context length, and seed.
Extract Character Info
Reads embedded character metadata from a PNG file path (base64-encoded text chunks) and outputs it as a string. Useful for workflows that store character data inside generated images.
Games
Browser games that run inside ComfyUI nodes — no installs, no external deps. Handy while waiting on long generations.
Controls (all games):
- Click the game canvas to capture keyboard input
- Click outside the node to release it
🐍 Snake Game
Classic Nokia-style snake. Arrow keys or WASD; Space to pause/restart.
🧱 Tetris
Arrow Left/Right move, Down soft drop, Up rotate, Space hard drop. Score, levels, next-piece preview.
🦖 Dino Game
Chrome offline runner. Space or Up to jump. Increasing difficulty and high score.
👾 Space Invaders
Arrow keys move, Space shoots. Wave-based arcade action.
🔫 DOOM
Full DOOM Shareware v1.9 in the browser via js-dos.
Automatic setup (recommended): add the node — it downloads ~2MB on first run from several mirrors, then launches.
Manual setup (if auto-download fails):
- Download DOOM Shareware v1.9 from Doomworld or Archive.org
- Place
DOOM.EXEandDOOM1.WADinComfyUI/custom_nodes/CrasHUtils/doom/ - Restart ComfyUI
Troubleshooting: click outside the node if keyboard sticks; check the browser console if download fails.
Issues & contributions
Found a bug or want a feature? Open an issue on GitHub.
Pull requests welcome — especially new games or utility nodes.
Credits
- Image Glitcher — Felix Turner
- LoRA loaders — UI inspired by rgthree's LoRA tooling
- DOOM — js-dos emulator; Shareware © id Software
License
MIT License — use, modify, and distribute freely.
DOOM Shareware is distributed under id Software's original shareware license.