Image Gen
Generate images through scripts/imagine.js, a zero-dependency Node.js CLI (Node 18+, no npm install) backed by multiple providers. It saves images to disk and prints the absolute paths.
Quick start
# Generate an image
node scripts/imagine.js "a retro synthwave poster, neon grid, 80s style" -o poster.png
# Edit an existing image
node scripts/imagine.js "add a red balloon in the sky" -e photo.png -o edited.png
# Multi-step session: keep context across calls (design first, then its three views)
node scripts/imagine.js "a cute robot mascot, front view, flat vector style" --session mascot -o design.png
node scripts/imagine.js "draw its three views (front, side, back) from the same design" --session mascot -o views.png
# Clean up the session cache when the workflow is done
node scripts/imagine.js --clear mascot
Model selection
Priority for general images: GPT Image 2 (gpt-image-2) → Nano Banana (gemini-2.5-flash-image) → SiliconFlow Qwen-Image (Qwen/Qwen-Image) → OpenAI GPT Image (gpt-image-1). When a provider has no API key, fall back to the next configured one.
| Asset | Recommended models (priority order) |
|---|---|
| Images / posters | gpt-image-2 → gemini-2.5-flash-image → Qwen/Qwen-Image → gpt-image-1 |
| Stickers / icons / logos | Ideogram 3.0 (transparent) → gpt-image-1.5 / gpt-image-2 with --background transparent -f png → FLUX.2 pro |
| Seamless textures | Z-Image Turbo Tiling (fal.ai) → FLUX.2 pro → any strong model with a strict tiling prompt |
Specialist models outside the script's providers (Ideogram, fal tiling) are called through their own APIs; imagine.js covers OpenAI, SiliconFlow, Gemini, and OpenAI-compatible relays.
Key workflows
- Transparent assets:
--background transparent -f png(neverjpeg); phrase stickers as "die-cut sticker, thick white border, bold clean shapes". - Seamless textures: include "seamless, tileable, top-down, flat uniform lighting, no shadows, edges wrap perfectly".
- Text in images: GPT Image 2 is best for CJK/multilingual text; keep text short and quoted.
- Aspect ratio: Gemini via
--aspect 16:9; OpenAI/SiliconFlow via-s WxH(Qwen native sizes like1328x1328,1664x928). - Iterate cheaply: draft with
Qwen/Qwen-Image/ Nano Banana or-q low, render finals ongpt-image-2with-q high;--seedfor reproducible output.
References — load on demand
| When | Reference |
|---|---|
| Full CLI arguments, session details, exit codes | core-usage |
| First run with no API key configured (env keys, AGENTS.md merge) | core-setup |
| Debugging the pipeline or editing the scripts | core-script |