nano-banana-pro

# Nano Banana Pro Image Generation & Editing Generate new images or edit existing ones using Google's Nano Banana Pro API (Gemini 3 Pro Image). ## Usage Run the script using absolute path (do NOT cd to skill directory first): **Generate new image:** ```bash uv run {baseDir}/scripts/generate_image.py --prompt "your image description" --filename "output-name.png" [--resolution 1K|2K|4K] [--api-key KEY] ``` **Edit existing image:** ```bash uv run {baseDir}/scripts/generate_image.py --prompt "editing instructions" --filename "output-name.png" --input-image "path/to/input.png" [--resolution 1K|2K|4K] [--api-key KEY] ``` **Important:** Always run from the user's current working directory so images are saved where the user is working. ## Default Workflow (draft > iterate > final) - Draft (1K): quick feedback loop - Iterate: adjust prompt in small diffs; keep filename new per run - Final (4K): only when prompt is locked ## Resolution Options - **1K** (default) - ~1024px resolution - **2K** - ~2048px resolution - **4K** - ~4096px resolution ## API Key 1. `--api-key` argument 2. `GEMINI_API_KEY` environment variable ## Image Editing Use `--input-image` parameter with the path to the image. The prompt should contain editing instructions. ## Prompt Handling **For generation:** Pass user's image description as-is to `--prompt`. **For editing:** Pass editing instructions in `--prompt`. ## Output - Saves PNG to current directory - Script outputs the full path to the generated image - **Do not read the image back** - just inform the user of the saved path