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# ─────────────────────────────────────────────────────────────
# Image Generation Configuration / 图片生成配置
# ─────────────────────────────────────────────────────────────
# This file is an optional fallback config source for image_gen.py.
# Current process environment variables take precedence over this file.
# 当前文件是 image_gen.py 的可选 fallback 配置来源。
# 当前进程环境变量优先于这个文件。
#
# Resolution order (only the FIRST existing file is read; keys are NOT merged across files):
# 1. ./.env in your current working directory
# 2. <repo-root>/.env (when running from a clone)
# 3. ~/.ppt-master/.env (user-level config)
# 查找顺序（只读第一个存在的文件，多个 .env 之间不合并）：
# 1. 当前工作目录下的 ./.env
# 2. 仓库根目录下的 .env（仅在 clone 模式下）
# 3. ~/.ppt-master/.env（用户级配置）
# Active backend (required) / 当前启用后端（必需）
# Recommended core backends: openai / gemini / qwen / zhipu / volcengine
# 推荐核心后端：openai / gemini / qwen / zhipu / volcengine
# IMAGE_BACKEND=openai
# You may also provide the same variables directly via the current process environment.
# 也可以不写 .env，而是直接通过当前运行进程的环境变量提供同样的配置。
# IMPORTANT:
# - IMAGE_API_KEY / IMAGE_MODEL / IMAGE_BASE_URL are no longer supported.
# - Use provider-specific keys only.
# 重要：
# - 不再支持 IMAGE_API_KEY / IMAGE_MODEL / IMAGE_BASE_URL。
# - 请只使用各提供商自己的变量。
# ─────────────────────────────────────────────────────────────
# Example: OpenAI / OpenAI 示例 (recommended / 推荐)
# ─────────────────────────────────────────────────────────────
# IMAGE_BACKEND=openai
# OPENAI_API_KEY=sk-xxx
# OPENAI_MODEL=gpt-image-2
# OPENAI_BASE_URL=http://127.0.0.1:3000/v1
# ─────────────────────────────────────────────────────────────
# Example: Gemini / Gemini 示例
# ─────────────────────────────────────────────────────────────
# IMAGE_BACKEND=gemini
# GEMINI_API_KEY=your-gemini-api-key
# GEMINI_MODEL=gemini-3.1-flash-image-preview
# GEMINI_BASE_URL=https://your-proxy-url.com
# ─────────────────────────────────────────────────────────────
# Example: MiniMax / MiniMax 示例
# ─────────────────────────────────────────────────────────────
# IMAGE_BACKEND=minimax
# MINIMAX_API_KEY=your-minimax-key
# MINIMAX_MODEL=image-01
# MINIMAX_BASE_URL=https://api.minimax.io/v1/image_generation # Override for overseas users / 海外用户覆盖
# ─────────────────────────────────────────────────────────────
# Example: Qwen / 通义生图示例
# ─────────────────────────────────────────────────────────────
# IMAGE_BACKEND=qwen
# QWEN_API_KEY=your-dashscope-key
# QWEN_MODEL=qwen-image-2.0-pro
# QWEN_BASE_URL=https://dashscope.aliyuncs.com/api/v1/services/aigc/text2image/image-synthesis
# ─────────────────────────────────────────────────────────────
# Example: Zhipu / 智谱生图示例
# ─────────────────────────────────────────────────────────────
# IMAGE_BACKEND=zhipu
# ZHIPU_API_KEY=your-zhipu-key
# ZHIPU_MODEL=glm-image
# ZHIPU_BASE_URL=https://open.bigmodel.cn/api/paas/v4/images/generations
# ─────────────────────────────────────────────────────────────
# Example: Volcengine / 火山引擎示例
# ─────────────────────────────────────────────────────────────
# IMAGE_BACKEND=volcengine
# VOLCENGINE_API_KEY=your-volcengine-key
# VOLCENGINE_MODEL=doubao-seedream-4-5-251128
# VOLCENGINE_BASE_URL=https://operator.las.cn-beijing.volces.com/api/v1/images/generations
# ─────────────────────────────────────────────────────────────
# Extended / Experimental backends
# 扩展 / 实验后端
# ─────────────────────────────────────────────────────────────
# STABILITY_API_KEY=your-stability-key
# STABILITY_MODEL=stable-image-core
# STABILITY_BASE_URL=https://api.stability.ai
#
# BFL_API_KEY=your-bfl-key
# BFL_MODEL=flux-pro-1.1-ultra
# BFL_BASE_URL=https://api.bfl.ai
#
# IDEOGRAM_API_KEY=your-ideogram-key
# IDEOGRAM_MODEL=ideogram-v3
# IDEOGRAM_BASE_URL=https://api.ideogram.ai
#
# MINIMAX_API_KEY=your-minimax-key
# MINIMAX_MODEL=image-01
# MINIMAX_BASE_URL=https://api.minimax.io/v1/image_generation # Override for overseas users / 海外用户覆盖
#
# SILICONFLOW_API_KEY=your-siliconflow-key
# SILICONFLOW_MODEL=Qwen/Qwen-Image
# SILICONFLOW_BASE_URL=https://api.siliconflow.cn/v1/images/generations
#
# FAL_KEY=your-fal-key
# FAL_MODEL=fal-ai/imagen3/fast
# FAL_BASE_URL=https://fal.run
#
# REPLICATE_API_TOKEN=r8_xxx
# REPLICATE_MODEL=black-forest-labs/flux-1.1-pro
# REPLICATE_BASE_URL=https://api.replicate.com/v1/predictions
#
# OPENROUTER_API_KEY=sk-or-v1-xxx
# OPENROUTER_MODEL=google/gemini-3.1-flash-image-preview
# OPENROUTER_BASE_URL=https://openrouter.ai/api/v1
# ─────────────────────────────────────────────────────────────
# Multi-provider example / 多提供商共��示例
# ─────────────────────────────────────────────────────────────
# IMAGE_BACKEND=openai
# OPENAI_API_KEY=sk-xxx
# OPENAI_MODEL=gpt-image-2
# GEMINI_API_KEY=your-gemini-api-key
# GEMINI_MODEL=gemini-3.1-flash-image-preview
#
# Switch providers by changing IMAGE_BACKEND only.
# 切换提供商时，只改 IMAGE_BACKEND 即可。
# ─────────────────────────────────────────────────────────────
# Web image search (image_search.py) / 网络图片搜索
# ─────────────────────────────────────────────────────────────
# Used by scripts/image_search.py — separate from IMAGE_BACKEND above.
# image_search.py 用，与上面的 IMAGE_BACKEND 互不影响。
#
# Openverse and Wikimedia work with no key, but image quality can be uneven.
# For polished stock-style PPT images, configure Pexels and/or Pixabay.
# Openverse 和 Wikimedia 无需 Key，但图片质量不稳定。
# 如需更稳定的商业图库风格 PPT 配图，建议配置 Pexels 和/或 Pixabay。
#
# PEXELS_API_KEY=your-pexels-key # signup: https://www.pexels.com/api/
# PIXABAY_API_KEY=your-pixabay-key # signup: https://pixabay.com/api/docs/