Generate AI Images Privately - No Cloud, No Tracking
Cloud AI image generators log your prompts, store your images, and feed both back into training data. You don't have to accept that. Free, open-source tools run the same AI models on your own PC - fully offline, with nothing uploaded anywhere.
The Short Answer
Run Stable Diffusion or FLUX on your own computer using a free tool like Fooocus or ComfyUI. After the initial model download (~8 GB), everything runs offline - zero internet required. Your prompts and generated images never leave your machine. No accounts, no cloud uploads, no tracking.
Why Cloud Generators Collect Your Data
Midjourney scores 38/100 on privacy (Grade D from Privacy Watchdog). Your prompts and images are public by default and used for model training - with no opt-out. "Stealth Mode" costs $60+/month on Pro or Mega plans, and it still doesn't prevent Discord from retaining your data.
This isn't just a Midjourney problem. A Harmonic Security study found nearly 1 in 10 enterprise AI prompts disclose potentially sensitive data. Free-tier cloud services frequently train on user input. In February 2026, 61 data protection authorities worldwide published a joint statement demanding stronger privacy safeguards for AI image generation.
The fix: run the AI on your own hardware. No internet connection needed during generation. No data transmitted. No terms of service to worry about.
Your Options
Option 1 - Fooocus (Recommended)
Type a prompt, get an image. Zero config.
- Setup time: 10-20 minutes
- Difficulty: beginner
- Cost: free
- Privacy: complete - fully offline after first download
Fooocus works like Midjourney but runs entirely on your PC. Minimum hardware: 4 GB VRAM (an RTX 2060 or equivalent) and 8 GB system RAM. AMD GPUs work via DirectML on Windows or ROCm on Linux. The tradeoff: no FLUX model support - SDXL only.
Option 2 - ComfyUI (Power users)
Full pipeline control with node-based workflows.
- Setup time: 20-40 minutes
- Difficulty: intermediate
- Cost: free
- Privacy: complete - fully offline
ComfyUI (109k GitHub stars) runs both Stable Diffusion and FLUX models. FLUX works at 6-8 GB VRAM with GGUF quantization. The node-based interface gives you control over every generation step, but plan for a few hours of tutorials before you're productive.
Option 3 - InvokeAI (Professional workflows)
Unified canvas for inpainting, outpainting, and structured generation.
- Setup time: 20-30 minutes
- Difficulty: intermediate
- Cost: free
- Privacy: complete - fully offline
InvokeAI supports SD 1.5, SDXL, and FLUX. Its unified canvas is the best option for inpainting and outpainting work. SD 1.5 runs on 4 GB VRAM; SDXL needs 8 GB+. Smaller community (27k GitHub stars) means fewer tutorials than ComfyUI.
Option 4 - DiffusionBee (macOS only)
One-click install, no terminal.
- Setup time: 5-10 minutes
- Difficulty: beginner
- Cost: free
- Privacy: complete - fully offline
Download the .dmg, launch, generate. Optimized for Apple Silicon (M1-M4). The catch: macOS only, no FLUX support, and a smaller model ecosystem than ComfyUI or Fooocus. Or use LocalForge AI for a pre-configured setup with zero command-line work.
Quick Comparison
| Tool | Setup | Difficulty | FLUX | Min VRAM | Platform |
|---|---|---|---|---|---|
| Fooocus | 10-20 min | Beginner | No | 4 GB | Win / Linux |
| ComfyUI | 20-40 min | Intermediate | Yes | 6 GB (GGUF) | Win / Linux / Mac |
| InvokeAI | 20-30 min | Intermediate | Yes | 4 GB (SD 1.5) | Win / Linux / Mac |
| DiffusionBee | 5-10 min | Beginner | No | - | macOS only |
What to Do Next
- Want the easiest start? Download Fooocus and generate your first image in under 20 minutes.
- Need FLUX models? Set up ComfyUI - our ComfyUI setup guide walks through every step.
- Comparing cloud vs local? Read Midjourney vs Stable Diffusion for a full breakdown.
- Don't want to pick? Install StabilityMatrix - it manages Fooocus, ComfyUI, and InvokeAI from one app.