Stirling Image
The Open-Source Image Processing Platform
---
Self-hosted image processing with 33+ tools in a single Docker container. Resize, compress, convert, watermark, remove backgrounds, run OCR, and more. Nothing leaves your server.
Inspired by [Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF), built for images.
## Quick start
```bash
docker run -d -p 1349:1349 -v ./data:/data ghcr.io/siddharthksah/stirling-image:latest
```
Open [http://localhost:1349](http://localhost:1349). Default login is `admin` / `admin`.
## What it does
- **33+ image tools** in one place — resize, crop, rotate, compress, convert, watermark, color adjustments, and the rest.
- **AI tools that run locally** — background removal (rembg), upscaling (Real-ESRGAN), OCR (PaddleOCR), face blurring (MediaPipe), object erasing (LaMa). No external API calls.
- **Your hardware, your data** — no telemetry, no tracking, no cloud. Files stay on your machine.
- **Batch processing** — drop up to 200 images, apply any tool, get a ZIP back. Configurable concurrency.
- **Pipelines** — chain tools into reusable workflows (resize, then compress, then convert to WebP, then strip metadata). Save them and rerun later.
- **REST API** — every tool is exposed at `/api/v1/tools/:toolId`. Swagger docs at `/api/docs`.
- **Persistent file storage** — save processed images server-side with version tracking. Pick up where you left off.
- **Teams and admin settings** — manage users, toggle tool visibility, configure cleanup, upload a custom logo.
- **Single container** — runs on Intel, AMD, and Apple Silicon (`linux/amd64` + `linux/arm64`).
## Tools
| Category | Tools |
|----------|-------|
| **Essentials** | Resize, Crop, Rotate & Flip, Convert, Compress |
| **Optimization** | Strip Metadata, Bulk Rename, Image to PDF, Favicon Generator |
| **Adjustments** | Brightness/Contrast, Saturation, Color Channels, Color Effects, Replace Color |
| **AI Tools** | Background Removal, Upscaling, Object Eraser, OCR, Face Blur, Smart Crop |
| **Watermark** | Text Watermark, Image Watermark, Text Overlay, Image Composition |
| **Utilities** | Image Info, Compare, Find Duplicates, Color Palette, QR Generator, Barcode Reader |
| **Layout** | Collage/Grid, Image Splitting, Border & Frame |
| **Format** | SVG to Raster, Image to SVG, GIF Tools |
| **Automation** | Pipeline Builder, Batch Processing |
## Supported formats
**In:** JPG, PNG, WebP, AVIF, TIFF, BMP, GIF (animated), SVG, HEIC/HEIF, JPEG XL, ICO, RAW (CR2, NEF, ARW, DNG)
**Out:** JPG, PNG, WebP, AVIF, TIFF, GIF, JPEG XL, SVG, ICO, PDF
## Configuration
| Variable | Default | Description |
|----------|---------|-------------|
| `PORT` | `1349` | Server port |
| `AUTH_ENABLED` | `true` | Require login (`admin` / `admin` by default) |
| `MAX_UPLOAD_SIZE_MB` | `100` | Max file upload size |
| `MAX_BATCH_SIZE` | `200` | Max files per batch |
| `CONCURRENT_JOBS` | `3` | Parallel processing limit |
| `FILE_MAX_AGE_HOURS` | `24` | Auto-delete temp files after this many hours |
| `FILES_STORAGE_PATH` | `./data/files` | Where persistent user files are stored |
| `STORAGE_MODE` | `local` | Storage backend (`local` or `s3`) |
See [`.env.example`](.env.example) for the full list.
## Docker Compose example
```yaml
services:
stirling-image:
image: ghcr.io/siddharthksah/stirling-image:latest
container_name: stirling-image
ports:
- "1349:1349"
volumes:
- stirling-data:/data
restart: unless-stopped
volumes:
stirling-data:
```
## Development
```bash
git clone https://github.com/siddharthksah/Stirling-Image.git
cd Stirling-Image
pnpm install
pnpm dev
# UI: http://localhost:1349
```
Requires Node.js 22+ and pnpm 9+.
## Tech stack
React 19 + Vite frontend, Fastify + Sharp backend, SQLite via Drizzle ORM, Python sidecar for AI/ML models. Monorepo with pnpm workspaces. Multi-arch Docker builds.
## Support this project
If you find this useful, consider supporting development:
## Contributing
Contributions welcome. Open an issue first so we can talk about what you have in mind.
## License
[MIT](LICENSE)