This starts both the API server and the React frontend. The app opens at `http://localhost:5173` by default during development.
## What you can do
Once logged in, the sidebar lists every available tool. Pick one, upload an image, adjust the settings, and download the result.
A few things to try first:
- **Resize** an image to specific dimensions or a percentage
- **Remove a background** using the AI-powered background removal tool
- **Compress** a photo to reduce file size before uploading it somewhere
- **Convert** between formats (JPEG, PNG, WebP, AVIF, TIFF)
- **Batch process** a folder of images through any tool
Every tool in the UI is also available through the [REST API](../api/rest), so you can script your workflows or integrate Stirling Image into other systems.