📄️ HTTP Source
The HTTP source is the default source in PreviewProxy and is always enabled. It allows you to proxy and transform any publicly accessible image over HTTP or HTTPS.
📄️ S3 Source
The S3 source allows PreviewProxy to fetch images directly from an Amazon S3 bucket or any S3-compatible object storage (such as Cloudflare R2, RustFS, or Backblaze B2).
📄️ Local Filesystem
The local filesystem source allows PreviewProxy to serve and transform images stored on the same machine (or a mounted volume). This is useful in containerised deployments where images are available on a shared volume, or in development environments where you want to serve local files.
📄️ URL Aliases
URL aliases let you define short, memorable scheme names that map to full HTTP base URLs. Instead of embedding long CDN or storage URLs into every client request, you register an alias once in server configuration and use the short name in request paths.