Flyimg

Flyimg is a Dockerized image transformation service that fetches images from local or remote sources, applies resizing and cropping operations, converts to modern formats, and serves optimized outputs. It is designed to provide a Cloudinary-like workflow using URL-based transformation parameters and built-in caching.

Key Features

• URL-based transformations (resize, crop, quality/compression and output format options)
• Automatic format negotiation via the client Accept header (for example AVIF/WebP)
• Output support for AVIF, WebP, MozJPEG, PNG, GIF, and optional JPEG XL via ImageMagick
• Fetches source images from external URLs or local paths
• Caching of transformed results for faster repeat requests
• Containerized deployment with Nginx and PHP-FPM

Use Cases

• Image optimization layer for websites, CMSs, and e-commerce catalogs
• Replacing or complementing third-party image CDNs with a self-managed service
• Generating responsive image variants and modern formats for performance

Limitations and Considerations

• Performance and output quality depend on ImageMagick and selected encoders available in the container
• Remote fetching requires careful access controls to avoid misuse (for example, unwanted internal network access)

Flyimg fits teams that want a simple, URL-driven image pipeline with modern formats and caching, while keeping deployment and operations straightforward through Docker. It is especially useful when you need consistent image transformations across multiple applications and environments.