imgproxy vs MozJPEG

imgproxy is a self-hosted HTTP server that transforms images on demand using a source URL and processing options. It can resize, crop, trim, rotate, pad, watermark, apply filters and color adjustments, and chain processing steps. Sources include HTTP(S), local files, Amazon S3-compatible storage, Google Cloud Storage, Azure Blob Storage, and OpenStack Swift. Supported formats include JPEG, PNG, WebP, AVIF, JPEG XL, GIF, SVG, ICO, HEIC, BMP, TIFF, and animated GIF and WebP. Optimization can remove metadata and ICC profiles, quantize PNGs, and serve WebP, AVIF, or JPEG XL when a browser supports the format. imgproxy can run in Docker, Kubernetes with Helm, cloud environments, or on a local machine. Security options include signed URLs, authorization headers, source and file-size limits, dimension checks, URL expiration, and SVG sanitization. Pro adds video, PDF, and Photoshop previews, advanced compression and watermarking, object detection and cropping, automatic format selection, and priority support. The open-source version uses the MIT license. A free plan and 14-day trial are listed; Pro starts at $49 a month.

MozJPEG is a free, open-source library project that improves JPEG compression efficiency to produce smaller files and higher visual quality. It is intended for graphics programs and image-processing tools, and programs using the libjpeg API can integrate it without MozJPEG-specific integration code. It is compatible with the JPEG standard and the vast majority of deployed JPEG decoders. When converting other formats to JPEG, it uses trellis quantization to target the quality-to-file-size ratio. Its progressive encoding with jpegrescan optimization can losslessly reduce the size of a JPEG when used with jpegtran. The project’s improvements can be disabled at runtime, returning it to libjpeg-turbo behavior. The repository includes a demo cjpeg command-line tool, which is not intended for serious use. Build instructions cover Unix-like systems, macOS, Linux, and Windows with Visual C++ or MinGW. The GitHub repository identifies version 4.1.1 on its latest release page. MozJPEG points users to libjpeg-turbo documentation for additional build help; its repository does not state security certifications or compliance claims.