Photo Metadata

slimg – fast image optimization tool

slimg is a fast image optimization tool. It can convert, compress, resize, crop, and extend images using modern codecs.

The software is available as a command-line tool and desktop application.

This is free and open source software.

Key Features

  • Convert images between JPEG, PNG, WebP, AVIF, QOI, and JPEG XL formats.
  • Optimize images by re-encoding them with configurable quality settings.
  • Resize images by width or height.
  • Crop images using coordinates or a specified aspect ratio.
  • Extend images to a target aspect ratio with padding.
  • Transparent backgrounds supported when extending compatible images.
  • Batch processing of files and directories.
  • Recursive directory processing.
  • Parallel processing with configurable worker jobs.
  • MozJPEG encoding for JPEG compression.
  • OxiPNG optimization with Zopfli compression.
  • WebP, AVIF, QOI, and JPEG XL encoding and decoding.
  • Cross-platform desktop GUI built with Tauri and React.
  • Drag-and-drop file and folder input.
  • Before and after image comparison preview.
  • Real-time progress for batch processing.
  • Available as the slimg-core Rust library.
  • Python and Kotlin/JVM language bindings.

Website: github.com/clroot/slimg
Support:
Developer: clroot
License: MIT License

slimg commands

slimg is written in Rust. Learn Rust with our recommended free books and free tutorials.


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