Oxipng
Oxipng is an image optimization tool for PNG files. It can optimize PNGs losslessly to reduce file size by removing unnecessary metadata and optimizing compression settings.
png
compression
optimization
metadata-removal
Oxipng: Optimize PNG Files
Oxipng is an image optimization tool for PNG files. It can optimize PNGs losslessly to reduce file size by removing unnecessary metadata and optimizing compression settings.
What is Oxipng?
Oxipng is an open source command line utility for optimizing PNG image files. It was created to overcome limitations in the PNG compression utilities available at the time of its release in 2010.
Oxipng works by re-compressing PNG files to reduce file size as much as possible without losing image quality (lossless optimization). It goes beyond basic deflation and analyzes image data to select optimal compression parameters on a per-image basis.
Key features of Oxipng include:
- Lossless optimization - reduces file size without affecting pixel data or image quality
- True color, grayscale, and palette PNG support
- Preserves important PNG metadata like color profiles and timestamps
- Multi-threading for faster optimization on multi-core CPUs
- Available on Windows, Mac, and Linux
Overall, Oxipng is a very effective way to reduce PNG file sizes for faster web page loads and reduced web hosting bandwidth requirements. Its advanced optimization algorithms can frequently outperform basic tools like PNGOUT or Defluffer for lossless size reductions.
Oxipng Features
Features
- Lossless compression of PNG files
- Removes unnecessary metadata
- Optimizes compression settings
- Multithreaded for faster optimization
- Command line interface
Pricing
- Free
- Open Source
Pros
Greatly reduces PNG file sizes
Lossless optimization preserves image quality
Easy to automate and integrate into workflows
Actively maintained and updated
Cons
Command line only, no GUI
Slower than lossy PNG optimization
Limited to PNG files only
Official Links
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