jakubpawlowicz/clean-css

Features

• CSS Minification - Provides a high-performance CSS minifier that removes redundant code and whitespace to improve loading speeds.
• CSS Minifiers - Provides a specialized utility for reducing CSS file sizes through whitespace removal and redundant rule merging.
• Command Line Interfaces - Ships a command line interface for executing optimization and minification tasks without writing custom code.
• CSS Processors - Implements a system to parse and transform CSS stylesheets into a production-ready format using a plugin interface.
• Frontend Build Pipelines - Integrates into frontend build pipelines to automate the processing of CSS files for production environments.
• Browser Compatibility Targets - Defines target browser versions to automate compatibility adjustments during the minification process.
• CSS AST Parsing - Parses CSS source code into an abstract syntax tree to enable precise structural analysis and manipulation.
• Legacy Browser Support - Implements strategies to ensure CSS functionality and visual consistency across older web browser versions.
• Compatibility-Aware Optimization - Adjusts optimization rules based on target browser profiles to ensure styles remain functional in legacy environments.
• CSS Minification Tools - Provides a dedicated tool for reducing the size of stylesheets through compression and optimization rules.
• CSS Optimization Tools - Offers a high-performance CSS optimizer specifically built for the Node.js environment.
• CSS Structural Optimizations - Clean-CSS streamlines the final stylesheet by applying structural transformations and merging redundant properties.
• Multi-Pass Minification - Employs a multi-pass pipeline to sequentially minify, merge, and restructure CSS for maximum file size reduction.
• CSS Source Mapping - Generates source maps that link minified production stylesheets back to their original source files.
• Source Map Generators - Generates source maps that link minified production stylesheets back to their original source files for easier debugging.
• CSS Rule Preservation Markers - Uses specialized comment markers to shield specific blocks of CSS from being modified during optimization.
• CSS Value Optimizers - Simplifies property values and converts colors to their shortest valid representations to decrease data transfer.
• Import Path Resolution - Resolves and merges remote or local import statements into the main stylesheet to reduce network requests.
• Transformation Plugins - Provides a plugin interface that allows custom logic to intercept and transform the internal representation of styles.
• URL Relative Path Resolvers - Calculates and updates asset URLs by comparing the original source location to the final output destination.
• Stylesheet Restructuring - Reorganizes rulesets and media queries to eliminate duplicates and shrink the overall file size.
• Style Transformation Plugin Interfaces - Enables custom logic during the optimization process via a plugin interface to transform styles.
• Asset Path Resolvers - Maps and transforms relative links to static assets like images and fonts when moving stylesheets.
• Code Optimization - CSS optimization and minification tool.

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