Prepros

Prepros is a web development tool that automates preprocessing tasks. It compiles languages like Sass, Less and CoffeeScript, optimizes resources and serves local projects with live browser reload.

★★★★★

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• CSS preprocessor compilation. Prepros transforms Sass, SCSS, Less and Stylus code into standard CSS ready for browsers. Compilation is automatic upon saving changes in source files. Configuration of output paths and source maps for debugging.
• HTML preprocessor compilation. Converts Pug (Jade), Haml and Markdown files into functional HTML. Allows the use of variables, mixins and logical structures in templates. Support for includes and template inheritance.
• JavaScript preprocessor compilation. Processes CoffeeScript, TypeScript and Babel to generate browser-compatible JavaScript. Configuration of transpilation options and compatibility levels.
• Integrated local HTTP server. Serves static files from the project directory with SSL support. Configuration of custom ports, virtual routing and HTTP headers. Access from devices on the same network.
• Automatic browser reload. Monitors changes in project files and automatically reloads connected browsers. Supports CSS reload without refreshing the entire page. Configuration of file patterns for monitoring.
• Cross-device synchronization. Replicates interactions like scrolling, clicks and form inputs across multiple browsers. Facilitates testing on multiple devices simultaneously. Connection via QR code or URL.
• Minification and concatenation. Reduces CSS and JavaScript file size by removing whitespace and obfuscation. Combining multiple files into one to decrease HTTP requests. Compression level options.
• Image optimization. Compresses PNG, JPEG, GIF and SVG files without visible quality loss. File size reduction to improve loading times. Batch processing of images.
• Integration with version control systems. Configuration to exclude generated files (like compiled CSS) from Git, SVN or Mercurial repositories. Management of environment-specific configuration files.
• FTP/SFTP deployment. Automatic publishing of files to remote servers via FTP or SFTP. One-way or two-way synchronization. Configuration of multiple deployment environments.
• npm dependency management. Graphical interface for package management from the npm registry. Installation, update and removal of project dependencies. Execution of scripts defined in package.json.
• Custom processing with scripts. Execution of custom commands before or after file compilation. Automation of workflow-specific tasks. Integration with external tools.
• Environment variables and modes. Configuration of specific values for development, testing and production. Variable substitution in files during compilation. Management of separate configurations.
• Error monitoring and logging. Log panel displaying details of compilation processes and errors. Real-time failure notifications. Project activity history.
• Multiple project management interface. Centralized administration of multiple web projects from a single application. Quick switching between active projects. Independent settings per project.

The development of Prepros began in 2013 as a solution to simplify frontend development workflows. The tool was created by Subash Pathak, a developer specializing in web construction tools. The application is built primarily with web technologies: HTML, CSS and JavaScript, using the Electron framework for the cross-platform desktop interface. The first public version was released in 2014, focused on CSS preprocessor compilation with live reload. Over the years, features like image optimization, FTP deployment and npm package management have been added.

Alternatives to Prepros:

Rapid CSS Editor

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Price: $49,95   Size: 101.15 MB   Version: 2025 18.5.0.273   OS: Windows