Skip to content
Switch branches/tags
Go to file

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time

Mini Web Compiler

Compiles JavaScript code and SCSS stylesheets for the web, in a simple and clean GUI for Windows.

This application manages project files stored in JSON format. Each project you manage with Mini Web Compiler needs a separate miniwebcompiler.json file in its root directory. It specifies the project’s name, a few options and most importantly the source files to compile. You can create or add such project files in the Mini Web Compiler application and they are active until you remove them. Once the tool detects one of these files, or the files they reference, changed, it starts compiling the file according to its type and the project options.

The following file types are supported:

  • CSS: Minify
  • JavaScript: Bundle, transpile to ECMAScript 5 (for Internet Explorer), minify
  • SCSS: Compile to CSS, minify

Most of the actual processing and compilation is done by widely recognised and established tools. Most of them are made available as NPM packages that run on Node.js. Others need to be compiled from source code to a native binary. Some of the tools were patched to ensure proper handling of source maps (which are fully maintained along all the way) and important source comments.

These are the tools that do the work:

  • Babel: Transpile modern JavaScript to ECMAScript 5
  • CSSO: Minify CSS
  • rollup.js: Bundle JavaScript modules
  • SassC: Compile SASS and SCSS to CSS
  • UglifyJS: Minify JavaScript

All these tools are included in the setup package. The actual versions can be seen in the application’s About dialog.

JavaScript configuration

JavaScript files are run through rollup to bundle them into a single file, if any imports of other files are detected in the source file. The bundled code is wrapped into an immediately invoked function expression (IIFE). The parameters of that function and the arguments when calling it can be specified with comment lines like /* iife-params($) */ and /* iife-args(jQuery) */ near the top of the file. The code between the parentheses is inserted into the generated file.

JavaScript files are transpiled to ECMAScript 5 if they contain the comment line /* ecmascript */ near the top of the file.

System requirements

  • Windows 7, 8, 10 (64-bit)
  • .NET Framework 4.6.2 or later (comes with Windows Update)
  • No Node.js (included in the setup package)
  • No other tools (included in the setup package)

Build prerequisites

These steps must be taken to use the application from source code and build the setup package. None of this applies when installing Mini Web Compiler from the setup package.


MIT license

See LICENSE-3RD-PARTY.txt for licenses of third-party tools that are included in the setup package.


Compiles JavaScript code and SCSS stylesheets for the web, in a simple and clean GUI for Windows.




No packages published