Portable Smalify

Portable Smalify is a lightweight application that you can use to reduce the size of JS, CSS and LESS files in just a couple of clicks. Although it's geared toward programmers and web designers, it doesn't have complex options, making it suitable for all user levels.

Prerequisites and interface

As long as you have .NET Framework installed, you don't need to set up anything else. This means that you can copy the downloaded files to a custom directory on the disk or to a USB flash drive, in order to easily run Portable Smalify on any PC. It doesn't change the Windows registry settings.
As far as the interface goes, the program adopts a simple window with a clear-cut structure, where you can drop a folder while navigating Explorer directories, in order to automatically process all containing files with the supported extensions. These can be filtered by type if you're not interesting in any formats.

Auto-optimize JS, CSS and LESS files

Worth noting is that selected directories are added to a watchlist by default, which means that the tool optimizes files as soon as they're created, moved or copied there. This option can be disabled, though.
Moreover, you can integrate Smalify into the right-click menu to run it with administrative rights. The original files are left untouched, as the application creates their optimized counterparts in the same folders, so you don't have to create backups before using this piece of software.

Evaluation and conclusion

It carried out tasks swiftly in our tests and delivered decent results concerning the new file size. No error dialogs popped up in our evaluation and it didn't freeze or crash.
To sum it up, Portable Smalify offers a simple and effective solution for reducing the size of JS, CSS and LESS files.