This software compresses HTML by eliminating excess whitespace and compacting code, resulting in web pages that are 20% smaller and faster to load.

However, it's essential to note that the Compactor software is a pure HTML compression tool. It only serves the purpose of compacting your HTML and does not fluff it up again. To expand your HTML files again, it's recommended to use other tools such as SlickEdit beautify, DreamWeaver, or HTML Tidy. These tools make it easier to proofread and edit your code.
One remarkable feature of the Compactor software is that you can integrate it into your program as an option for stripping comments altogether, except for magic comments that you define as macros. It can also strip comment-style macros and comments, with the option of leaving Server-Side Includes (SSI) alone.
In summary, the Compactor software is a great tool for compressing HTML, reducing web page size and making them load faster. However, it's important to note that it's solely a compression tool and does not fluff the code up again. It's also flexible enough to be integrated into your program; it also has several options for commenting.
Version 3.9: now compacts new HTML5 tags.