When comparing Hologram vs PostCSS plugin, the Slant community recommends PostCSS plugin for most people. In the question“What are the best tools for building and generating css living styleguides?” PostCSS plugin is ranked 3rd while Hologram is ranked 4th. The most important reason people chose PostCSS plugin is:
There are some [existing themes](https://www.npmjs.com/search?q=psg-theme) available (such as material design). Or you can use the [PSG-theme generator](https://github.com/sotayamashita/generator-psg-theme).
Ranked in these QuestionsQuestion Ranking
Pro Very customizable
Hologram has a variety of plugins and extensions to choose from, and the ability to create custom renderers.
Pro Supports variety of file types
Pro PostCSS workflow
Since it is a PostCSS plugin, it's very fast to set up for those already using PostCSS and integrates perfectly with the PostCSS workflow.
Pro Supports Markdown comments in CSS
CSS comments are parsed through markdown and appear in the generated HTML file.
Con Requires Ruby
Con Poor error reporting
Currently Hologram has limited error reporting, sometime giving unhelpful messages or failing silently.
Con Requires PostCSS
It's a PostCSS plugin, so it requires that you also set up PostCSS and Node in your project.