> For the complete documentation index, see [llms.txt](https://kvision.gitbook.io/kvision-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kvision.gitbook.io/kvision-guide/3.-optional-ui-functionality-via-modules.md).

# 3. Optional UI Functionality (via modules)

KVision is [modularized](/kvision-guide/1.-getting-started-1/modules.md), to let you optimize your distribution size by picking and choosing which components you use.

Some of the components and functionality provided by optional modules are described in this chapter.