# Extensions > - `yes`: supported > - _blank_: not supported yet, or WIP > - `no` with issue link: confirmed to be unavailable due to issue > - `partial` with issue link: supported but not perfect due to issue ::: tip If an extension you need is missing, you can create a [Feature Request](https://github.com/crazywhalecc/static-php-cli/issues). Some extensions or libraries that the extension depends on will have some optional features. For example, the gd library optionally supports libwebp, freetype, etc. If you only use `bin/spc build gd --build-cli` they will not be included (static-php-cli defaults to the minimum dependency principle). For more information about optional libraries, see [Extensions, Library Dependency Map](./deps-map). For optional libraries, you can also select an extension from the [Command Generator](./cli-generator) and then select optional libraries. :::