diff --git a/packages/fcl-bundle/README.md b/packages/fcl-bundle/README.md
index 9aa5a04b4..a582e0bcc 100644
--- a/packages/fcl-bundle/README.md
+++ b/packages/fcl-bundle/README.md
@@ -97,4 +97,8 @@ A source configuration can be provided in one of three ways:
 ## Features
  - Replace `PACKAGE_CURRENT_VERSION` in bundled code with the current `version` of the package being bundled from `package.json`
  - Bundles dependencies with UMD builds for use in browser
- - Transpiles output bundles using `@babel/preset-env` and [babel rollup plugin](https://www.npmjs.com/package/@rollup/plugin-babel)
\ No newline at end of file
+ - Transpiles output bundles using `@babel/preset-env` and [babel rollup plugin](https://www.npmjs.com/package/@rollup/plugin-babel)
+ - PostCSS support for CSS bundling, must include a `postcss.config.js` in the root of the package
+ - Images are bundled with the `@rollup/plugin-image` plugin as base64 strings
+ - Minification of bundles with `terser` if output paths end in ".min.js"
+ - TypeScript support if entry point is a `.ts` file
\ No newline at end of file