diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -92,6 +92,7 @@ On Mac, right click open to get past the security warning.
 For flatpak, Docker, and AppImage versions, refer to the wiki: https://github.com/ciromattia/kcc/wiki/Installation
 
 ## FAQ
+- All options have additional information in tooltips if you hover over the option.
 - How to make AZW3 instead of MOBI?
   - The `.mobi` file generated by KCC is a dual filetype, it's both MOBI and AZW3. The file extension is `.mobi` for compatibility reasons.
 - [Windows 7 support](https://github.com/ciromattia/kcc/issues/678)