diff --git a/vignettes/extra/chart-options.Rmd b/vignettes/extra/chart-options.Rmd
index ca32a65..e443e9f 100644
--- a/vignettes/extra/chart-options.Rmd
+++ b/vignettes/extra/chart-options.Rmd
@@ -1,8 +1,8 @@
 ---
-title: "Chart options"
+title: "Customize chart options"
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{chart-options}
+  %\VignetteIndexEntry{Customize chart options}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---
diff --git a/vignettes/extra/facets.Rmd b/vignettes/extra/facets.Rmd
index 8cca4da..8d237c3 100644
--- a/vignettes/extra/facets.Rmd
+++ b/vignettes/extra/facets.Rmd
@@ -1,8 +1,8 @@
 ---
-title: "Facets: grid of charts"
+title: "Create grid of charts"
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{facets}
+  %\VignetteIndexEntry{Create grid of charts}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---
diff --git a/vignettes/extra/shiny-integration.Rmd b/vignettes/extra/shiny-integration.Rmd
index 8316a2e..e85959b 100644
--- a/vignettes/extra/shiny-integration.Rmd
+++ b/vignettes/extra/shiny-integration.Rmd
@@ -1,8 +1,8 @@
 ---
-title: "Shiny integration"
+title: "Use in Shiny application"
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{shiny-integration}
+  %\VignetteIndexEntry{Use in Shiny application}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---
diff --git a/vignettes/extra/spark-box.Rmd b/vignettes/extra/spark-box.Rmd
index d00303f..5e1314c 100644
--- a/vignettes/extra/spark-box.Rmd
+++ b/vignettes/extra/spark-box.Rmd
@@ -1,8 +1,8 @@
 ---
-title: "Spark boxes"
+title: "Create boxes with sparklines"
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{spark-box}
+  %\VignetteIndexEntry{Create boxes with sparklines}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---
diff --git a/vignettes/extra/sync-charts.Rmd b/vignettes/extra/sync-charts.Rmd
index 89e571a..553dc6d 100644
--- a/vignettes/extra/sync-charts.Rmd
+++ b/vignettes/extra/sync-charts.Rmd
@@ -1,8 +1,8 @@
 ---
-title: "Syncing charts"
+title: "Synchronize charts with each other"
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{syncing-charts}
+  %\VignetteIndexEntry{Synchronize charts with each other}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---