diff --git a/docs/custom-api.md b/docs/custom-api.md
index 8e432c9..4e4ec03 100644
--- a/docs/custom-api.md
+++ b/docs/custom-api.md
@@ -345,6 +345,7 @@ The following helper functions provided by Glance are available:
 - `sortByInt(key string, order string, arr []JSON): []JSON`: Sorts an array of JSON objects by an integer key in either ascending or descending order.
 - `sortByFloat(key string, order string, arr []JSON): []JSON`: Sorts an array of JSON objects by a float key in either ascending or descending order.
 - `sortByTime(key string, layout string, order string, arr []JSON): []JSON`: Sorts an array of JSON objects by a time key in either ascending or descending order. The format must be provided in Go's [date format](https://pkg.go.dev/time#pkg-constants).
+- `concat(strings ...string) string`: Concatenates multiple strings together.
 
 The following helper functions provided by Go's `text/template` are available:
 
diff --git a/internal/glance/widget-custom-api.go b/internal/glance/widget-custom-api.go
index be83032..5d7654f 100644
--- a/internal/glance/widget-custom-api.go
+++ b/internal/glance/widget-custom-api.go
@@ -514,6 +514,9 @@ var customAPITemplateFuncs = func() template.FuncMap {
 
 			return results
 		},
+		"concat": func(items ...string) string {
+			return strings.Join(items, "")
+		},
 	}
 
 	for key, value := range globalTemplateFunctions {