diff --git a/docs/custom-api.md b/docs/custom-api.md
index 99e3a5e..1930f40 100644
--- a/docs/custom-api.md
+++ b/docs/custom-api.md
@@ -389,6 +389,7 @@ The following helper functions provided by Glance are available:
 - `trimSuffix(suffix string, str string) string`: Trims the suffix from a string.
 - `trimSpace(str string) string`: Trims whitespace from a string on both ends.
 - `replaceAll(old string, new string, str string) string`: Replaces all occurrences of a string in a string.
+- `replaceMatches(pattern string, replacement string, str string) string`: Replaces all occurrences of a regular expression in a string.
 - `findMatch(pattern string, str string) string`: Finds the first match of a regular expression in a string.
 - `findSubmatch(pattern string, str string) string`: Finds the first submatch of a regular expression in a string.
 - `sortByString(key string, order string, arr []JSON): []JSON`: Sorts an array of JSON objects by a string key in either ascending or descending order.
diff --git a/internal/glance/widget-custom-api.go b/internal/glance/widget-custom-api.go
index c9db2df..5d82c5a 100644
--- a/internal/glance/widget-custom-api.go
+++ b/internal/glance/widget-custom-api.go
@@ -471,6 +471,13 @@ var customAPITemplateFuncs = func() template.FuncMap {
 		"replaceAll": func(old, new, s string) string {
 			return strings.ReplaceAll(s, old, new)
 		},
+		"replaceMatches": func(pattern, replacement, s string) string {
+			if s == "" {
+				return ""
+			}
+
+			return getCachedRegexp(pattern).ReplaceAllString(s, replacement)
+		},
 		"findMatch": func(pattern, s string) string {
 			if s == "" {
 				return ""