diff --git a/Caps.xcodeproj/project.pbxproj b/Caps.xcodeproj/project.pbxproj
index 972b495..938af63 100644
--- a/Caps.xcodeproj/project.pbxproj
+++ b/Caps.xcodeproj/project.pbxproj
@@ -48,6 +48,7 @@
 		E2EA00ED2841170100F7B269 /* UIImage+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2EA00EC2841170100F7B269 /* UIImage+Extensions.swift */; };
 		E2EA00EF28420AA000F7B269 /* Data+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2EA00EE28420AA000F7B269 /* Data+Extensions.swift */; };
 		E2EA00F328438E6B00F7B269 /* CapNameEntryView.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2EA00F228438E6B00F7B269 /* CapNameEntryView.swift */; };
+		E2ED709A2A73D86F00067808 /* String+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2ED70992A73D86F00067808 /* String+Extensions.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -92,6 +93,7 @@
 		E2EA00EC2841170100F7B269 /* UIImage+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UIImage+Extensions.swift"; sourceTree = "<group>"; };
 		E2EA00EE28420AA000F7B269 /* Data+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Data+Extensions.swift"; sourceTree = "<group>"; };
 		E2EA00F228438E6B00F7B269 /* CapNameEntryView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CapNameEntryView.swift; sourceTree = "<group>"; };
+		E2ED70992A73D86F00067808 /* String+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "String+Extensions.swift"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -173,6 +175,7 @@
 				E2EA00EE28420AA000F7B269 /* Data+Extensions.swift */,
 				E20D105128589AAC0019BD91 /* FileManager+Extensions.swift */,
 				E20D10552858CDFA0019BD91 /* View+Extensions.swift */,
+				E2ED70992A73D86F00067808 /* String+Extensions.swift */,
 			);
 			path = Extensions;
 			sourceTree = "<group>";
@@ -320,6 +323,7 @@
 				E25AAC92283D8808006E9E7F /* CapData.swift in Sources */,
 				E25AAC96283E14DF006E9E7F /* Database.swift in Sources */,
 				E25AAC8D283D86CF006E9E7F /* Logger.swift in Sources */,
+				E2ED709A2A73D86F00067808 /* String+Extensions.swift in Sources */,
 				E20D105028574E190019BD91 /* CapImage.swift in Sources */,
 				E2EA00ED2841170100F7B269 /* UIImage+Extensions.swift in Sources */,
 				E20D105228589AAC0019BD91 /* FileManager+Extensions.swift in Sources */,
diff --git a/Caps/ContentView.swift b/Caps/ContentView.swift
index 6cd759f..d4e3f3a 100644
--- a/Caps/ContentView.swift
+++ b/Caps/ContentView.swift
@@ -65,9 +65,7 @@ struct ContentView: View {
     private var selectedCapToShowImages: Cap?
 
     var filteredCaps: [Cap] {
-        let text = searchString
-            .trimmingCharacters(in: .whitespacesAndNewlines)
-            .lowercased()
+        let text = searchString.clean
         guard text != "" else {
             return Array(database.caps.values)
         }
diff --git a/Caps/Data/Cap.swift b/Caps/Data/Cap.swift
index cdc514a..a8aa6b3 100644
--- a/Caps/Data/Cap.swift
+++ b/Caps/Data/Cap.swift
@@ -143,15 +143,6 @@ extension Cap: Hashable {
     }
 }
 
-// MARK: String extension
-
-private extension String {
-
-    var clean: String {
-        return lowercased().replacingOccurrences(of: "[^a-z0-9 ]", with: "", options: .regularExpression)
-    }
-}
-
 // MARK: Int extension
 
 private extension Int {
diff --git a/Caps/Extensions/String+Extensions.swift b/Caps/Extensions/String+Extensions.swift
new file mode 100644
index 0000000..acc7bcd
--- /dev/null
+++ b/Caps/Extensions/String+Extensions.swift
@@ -0,0 +1,10 @@
+import Foundation
+
+extension String {
+
+    var clean: String {
+        lowercased()
+            .replacingOccurrences(of: "[^a-z0-9 ]", with: "", options: .regularExpression)
+            .trimmingCharacters(in: .whitespacesAndNewlines)
+    }
+}