diff --git a/package.json b/package.json
index 64e3c6b..743e4e7 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,8 @@
   },
   "homepage": "https://github.com/lokenxo/ng2-fittext#readme",
   "dependencies": {
-    "@angular/core": "^4.0.1"
+    "@angular/core": "^4.0.1",
+    "rxjs": "^5.4.0"
   },
   "devDependencies": {
     "typescript": "~2.2.2"
diff --git a/src/ng2fittext.directive.ts b/src/ng2fittext.directive.ts
index 3f53ee2..46bfb81 100644
--- a/src/ng2fittext.directive.ts
+++ b/src/ng2fittext.directive.ts
@@ -8,15 +8,16 @@ export class Ng2FittextDirective implements AfterViewInit, OnInit {
   @Input('fittext') fittext: any;
   @Input('container') container: any;
   @Input('activateOnResize') activateOnResize: boolean;
+  @Input('activateOnInputEvents') activateOnInputEvents: boolean;
   private fontSize: number = 0;
   private speed: number = 1.05;
 
   constructor(public el: ElementRef, public renderer: Renderer) {
   }
-  
+
   setFontSize(fontSize) {
-      this.fontSize = fontSize;
-      return this.el.nativeElement.style.setProperty('font-size', (fontSize).toString()+'px');
+    this.fontSize = fontSize;
+    return this.el.nativeElement.style.setProperty('font-size', (fontSize).toString()+'px');
   }
 
   calculateFontSize(fontSize, speed){
@@ -38,6 +39,14 @@ export class Ng2FittextDirective implements AfterViewInit, OnInit {
     }
   }
 
+  @HostListener('input', ['$event'])
+  onInputEvents() {
+    if(this.activateOnInputEvents && this.fittext) {
+        this.setFontSize(this.container.clientHeight);
+        this.ngAfterViewInit();
+    }
+  }
+
   ngOnInit() {
     if (this.fittext) {
       this.setFontSize(this.container.clientWidth);