diff --git a/externs/olx.js b/externs/olx.js
index 5d9bd288f5..178ffc19f2 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -3104,6 +3104,13 @@ olx.interaction.PinchZoomOptions;
  */
 olx.interaction.PinchZoomOptions.prototype.duration;
 
+/**
+ * Zoom to the closest integer zoom level after the pinch gesture ends. Default is `false`.
+ * @type {boolean|undefined}
+ * @api
+ */
+olx.interaction.PinchZoomOptions.prototype.constrainResolution;
+
 
 /**
  * @typedef {{handleDownEvent: (function(ol.MapBrowserPointerEvent):boolean|undefined),
@@ -7613,7 +7620,7 @@ olx.view.FitOptions.prototype.maxZoom;
 
 
 /**
- * The duration of the animation in milliseconds. By default, there is no 
+ * The duration of the animation in milliseconds. By default, there is no
  * animations.
  * @type {number|undefined}
  * @api
diff --git a/src/ol/interaction/pinchzoom.js b/src/ol/interaction/pinchzoom.js
index ac0bc45f3a..412cc7ce12 100644
--- a/src/ol/interaction/pinchzoom.js
+++ b/src/ol/interaction/pinchzoom.js
@@ -27,6 +27,12 @@ ol.interaction.PinchZoom = function(opt_options) {
 
   var options = opt_options ? opt_options : {};
 
+  /**
+   * @private
+   * @type {boolean}
+   */
+  this.constrainResolution_ = options.constrainResolution || false;
+
   /**
    * @private
    * @type {ol.Coordinate}
@@ -111,13 +117,15 @@ ol.interaction.PinchZoom.handleUpEvent_ = function(mapBrowserEvent) {
     var map = mapBrowserEvent.map;
     var view = map.getView();
     view.setHint(ol.View.Hint.INTERACTING, -1);
-    var resolution = view.getResolution();
-    // Zoom to final resolution, with an animation, and provide a
-    // direction not to zoom out/in if user was pinching in/out.
-    // Direction is > 0 if pinching out, and < 0 if pinching in.
-    var direction = this.lastScaleDelta_ - 1;
-    ol.interaction.Interaction.zoom(map, view, resolution,
-        this.anchor_, this.duration_, direction);
+    if (this.constrainResolution_) {
+      var resolution = view.getResolution();
+      // Zoom to final resolution, with an animation, and provide a
+      // direction not to zoom out/in if user was pinching in/out.
+      // Direction is > 0 if pinching out, and < 0 if pinching in.
+      var direction = this.lastScaleDelta_ - 1;
+      ol.interaction.Interaction.zoom(map, view, resolution,
+          this.anchor_, this.duration_, direction);
+    }
     return false;
   } else {
     return true;