diff --git a/make.js b/make.js
index 45cc6aee9..7597fb28c 100644
--- a/make.js
+++ b/make.js
@@ -27,7 +27,6 @@ try {
 }
 
 var builder = require('./external/builder/builder.js');
-var path = require('path');
 var fs = require('fs');
 
 var CONFIG_FILE = 'pdfjs.config';
diff --git a/src/core/chunked_stream.js b/src/core/chunked_stream.js
index 58716e7e5..f32a16c75 100644
--- a/src/core/chunked_stream.js
+++ b/src/core/chunked_stream.js
@@ -12,7 +12,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* globals NetworkManager */
 
 'use strict';
 
diff --git a/src/display/text_layer.js b/src/display/text_layer.js
index a266d5632..72e31d69f 100644
--- a/src/display/text_layer.js
+++ b/src/display/text_layer.js
@@ -31,7 +31,6 @@ var Util = sharedUtil.Util;
 var createPromiseCapability = sharedUtil.createPromiseCapability;
 var CustomStyle = displayDOMUtils.CustomStyle;
 var getDefaultSetting = displayDOMUtils.getDefaultSetting;
-var PageViewport = sharedUtil.PageViewport;
 
 /**
  * Text layer render parameters.
diff --git a/test/unit/api_spec.js b/test/unit/api_spec.js
index 8817ffd50..66b6f2ede 100644
--- a/test/unit/api_spec.js
+++ b/test/unit/api_spec.js
@@ -1,7 +1,7 @@
 /* globals PDFJS, expect, it, describe, Promise, beforeAll,
            InvalidPDFException, MissingPDFException, StreamType, FontType,
            PDFDocumentProxy, PasswordException, PasswordResponses, afterAll,
-           PDFPageProxy, createPromiseCapability, beforeEach, afterEach */
+           PDFPageProxy, createPromiseCapability, afterEach */
 
 'use strict';
 
diff --git a/web/app.js b/web/app.js
index 7bce5c4ce..4f52d2b5c 100644
--- a/web/app.js
+++ b/web/app.js
@@ -857,7 +857,6 @@ var PDFViewerApplication = {
     pdfViewer.setDocument(pdfDocument);
     var firstPagePromise = pdfViewer.firstPagePromise;
     var pagesPromise = pdfViewer.pagesPromise;
-    var onePageRendered = pdfViewer.onePageRendered;
 
     this.pageRotation = 0;
 
diff --git a/web/pdf_find_controller.js b/web/pdf_find_controller.js
index b085a6bc5..2da33b96a 100644
--- a/web/pdf_find_controller.js
+++ b/web/pdf_find_controller.js
@@ -24,7 +24,7 @@
   } else {
     factory((root.pdfjsWebPDFFindController = {}), root.pdfjsWebUIUtils);
   }
-}(this, function (exports, uiUtils, firefoxCom) {
+}(this, function (exports, uiUtils) {
 
 var scrollIntoView = uiUtils.scrollIntoView;
 
@@ -322,10 +322,9 @@ var PDFFindController = (function PDFFindControllerClosure() {
      * @param {number} index - match index.
      * @param {Array} elements - text layer div elements array.
      * @param {number} beginIdx - start index of the div array for the match.
-     * @param {number} endIdx - end index of the div array for the match.
      */
     updateMatchPosition: function PDFFindController_updateMatchPosition(
-        pageIndex, index, elements, beginIdx, endIdx) {
+        pageIndex, index, elements, beginIdx) {
       if (this.selected.matchIdx === index &&
           this.selected.pageIdx === pageIndex) {
         var spot = {
diff --git a/web/pdf_page_view.js b/web/pdf_page_view.js
index 2a29f21ed..8386c273a 100644
--- a/web/pdf_page_view.js
+++ b/web/pdf_page_view.js
@@ -187,7 +187,6 @@ var PDFPageView = (function PDFPageViewClosure() {
       var isScalingRestricted = false;
       if (this.canvas && pdfjsLib.PDFJS.maxCanvasPixels > 0) {
         var outputScale = this.outputScale;
-        var pixelsInViewport = this.viewport.width * this.viewport.height;
         if (((Math.floor(this.viewport.width) * outputScale.sx) | 0) *
             ((Math.floor(this.viewport.height) * outputScale.sy) | 0) >
             pdfjsLib.PDFJS.maxCanvasPixels) {
diff --git a/web/text_layer_builder.js b/web/text_layer_builder.js
index 98abed00b..0b7090bd8 100644
--- a/web/text_layer_builder.js
+++ b/web/text_layer_builder.js
@@ -225,7 +225,7 @@ var TextLayerBuilder = (function TextLayerBuilderClosure() {
 
         if (this.findController) {
           this.findController.updateMatchPosition(pageIdx, i, textDivs,
-                                                  begin.divIdx, end.divIdx);
+                                                  begin.divIdx);
         }
 
         // Match inside new div.