diff --git a/gulpfile.js b/gulpfile.js
index 149386447..c4d54996e 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -63,7 +63,7 @@ const DIST_DIR = BUILD_DIR + "dist/";
 const TYPES_DIR = BUILD_DIR + "types/";
 const TMP_DIR = BUILD_DIR + "tmp/";
 const TYPESTEST_DIR = BUILD_DIR + "typestest/";
-const COMMON_WEB_FILES = ["web/images/*.{png,svg,gif,cur}", "web/debugger.js"];
+const COMMON_WEB_FILES = ["web/images/*.{png,svg,gif}", "web/debugger.js"];
 const MOZCENTRAL_DIFF_FILE = "mozcentral.diff";
 
 const REPO = "git@github.com:mozilla/pdf.js.git";
@@ -801,16 +801,15 @@ gulp.task("cmaps", function (done) {
   done();
 });
 
-function preprocessCSS(source, mode, defines, cleanup) {
+function preprocessCSS(source, mode, defines) {
   const outName = getTempFile("~preprocess", ".css");
   builder.preprocessCSS(mode, source, outName);
   let out = fs.readFileSync(outName).toString();
   fs.unlinkSync(outName);
-  if (cleanup) {
-    // Strip out all license headers in the middle.
-    const reg = /\n\/\* Copyright(.|\n)*?Mozilla Foundation(.|\n)*?\*\//g;
-    out = out.replace(reg, "");
-  }
+
+  // Strip out all license headers in the middle.
+  const reg = /\n\/\* Copyright(.|\n)*?Mozilla Foundation(.|\n)*?\*\//g;
+  out = out.replace(reg, "");
 
   const i = source.lastIndexOf("/");
   return createStringSource(source.substr(i + 1), out);
@@ -849,7 +848,7 @@ function buildGeneric(defines, dir) {
     createStandardFontBundle().pipe(gulp.dest(dir + "web/standard_fonts")),
 
     preprocessHTML("web/viewer.html", defines).pipe(gulp.dest(dir + "web")),
-    preprocessCSS("web/viewer.css", "generic", defines, true)
+    preprocessCSS("web/viewer.css", "generic", defines)
       .pipe(postcss([calc(), autoprefixer(AUTOPREFIXER_CONFIG)]))
       .pipe(gulp.dest(dir + "web")),
 
@@ -925,7 +924,7 @@ function buildComponents(defines, dir) {
   return merge([
     createComponentsBundle(defines).pipe(gulp.dest(dir)),
     gulp.src(COMPONENTS_IMAGES).pipe(gulp.dest(dir + "images")),
-    preprocessCSS("web/pdf_viewer.css", "components", defines, true)
+    preprocessCSS("web/pdf_viewer.css", "components", defines)
       .pipe(postcss([calc(), autoprefixer(AUTOPREFIXER_CONFIG)]))
       .pipe(gulp.dest(dir)),
   ]);
@@ -1015,7 +1014,7 @@ function buildMinified(defines, dir) {
     createStandardFontBundle().pipe(gulp.dest(dir + "web/standard_fonts")),
 
     preprocessHTML("web/viewer.html", defines).pipe(gulp.dest(dir + "web")),
-    preprocessCSS("web/viewer.css", "minified", defines, true)
+    preprocessCSS("web/viewer.css", "minified", defines)
       .pipe(postcss([calc(), autoprefixer(AUTOPREFIXER_CONFIG)]))
       .pipe(gulp.dest(dir + "web")),
 
@@ -1216,13 +1215,6 @@ gulp.task(
       const version = versionJSON.version,
         commit = versionJSON.commit;
 
-      // Ignore the fallback cursor images, since they're unnecessary in
-      // Firefox.
-      const MOZCENTRAL_COMMON_WEB_FILES = [
-        ...COMMON_WEB_FILES,
-        "!web/images/*.cur",
-      ];
-
       return merge([
         createMainBundle(defines).pipe(
           gulp.dest(MOZCENTRAL_CONTENT_DIR + "build")
@@ -1240,7 +1232,7 @@ gulp.task(
           gulp.dest(MOZCENTRAL_CONTENT_DIR + "web")
         ),
         gulp
-          .src(MOZCENTRAL_COMMON_WEB_FILES, { base: "web/" })
+          .src(COMMON_WEB_FILES, { base: "web/" })
           .pipe(gulp.dest(MOZCENTRAL_CONTENT_DIR + "web")),
         createCMapBundle().pipe(
           gulp.dest(MOZCENTRAL_CONTENT_DIR + "web/cmaps")
@@ -1252,7 +1244,7 @@ gulp.task(
         preprocessHTML("web/viewer.html", defines).pipe(
           gulp.dest(MOZCENTRAL_CONTENT_DIR + "web")
         ),
-        preprocessCSS("web/viewer.css", "mozcentral", defines, true)
+        preprocessCSS("web/viewer.css", "mozcentral", defines)
           .pipe(
             postcss([
               autoprefixer({
@@ -1344,7 +1336,7 @@ gulp.task(
         preprocessHTML("web/viewer.html", defines).pipe(
           gulp.dest(CHROME_BUILD_CONTENT_DIR + "web")
         ),
-        preprocessCSS("web/viewer.css", "chrome", defines, true)
+        preprocessCSS("web/viewer.css", "chrome", defines)
           .pipe(
             postcss([autoprefixer({ overrideBrowserslist: ["Chrome >= 73"] })])
           )
diff --git a/web/images/grab.cur b/web/images/grab.cur
deleted file mode 100644
index db7ad5aed..000000000
Binary files a/web/images/grab.cur and /dev/null differ
diff --git a/web/images/grabbing.cur b/web/images/grabbing.cur
deleted file mode 100644
index e0dfd04e4..000000000
Binary files a/web/images/grabbing.cur and /dev/null differ
diff --git a/web/viewer.css b/web/viewer.css
index 84d1cd1e2..2f658eaaf 100644
--- a/web/viewer.css
+++ b/web/viewer.css
@@ -1699,7 +1699,6 @@ html[dir="rtl"] .treeItemToggler::before {
 }
 
 .grab-to-pan-grab {
-  cursor: url("images/grab.cur"), move !important;
   cursor: grab !important;
 }
 .grab-to-pan-grab
@@ -1708,7 +1707,6 @@ html[dir="rtl"] .treeItemToggler::before {
 }
 .grab-to-pan-grab:active,
 .grab-to-pan-grabbing {
-  cursor: url("images/grabbing.cur"), move !important;
   cursor: grabbing !important;
   position: fixed;
   background: rgba(0, 0, 0, 0);