diff --git a/gulpfile.js b/gulpfile.js
index 1160345b7..fd00edf2e 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -79,10 +79,9 @@ const config = JSON.parse(fs.readFileSync(CONFIG_FILE).toString());
 const AUTOPREFIXER_CONFIG = {
   overrideBrowserslist: [
     "last 2 versions",
-    "Chrome >= 49", // Last supported on Windows XP
-    "Firefox >= 52", // Last supported on Windows XP
+    "Chrome >= 68",
     "Firefox ESR",
-    "Safari >= 10",
+    "Safari >= 11.1",
     "> 0.5%",
     "not IE > 0",
     "not dead",
@@ -1321,7 +1320,7 @@ gulp.task(
         ),
         preprocessCSS("web/viewer.css", "chrome", defines, true)
           .pipe(
-            postcss([autoprefixer({ overrideBrowserslist: ["chrome >= 49"] })])
+            postcss([autoprefixer({ overrideBrowserslist: ["chrome >= 68"] })])
           )
           .pipe(gulp.dest(CHROME_BUILD_CONTENT_DIR + "web")),
 
diff --git a/src/shared/compatibility.js b/src/shared/compatibility.js
index dee245a44..62efea713 100644
--- a/src/shared/compatibility.js
+++ b/src/shared/compatibility.js
@@ -51,7 +51,7 @@ if (
   })();
 
   // Provides support for Object.fromEntries in legacy browsers.
-  // Support: Firefox<63, Chrome<73, Safari<12.1
+  // Support: Firefox<63, Chrome<73, Safari<12.1, Node.js<12.0.0
   (function checkObjectFromEntries() {
     if (Object.fromEntries) {
       return;
@@ -61,7 +61,7 @@ if (
 
   // Provides support for *recent* additions to the Promise specification,
   // however basic Promise support is assumed to be available natively.
-  // Support: Firefox<71, Chrome<76, Safari<13
+  // Support: Firefox<71, Chrome<76, Safari<13, Node.js<12.9.0
   (function checkPromise() {
     if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
       // The current image decoders are synchronous, hence `Promise` shouldn't
@@ -74,7 +74,7 @@ if (
     globalThis.Promise = require("core-js/es/promise/index.js");
   })();
 
-  // Support: Safari<10.1, Node.js
+  // Support: Node.js
   (function checkReadableStream() {
     if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
       // The current image decoders are synchronous, hence `ReadableStream`
@@ -102,40 +102,4 @@ if (
     }
     globalThis.ReadableStream = require("web-streams-polyfill/dist/ponyfill.js").ReadableStream;
   })();
-
-  // Provides support for String.prototype.padStart in legacy browsers.
-  // Support: Chrome<57, Safari<10
-  (function checkStringPadStart() {
-    if (String.prototype.padStart) {
-      return;
-    }
-    require("core-js/es/string/pad-start.js");
-  })();
-
-  // Provides support for String.prototype.padEnd in legacy browsers.
-  // Support: Chrome<57, Safari<10
-  (function checkStringPadEnd() {
-    if (String.prototype.padEnd) {
-      return;
-    }
-    require("core-js/es/string/pad-end.js");
-  })();
-
-  // Provides support for Object.values in legacy browsers.
-  // Support: Chrome<54, Safari<10.1
-  (function checkObjectValues() {
-    if (Object.values) {
-      return;
-    }
-    Object.values = require("core-js/es/object/values.js");
-  })();
-
-  // Provides support for Object.entries in legacy browsers.
-  // Support: Chrome<54, Safari<10.1
-  (function checkObjectEntries() {
-    if (Object.entries) {
-      return;
-    }
-    Object.entries = require("core-js/es/object/entries.js");
-  })();
 }