diff --git a/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp b/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
index a3a92231be..16a2205df1 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
+++ b/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/FlyString.h>
 #include <LibJS/Runtime/TypedArray.h>
 #include <LibWeb/Bindings/Wrapper.h>
 #include <LibWeb/Encoding/TextEncoder.h>
@@ -33,4 +34,11 @@ JS::Uint8Array* TextEncoder::encode(String const& input) const
     return typed_array;
 }
 
+// https://encoding.spec.whatwg.org/#dom-textencoder-encoding
+FlyString const& TextEncoder::encoding()
+{
+    static FlyString encoding = "utf-8"sv;
+    return encoding;
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/Encoding/TextEncoder.h b/Userland/Libraries/LibWeb/Encoding/TextEncoder.h
index 2f97d536ba..dc39596147 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextEncoder.h
+++ b/Userland/Libraries/LibWeb/Encoding/TextEncoder.h
@@ -34,6 +34,8 @@ public:
 
     JS::Uint8Array* encode(String const& input) const;
 
+    static FlyString const& encoding();
+
 protected:
     // https://encoding.spec.whatwg.org/#dom-textencoder
     TextEncoder() = default;
diff --git a/Userland/Libraries/LibWeb/Encoding/TextEncoder.idl b/Userland/Libraries/LibWeb/Encoding/TextEncoder.idl
index 8463e8a105..676c7ce037 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextEncoder.idl
+++ b/Userland/Libraries/LibWeb/Encoding/TextEncoder.idl
@@ -5,5 +5,5 @@ interface TextEncoder {
     [NewObject] Uint8Array encode(optional USVString input = "");
     // TextEncoderEncodeIntoResult encodeInto(USVString source, [AllowShared] Uint8Array destination);
 
-    // readonly attribute DOMString encoding;
+    readonly attribute DOMString encoding;
 };
diff --git a/Userland/Libraries/LibWeb/Tests/Encoding/TextEncoder.prototype.encoding.js b/Userland/Libraries/LibWeb/Tests/Encoding/TextEncoder.prototype.encoding.js
new file mode 100644
index 0000000000..50a61beff8
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Tests/Encoding/TextEncoder.prototype.encoding.js
@@ -0,0 +1,12 @@
+describe("normal behavior", () => {
+    loadLocalPage("/res/html/misc/blank.html");
+
+    afterInitialPageLoad(page => {
+        test("Basic functionality", () => {
+            const textEncoder = new page.TextEncoder();
+
+            expect(textEncoder.encoding).toBe("utf-8");
+        });
+    });
+    waitForPageToLoad();
+});