diff --git a/Tests/LibWeb/Text/expected/geometry/dommatrix.txt b/Tests/LibWeb/Text/expected/geometry/dommatrix.txt
index 9ee284863e..26a66f5c36 100644
--- a/Tests/LibWeb/Text/expected/geometry/dommatrix.txt
+++ b/Tests/LibWeb/Text/expected/geometry/dommatrix.txt
@@ -1,3 +1,8 @@
 1. {"a":10,"b":20,"c":30,"d":40,"e":50,"f":60,"m11":10,"m12":20,"m13":0,"m14":0,"m21":30,"m22":40,"m23":0,"m24":0,"m31":0,"m32":0,"m33":1,"m34":0,"m41":50,"m42":60,"m43":0,"m44":1,"is2D":true,"isIdentity":false}
 2. {"a":10,"b":20,"c":30,"d":40,"e":50,"f":60,"m11":10,"m12":20,"m13":0,"m14":0,"m21":30,"m22":40,"m23":0,"m24":0,"m31":0,"m32":0,"m33":1,"m34":0,"m41":50,"m42":60,"m43":0,"m44":1,"is2D":true,"isIdentity":false}
 3. {"a":700,"b":1000,"c":1500,"d":2200,"e":2350,"f":3460,"m11":700,"m12":1000,"m13":0,"m14":0,"m21":1500,"m22":2200,"m23":0,"m24":0,"m31":0,"m32":0,"m33":1,"m34":0,"m41":2350,"m42":3460,"m43":0,"m44":1,"is2D":true,"isIdentity":false}
+4. {"a":1,"b":0,"c":0,"d":1,"e":25,"f":25,"m11":1,"m12":0,"m13":0,"m14":0,"m21":0,"m22":1,"m23":0,"m24":0,"m31":0,"m32":0,"m33":1,"m34":0,"m41":25,"m42":25,"m43":0,"m44":1,"is2D":true,"isIdentity":false}
+5. {"a":10,"b":20,"c":30,"d":40,"e":1050,"f":1560,"m11":10,"m12":20,"m13":0,"m14":0,"m21":30,"m22":40,"m23":0,"m24":0,"m31":0,"m32":0,"m33":1,"m34":0,"m41":1050,"m42":1560,"m43":0,"m44":1,"is2D":true,"isIdentity":false}
+6. {"a":10,"b":20,"c":30,"d":40,"e":1050,"f":1560,"m11":10,"m12":20,"m13":0,"m14":0,"m21":30,"m22":40,"m23":0,"m24":0,"m31":0,"m32":0,"m33":1,"m34":0,"m41":1050,"m42":1560,"m43":0,"m44":1,"is2D":true,"isIdentity":false}
+7. {"a":10,"b":20,"c":30,"d":40,"e":1050,"f":1560,"m11":10,"m12":20,"m13":0,"m14":0,"m21":30,"m22":40,"m23":0,"m24":0,"m31":0,"m32":0,"m33":1,"m34":0,"m41":1050,"m42":1560,"m43":0,"m44":1,"is2D":true,"isIdentity":false}
+8. {"a":10,"b":20,"c":30,"d":40,"e":75,"f":85,"m11":10,"m12":20,"m13":0,"m14":0,"m21":30,"m22":40,"m23":0,"m24":0,"m31":0,"m32":0,"m33":1,"m34":0,"m41":75,"m42":85,"m43":0,"m44":1,"is2D":true,"isIdentity":false}
diff --git a/Tests/LibWeb/Text/input/geometry/dommatrix.html b/Tests/LibWeb/Text/input/geometry/dommatrix.html
index a6d1a88517..df0526efec 100644
--- a/Tests/LibWeb/Text/input/geometry/dommatrix.html
+++ b/Tests/LibWeb/Text/input/geometry/dommatrix.html
@@ -14,5 +14,20 @@
 
         // 3. Multiply DOMMatrix by DOMMatrix
         testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60]).multiply(new DOMMatrix([10, 20, 30, 40, 50, 60])));
+
+        // 4. Create translation DOMMatrix
+        testPart(() => new DOMMatrix().translate(25, 25));
+
+        // 5. Translate DOMMatrix
+        testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60]).translateSelf(25, 25));
+
+        // 6. Translate DOMMatrix with multiply
+        testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60]).multiply(new DOMMatrix().translate(25, 25)));
+
+        // 7. Translate DOMMatrix with multiplySelf
+        testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60]).multiplySelf(new DOMMatrix().translate(25, 25)));
+
+        // 8. Translate DOMMatrix with preMultiplySelf
+        testPart(() => new DOMMatrix([10, 20, 30, 40, 50, 60]).preMultiplySelf(new DOMMatrix().translate(25, 25)));
     });
 </script>
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp b/Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
index 5c831947b6..cc1ba90429 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
@@ -293,6 +293,20 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> DOMMatrix::pre_multiply_self(DO
     return JS::NonnullGCPtr<DOMMatrix>(*this);
 }
 
+// https://drafts.fxtf.org/geometry/#dom-dommatrix-translateself
+JS::NonnullGCPtr<DOMMatrix> DOMMatrix::translate_self(Optional<double> tx, Optional<double> ty, Optional<double> tz)
+{
+    // 1. Post-multiply a translation transformation on the current matrix. The 3D translation matrix is described in CSS Transforms.
+    m_matrix = m_matrix * Gfx::translation_matrix(Vector3<double> { tx.value_or(0), ty.value_or(0), tz.value_or(0) });
+
+    // 2. If tz is specified and not 0 or -0, set is 2D of the current matrix to false.
+    if (tz.has_value() && (tz != 0 || tz != -0))
+        m_is_2d = false;
+
+    // 3. Return the current matrix.
+    return *this;
+}
+
 // https://drafts.fxtf.org/geometry/#dom-dommatrix-invertself
 JS::NonnullGCPtr<DOMMatrix> DOMMatrix::invert_self()
 {
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrix.h b/Userland/Libraries/LibWeb/Geometry/DOMMatrix.h
index fb54af3643..22dcde9006 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrix.h
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrix.h
@@ -49,6 +49,7 @@ public:
 
     WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> multiply_self(DOMMatrixInit other = {});
     WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> pre_multiply_self(DOMMatrixInit other = {});
+    JS::NonnullGCPtr<DOMMatrix> translate_self(Optional<double> tx, Optional<double> ty, Optional<double> tz);
     JS::NonnullGCPtr<DOMMatrix> invert_self();
 
 private:
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrix.idl b/Userland/Libraries/LibWeb/Geometry/DOMMatrix.idl
index 77192be709..535da9f0ee 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrix.idl
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrix.idl
@@ -38,7 +38,7 @@ interface DOMMatrix : DOMMatrixReadOnly {
     // Mutable transform methods
     DOMMatrix multiplySelf(optional DOMMatrixInit other = {});
     DOMMatrix preMultiplySelf(optional DOMMatrixInit other = {});
-    // FIXME: DOMMatrix translateSelf(optional unrestricted double tx = 0, optional unrestricted double ty = 0, optional unrestricted double tz = 0);
+    DOMMatrix translateSelf(optional unrestricted double tx = 0, optional unrestricted double ty = 0, optional unrestricted double tz = 0);
     // FIXME: DOMMatrix scaleSelf(optional unrestricted double scaleX = 1, optional unrestricted double scaleY, optional unrestricted double scaleZ = 1, optional unrestricted double originX = 0, optional unrestricted double originY = 0, optional unrestricted double originZ = 0);
     // FIXME: DOMMatrix scale3dSelf(optional unrestricted double scale = 1, optional unrestricted double originX = 0, optional unrestricted double originY = 0, optional unrestricted double originZ = 0);
     // FIXME: DOMMatrix rotateSelf(optional unrestricted double rotX = 0, optional unrestricted double rotY, optional unrestricted double rotZ);
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
index 880ca19680..8a6504f71d 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
@@ -239,6 +239,17 @@ bool DOMMatrixReadOnly::is_identity() const
     return true;
 }
 
+// https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-translate
+JS::NonnullGCPtr<DOMMatrix> DOMMatrixReadOnly::translate(Optional<double> const& tx, Optional<double> const& ty, Optional<double> const& tz) const
+{
+    // 1. Let result be the resulting matrix initialized to the values of the current matrix.
+    auto result = DOMMatrix::create_from_dom_matrix_read_only(realm(), *this);
+
+    // 2. Perform a translateSelf() transformation on result with the arguments tx, ty, tz.
+    // 3. Return result.
+    return result->translate_self(tx, ty, tz);
+}
+
 // https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-multiply
 WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> DOMMatrixReadOnly::multiply(DOMMatrixInit other)
 {
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h
index a7e1408ccb..409374ca3f 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h
@@ -83,6 +83,7 @@ public:
     bool is2d() const { return m_is_2d; }
     bool is_identity() const;
 
+    JS::NonnullGCPtr<DOMMatrix> translate(Optional<double> const& tx, Optional<double> const& ty, Optional<double> const& tz) const;
     WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMMatrix>> multiply(DOMMatrixInit other = {});
     JS::NonnullGCPtr<DOMMatrix> inverse() const;
 
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.idl b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.idl
index c76c1b9e4e..ed60bf7a97 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.idl
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.idl
@@ -39,7 +39,7 @@ interface DOMMatrixReadOnly {
     readonly attribute boolean isIdentity;
 
     // Immutable transform methods
-    // FIXME: [NewObject] DOMMatrix translate(optional unrestricted double tx = 0, optional unrestricted double ty = 0, optional unrestricted double tz = 0);
+    [NewObject] DOMMatrix translate(optional unrestricted double tx = 0, optional unrestricted double ty = 0, optional unrestricted double tz = 0);
     // FIXME: [NewObject] DOMMatrix scale(optional unrestricted double scaleX = 1, optional unrestricted double scaleY, optional unrestricted double scaleZ = 1, optional unrestricted double originX = 0, optional unrestricted double originY = 0, optional unrestricted double originZ = 0);
     // FIXME: [NewObject] DOMMatrix scaleNonUniform(optional unrestricted double scaleX = 1, optional unrestricted double scaleY = 1);
     // FIXME: [NewObject] DOMMatrix scale3d(optional unrestricted double scale = 1, optional unrestricted double originX = 0, optional unrestricted double originY = 0, optional unrestricted double originZ = 0);