diff --git a/src/internal/pointer/double-pointer.ts b/src/internal/pointer/double-pointer.ts
index 33198c2e..8bfd73c3 100644
--- a/src/internal/pointer/double-pointer.ts
+++ b/src/internal/pointer/double-pointer.ts
@@ -2,26 +2,20 @@
 // Licensed under the Apache License, Version 2.0.
 
 import { ImageMagick } from '../../image-magick';
+import { Pointer } from './pointer';
 
 /** @internal */
-export class DoublePointer {
-    private readonly instance: number;
-
+export class DoublePointer extends Pointer {
     private constructor() {
-        this.instance = ImageMagick._api._malloc(8);
-        ImageMagick._api.setValue(this.instance, 0, 'double');
+        super(8, 'double');
     }
 
-    get ptr(): number { return this.instance; }
-
-    get value(): number { return ImageMagick._api.getValue(this.instance, 'double'); }
-
     static use<TReturnType>(func: (pointer: DoublePointer) => TReturnType): TReturnType {
         const pointer = new DoublePointer();
         try {
             return func(pointer);
         } finally {
-            ImageMagick._api._free(pointer.instance);
+            ImageMagick._api._free(pointer.ptr);
         }
     }
 }
diff --git a/src/internal/pointer/int-pointer.ts b/src/internal/pointer/int-pointer.ts
index 51ba7544..22fa47fb 100644
--- a/src/internal/pointer/int-pointer.ts
+++ b/src/internal/pointer/int-pointer.ts
@@ -2,26 +2,20 @@
 // Licensed under the Apache License, Version 2.0.
 
 import { ImageMagick } from '../../image-magick';
+import { Pointer } from './pointer';
 
 /** @internal */
-export class IntPointer {
-    private readonly instance: number;
-
+export class IntPointer extends Pointer {
     private constructor() {
-        this.instance = ImageMagick._api._malloc(4);
-        ImageMagick._api.setValue(this.instance, 0, 'i32');
+        super(4, 'i32');
     }
 
-    get ptr(): number { return this.instance; }
-
-    get value(): number { return ImageMagick._api.getValue(this.instance, 'i32'); }
-
     static use<TReturnType>(func: (pointer: IntPointer) => TReturnType): TReturnType {
         const pointer = new IntPointer();
         try {
             return func(pointer);
         } finally {
-            ImageMagick._api._free(pointer.instance);
+            ImageMagick._api._free(pointer.ptr);
         }
     }
 }
diff --git a/src/internal/pointer/pointer.ts b/src/internal/pointer/pointer.ts
new file mode 100644
index 00000000..c416b609
--- /dev/null
+++ b/src/internal/pointer/pointer.ts
@@ -0,0 +1,20 @@
+// Copyright Dirk Lemstra https://github.com/dlemstra/magick-wasm.
+// Licensed under the Apache License, Version 2.0.
+
+import { ImageMagick } from '../../image-magick';
+
+/** @internal */
+export abstract class Pointer {
+    private readonly instance: number;
+    private readonly type: string;
+
+    protected constructor(size: number, type: string) {
+        this.instance = ImageMagick._api._malloc(size);
+        this.type = type;
+        ImageMagick._api.setValue(this.instance, 0, this.type);
+    }
+
+    get ptr(): number { return this.instance; }
+
+    get value(): number { return ImageMagick._api.getValue(this.instance, this.type); }
+}