diff --git a/Ladybird/AppKit/Utilities/Conversions.h b/Ladybird/AppKit/Utilities/Conversions.h
index 7aa9f1c0cb..a5e8aa6805 100644
--- a/Ladybird/AppKit/Utilities/Conversions.h
+++ b/Ladybird/AppKit/Utilities/Conversions.h
@@ -19,6 +19,8 @@ namespace Ladybird {
 String ns_string_to_string(NSString*);
 NSString* string_to_ns_string(StringView);
 
+NSDictionary* deserialize_json_to_dictionary(StringView);
+
 Gfx::IntRect ns_rect_to_gfx_rect(NSRect);
 NSRect gfx_rect_to_ns_rect(Gfx::IntRect);
 
diff --git a/Ladybird/AppKit/Utilities/Conversions.mm b/Ladybird/AppKit/Utilities/Conversions.mm
index 78066730fc..3fc4d5dfcb 100644
--- a/Ladybird/AppKit/Utilities/Conversions.mm
+++ b/Ladybird/AppKit/Utilities/Conversions.mm
@@ -20,6 +20,23 @@ NSString* string_to_ns_string(StringView string)
     return [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
 }
 
+NSDictionary* deserialize_json_to_dictionary(StringView json)
+{
+    auto* ns_json = string_to_ns_string(json);
+    auto* json_data = [ns_json dataUsingEncoding:NSUTF8StringEncoding];
+
+    NSError* error = nil;
+    NSDictionary* dictionary = [NSJSONSerialization JSONObjectWithData:json_data
+                                                               options:0
+                                                                 error:&error];
+
+    if (!dictionary) {
+        NSLog(@"Error deserializing DOM tree: %@", error);
+    }
+
+    return dictionary;
+}
+
 Gfx::IntRect ns_rect_to_gfx_rect(NSRect rect)
 {
     return {