diff --git a/src/perfetto_categories.hpp b/src/perfetto_categories.hpp
new file mode 100644
index 0000000..882f86b
--- /dev/null
+++ b/src/perfetto_categories.hpp
@@ -0,0 +1,14 @@
+#pragma once
+
+#define ENABLE_PERFETTO 1
+
+#if ENABLE_PERFETTO
+#include <perfetto.h>
+#else
+#define PERFETTO_DEFINE_CATEGORIES(...)
+#define TRACE_EVENT(...)
+#endif
+
+// Define perfetto categories - this can be included in multiple files
+PERFETTO_DEFINE_CATEGORIES(
+    perfetto::Category("http").SetDescription("HTTP requests"));