--- a/seobeo/seobeo_internal.h	Fri Jan 09 07:42:04 2026 -0800
+++ b/seobeo/seobeo_internal.h	Fri Jan 09 08:23:54 2026 -0800
@@ -50,8 +50,14 @@
   atomic_bool destroyed;
 } Seobeo_Handle;
 
-// HTML cache type: maps file paths (char*) to file contents (char*)
-typedef Dowa_KV(char*, char*) Seobeo_Cache_Entry;
+// Cached file entry with content and size (for binary file support)
+typedef struct {
+  char  *content;
+  size_t size;
+} Seobeo_Cached_File;
+
+// HTML cache type: maps file paths (char*) to cached file entries (Seobeo_Cached_File*)
+typedef Dowa_KV(char*, Seobeo_Cached_File*) Seobeo_Cache_Entry;
 
 typedef struct {
   Seobeo_Handle       *srv;