diff -r f421aef8f865 -r 8ebf55d78341 ui/common/properties.c
--- a/ui/common/properties.c	Fri Dec 12 12:28:32 2025 +0100
+++ b/ui/common/properties.c	Fri Dec 12 12:38:35 2025 +0100
@@ -58,6 +58,23 @@
 
 #endif
 
+static UiBool load_on_startup = TRUE;
+static void *properties_data = NULL;
+static size_t properties_data_length = 0;
+
+void ui_load_properties_file_on_startup(UiBool enable) {
+    load_on_startup = enable;
+}
+
+void ui_set_properties_data(const char *str, size_t len) {
+    if(str && len > 0) {
+        properties_data = malloc(len);
+        memcpy(properties_data, str, len);
+    } else {
+        properties_data = NULL;
+        properties_data_length = 0;
+    }
+}
 
 char* ui_getappdir(void) {
     if(ui_appname() == NULL) {
@@ -155,11 +172,12 @@
         cxPropertiesFilln(&prop, buf, r);
         cxstring key;
         cxstring value;
-        status = cxPropertiesNext(&prop, &key, &value);
+        while((status = cxPropertiesNext(&prop, &key, &value)) == CX_PROPERTIES_NO_ERROR) {
+            cxMapPut(map, key, cx_strdup(value).ptr);
+        }
         if(status > CX_PROPERTIES_OK) {
             break;
         }
-        cxMapPut(map, key, cx_strdup(value).ptr);
     }
     return status == CX_PROPERTIES_NO_ERROR ? 0 : 1;
 }
@@ -168,6 +186,29 @@
     application_properties = cxHashMapCreate(cxDefaultAllocator, CX_STORE_POINTERS, 128);
     application_properties->collection.simple_destructor = free;
     
+    if(!load_on_startup) {
+        if(properties_data) {
+            CxProperties prop;
+            cxPropertiesInitDefault(&prop);
+            
+            CxPropertiesStatus status = CX_PROPERTIES_NO_ERROR;
+            cxPropertiesFilln(&prop, properties_data, properties_data_length);
+            
+            cxstring key;
+            cxstring value;
+            while((status = cxPropertiesNext(&prop, &key, &value)) == CX_PROPERTIES_NO_ERROR) {
+                cxMapPut(application_properties, key, cx_strdup(value).ptr);
+            }
+            
+            if(status != CX_PROPERTIES_NO_ERROR) {
+                fprintf(stderr, "Error: cannot load properties: %d\n", (int)status);
+            } else {
+                cxMapRehash(application_properties);
+            }
+        }
+        return;
+    }
+    
     if(!ui_appname()) {
         // applications without name cannot load app properties
         return;