diff --git a/crud/cds_websites_pages/templates/widgets/cds_websites_pages_external_oggetti_portale_widget.html b/crud/cds_websites_pages/templates/widgets/cds_websites_pages_external_oggetti_portale_widget.html
index 1b2f45db..edd2734c 100644
--- a/crud/cds_websites_pages/templates/widgets/cds_websites_pages_external_oggetti_portale_widget.html
+++ b/crud/cds_websites_pages/templates/widgets/cds_websites_pages_external_oggetti_portale_widget.html
@@ -136,10 +136,10 @@ <h4 v-if="preview.subheading" class="pt-1 pb-4" style="font-weight: lighter">[[
                 const objectClass = this.objectClass;
                 var searchUrl = '';
                 if(this.searchField === 'ID') {
-                    searchUrl = `${this.url}${this.query}/?object_class=${objectClass}`;
+                    searchUrl = `${this.url}${this.query}/?object_class=${objectClass}&format=json`;
                 }
                 else if(this.searchField === 'Name') {
-                    searchUrl = `${this.url}?search=${this.query}&object_class=${objectClass}`;
+                    searchUrl = `${this.url}?search=${this.query}&object_class=${objectClass}&format=json`;
                 }
                 this.fetchData(searchUrl);
             },
@@ -181,7 +181,7 @@ <h4 v-if="preview.subheading" class="pt-1 pb-4" style="font-weight: lighter">[[
             },
             fetchInitialData() {
                 const objectClass = this.objectClass;
-                const initialUrl = `${this.url}${this.initialValue}/?object_class=${objectClass}`;
+                const initialUrl = `${this.url}${this.initialValue}/?object_class=${objectClass}&format=json`;
                 this.isLoadingSearch = true;
                 axios.get(initialUrl)
                     .then(response => {
@@ -199,7 +199,7 @@ <h4 v-if="preview.subheading" class="pt-1 pb-4" style="font-weight: lighter">[[
                 if (!this.selectedOption) return;
                 const objectClass = this.selectedOption.object_class;
                 if (objectClass === "Publication") {
-                    const previewUrl = `${this.url}${this.selectedOption.id}/?object_class=${objectClass}`;
+                    const previewUrl = `${this.url}${this.selectedOption.id}/?object_class=${objectClass}&format=json`;
                     this.isLoadingPreview = true;
                     $('#preview-modal').modal('show');
                     axios.get(previewUrl)
diff --git a/crud/cds_websites_pages/templates/widgets/cds_websites_pages_oggetti_portale_widget.html b/crud/cds_websites_pages/templates/widgets/cds_websites_pages_oggetti_portale_widget.html
index 8d524a17..062ec51e 100644
--- a/crud/cds_websites_pages/templates/widgets/cds_websites_pages_oggetti_portale_widget.html
+++ b/crud/cds_websites_pages/templates/widgets/cds_websites_pages_oggetti_portale_widget.html
@@ -59,7 +59,7 @@
                         clearTimeout(this.api_debounce_timeout);
                     }
                     this.api_debounce_timeout = setTimeout(() => {
-                        this.search(this.url + '?search=' + newQuery);
+                        this.search(`${this.url}?search=${newQuery}&format=json`);
                     }, 500); // 500 milliseconds
                 }
             }
@@ -106,7 +106,7 @@
             fetchInitialData() {
                 this.is_loading = true
                 axios
-                    .get(this.url + `${this.initial_value}`)
+                    .get(this.url + `${this.initial_value}/?format=json`)
                     .then(response => {
                         this.selectOption(response.data, true);
                     })
diff --git a/crud/cds_websites_pages/views.py b/crud/cds_websites_pages/views.py
index ade12605..c238ff79 100644
--- a/crud/cds_websites_pages/views.py
+++ b/crud/cds_websites_pages/views.py
@@ -842,7 +842,7 @@ def list(self, request):
             
         url = UNICMS_OBJECT_API[object_class] 
         headers = { 'Authorization': f'Token {UNICMS_AUTH_TOKEN}' }
-        params = {'search': search}
+        params = { 'search': search, 'format': 'json' }
         try:
             response_obj = {}
             response = requests.get(url, params=params, headers=headers)
@@ -885,9 +885,10 @@ def retrieve(self, request, pk=None):
         
         url = f"{UNICMS_OBJECT_API[object_class]}{pk}/"
         headers = { 'Authorization': f'Token {UNICMS_AUTH_TOKEN}' }
+        params = { 'format': 'json' }
 
         try:
-            response = requests.get(url, headers=headers)
+            response = requests.get(url, headers=headers, params=params)
             response.raise_for_status()
             response_json = response.json()
             response_json["object_class"] = object_class