diff --git a/Plugin/DefaultConfiguration.json b/Plugin/DefaultConfiguration.json
index 406c4c6..a673e26 100644
--- a/Plugin/DefaultConfiguration.json
+++ b/Plugin/DefaultConfiguration.json
@@ -48,6 +48,8 @@
             "EnableSettings": true,                     // Enables the settings menu/interface
             "EnableLinkToLegacyUi": true,               // Enables a link to the legacy Orthanc UI
             "EnableChangePassword": true,               // Enables the 'change password' button in the side bar.  Only applicable if Keycloak is enabled
+            "EnableQuickViewerButton": true,            // Enables a button in the study list to directly open a viewer
+            "EnableQuickReportButton": true,            // Enables a button in the study list to directly open a PDF report if available in the study
 
             "EnableEditLabels": true,                   // Enables labels management (create/delete/assign/unassign)
             "AvailableLabels": [],                      // If not empty, this list prevents the creation of new labels and only allows add/remove of the listed labels.
diff --git a/Plugin/Plugin.cpp b/Plugin/Plugin.cpp
index 513466e..90f8c9a 100644
--- a/Plugin/Plugin.cpp
+++ b/Plugin/Plugin.cpp
@@ -666,6 +666,8 @@ void GetOE2Configuration(OrthancPluginRestOutput* output,
         LOG(INFO) << "Overriding \"Enable...\" in UiOptions with the permissions from the auth-service for this user-profile";
 
         UpdateUiOptions(uiOptions["EnableStudyList"], permissions, "all|view");
+        UpdateUiOptions(uiOptions["EnableQuickViewerButton"], permissions, "all|view");
+        UpdateUiOptions(uiOptions["EnableQuickReportButton"], permissions, "all|view");
         UpdateUiOptions(uiOptions["EnableUpload"], permissions, "all|upload");
         UpdateUiOptions(uiOptions["EnableAddSeries"], permissions, "all|upload");
         UpdateUiOptions(uiOptions["EnableDicomModalities"], permissions, "all|q-r-remote-modalities");
diff --git a/WebApplication/src/components/StudyItem.vue b/WebApplication/src/components/StudyItem.vue
index d454470..9f501bc 100644
--- a/WebApplication/src/components/StudyItem.vue
+++ b/WebApplication/src/components/StudyItem.vue
@@ -146,16 +146,16 @@ export default {
             }
         },
         hasPdfReportIconPlaceholder() {
-            return this.studiesSourceType == SourceType.LOCAL_ORTHANC && !this.hasPdfReportIcon;
+            return this.studiesSourceType == SourceType.LOCAL_ORTHANC && this.uiOptions.EnableQuickReportButton && !this.hasPdfReportIcon;
         },
         hasPdfReportIcon() {
-            return this.study.RequestedTags.SOPClassesInStudy && this.study.RequestedTags.SOPClassesInStudy.indexOf("1.2.840.10008.5.1.4.1.1.104.1") != -1;
+            return this.study.RequestedTags.SOPClassesInStudy && this.study.RequestedTags.SOPClassesInStudy.indexOf("1.2.840.10008.5.1.4.1.1.104.1") != -1 && this.uiOptions.EnableQuickReportButton;
         },
         hasPrimaryViewerIconPlaceholder() {
-            return this.studiesSourceType == SourceType.LOCAL_ORTHANC && !this.hasPrimaryViewerIcon;
+            return this.studiesSourceType == SourceType.LOCAL_ORTHANC && this.uiOptions.EnableQuickViewerButton && !this.hasPrimaryViewerIcon;
         },
         hasPrimaryViewerIcon() {
-            return this.studiesSourceType == SourceType.LOCAL_ORTHANC && this.primaryViewerUrl;
+            return this.studiesSourceType == SourceType.LOCAL_ORTHANC && this.primaryViewerUrl && this.uiOptions.EnableQuickViewerButton;
         },
         primaryViewerUrl() {
             return resourceHelpers.getPrimaryViewerUrl("study", this.study.ID, this.study.MainDicomTags.StudyInstanceUID);
diff --git a/WebApplication/src/components/StudyList.vue b/WebApplication/src/components/StudyList.vue
index 85f2cd5..6b28168 100644
--- a/WebApplication/src/components/StudyList.vue
+++ b/WebApplication/src/components/StudyList.vue
@@ -155,10 +155,10 @@ export default {
             return this.uiOptions.DateFormat;
         },
         hasPrimaryViewerIcon() {
-            return this.sourceType == SourceType.LOCAL_ORTHANC;
+            return this.sourceType == SourceType.LOCAL_ORTHANC && this.uiOptions.EnableQuickViewerButton;
         },
         hasPdfReportIcon() {
-            return this.sourceType == SourceType.LOCAL_ORTHANC;
+            return this.sourceType == SourceType.LOCAL_ORTHANC && this.uiOptions.EnableQuickReportButton;
         }
     },
     watch: {
diff --git a/WebApplication/src/store/modules/configuration.js b/WebApplication/src/store/modules/configuration.js
index 01c89e9..5df230b 100644
--- a/WebApplication/src/store/modules/configuration.js
+++ b/WebApplication/src/store/modules/configuration.js
@@ -41,7 +41,9 @@ const mutations = {
         if (uiOptions.StudyListColumns.indexOf('seriesCount') != -1 || uiOptions.StudyListColumns.indexOf('seriesAndInstancesCount') != -1) {
             state.requestedTagsForStudyList.push('NumberOfStudyRelatedSeries')
         }
-        state.requestedTagsForStudyList.push('SOPClassesInStudy'); // to detect PDF files
+        if (uiOptions.EnableQuickReportButton) {
+            state.requestedTagsForStudyList.push('SOPClassesInStudy'); // to detect PDF files
+        }
     },
     setUserProfile(state, { profile }) {
         state.userProfile = profile;
diff --git a/release-notes.md b/release-notes.md
index a2f9796..4a23693 100644
--- a/release-notes.md
+++ b/release-notes.md
@@ -1,6 +1,15 @@
 Pending changes
 ===============
 
+Changes:
+  - new configuration "EnableQuickViewerButton" to enable/disable a button
+    to open a viewer directly from the study list (default value: true).
+  - new configuration "EnableQuickReportButton" to enable/disable a button
+    to open a PDF report directly from the study list if available in the study.
+    (default value: false).  Note that, with Orthanc version up to 1.12.4, this
+    option may slow down the display of the study list.
+    
+
 Fixes:
   - When modifying studies, dates selected from the DatePicker were not always taken into account.
   - Primary viewer icon was not visible when using an external OHIF viewer.