TwiN · rickklaasboer · Oct 17, 2025 · Oct 17, 2025 · Oct 20, 2025 · Oct 20, 2025
diff --git a/README.md b/README.md
@@ -271,6 +271,7 @@ If you want to test it locally, see [Docker](#docker).
 | `ui.dark-mode`               | Whether to enable dark mode by default. Note that this is superseded by the user's operating system theme preferences.                   | `true`                     |
 | `ui.default-sort-by`         | Default sorting option for endpoints in the dashboard. Can be `name`, `group`, or `health`. Note that user preferences override this.    | `name`                     |
 | `ui.default-filter-by`       | Default filter option for endpoints in the dashboard. Can be `none`, `failing`, or `unstable`. Note that user preferences override this. | `none`                     |
+| `ui.default-group-collapse`  | Default collapse option for statuses in the dashboard. Can be either `true` or `false`. Note that user preferences override this.        | `false`                    |
 | `maintenance`                | [Maintenance configuration](#maintenance).                                                                                               | `{}`                       |
 
 If you want more verbose logging, you may set the `GATUS_LOG_LEVEL` environment variable to `DEBUG`.

diff --git a/config/ui/ui.go b/config/ui/ui.go
@@ -21,11 +21,13 @@ const (
 )
 
 var (
-	defaultDarkMode = true
+	defaultDarkMode  = true
+	defaultGroupCollapse  = true
 
 	ErrButtonValidationFailed = errors.New("invalid button configuration: missing required name or link")
 	ErrInvalidDefaultSortBy   = errors.New("invalid default-sort-by value: must be 'name', 'group', or 'health'")
 	ErrInvalidDefaultFilterBy = errors.New("invalid default-filter-by value: must be 'none', 'failing', or 'unstable'")
+	ErrInvalidDefaultGroupCollapse = errors.New("invalid default-group-collapse value: must be a boolean")
 )
 
 // Config is the configuration for the UI of Gatus
@@ -40,6 +42,7 @@ type Config struct {
 	DarkMode        *bool    `yaml:"dark-mode,omitempty"`         // DarkMode is a flag to enable dark mode by default
 	DefaultSortBy   string   `yaml:"default-sort-by,omitempty"`   // DefaultSortBy is the default sort option ('name', 'group', 'health')
 	DefaultFilterBy string   `yaml:"default-filter-by,omitempty"` // DefaultFilterBy is the default filter option ('none', 'failing', 'unstable')
+	DefaultGroupCollapse *bool     `yaml:"default-group-collapse,omitempty"`  // DefaultGroupCollapse is a flag to enable/disable collapsing of groups by default
 
 	//////////////////////////////////////////////
 	// Non-configurable - used for UI rendering //
@@ -80,6 +83,7 @@ func GetDefaultConfig() *Config {
 		DarkMode:               &defaultDarkMode,
 		DefaultSortBy:          defaultSortBy,
 		DefaultFilterBy:        defaultFilterBy,
+		DefaultGroupCollapse:        &defaultGroupCollapse,
 		MaximumNumberOfResults: storage.DefaultMaximumNumberOfResults,
 	}
 }
@@ -117,6 +121,9 @@ func (cfg *Config) ValidateAndSetDefaults() error {
 	} else if cfg.DefaultFilterBy != "none" && cfg.DefaultFilterBy != "failing" && cfg.DefaultFilterBy != "unstable" {
 		return ErrInvalidDefaultFilterBy
 	}
+	if cfg.DefaultGroupCollapse == nil {
+	    cfg.DefaultGroupCollapse = &defaultGroupCollapse
+	}
 	for _, btn := range cfg.Buttons {
 		if err := btn.Validate(); err != nil {
 			return err

diff --git a/web/app/public/index.html b/web/app/public/index.html
@@ -3,7 +3,7 @@
   <head>
     <meta charset="utf-8" />
     <script type="text/javascript">
-      window.config = {logo: "{{ .UI.Logo }}", header: "{{ .UI.Header }}", link: "{{ .UI.Link }}", buttons: [], maximumNumberOfResults: "{{ .UI.MaximumNumberOfResults }}", defaultSortBy: "{{ .UI.DefaultSortBy }}", defaultFilterBy: "{{ .UI.DefaultFilterBy }}"};{{- range .UI.Buttons}}window.config.buttons.push({name:"{{ .Name }}",link:"{{ .Link }}"});{{end}}
+      window.config = {logo: "{{ .UI.Logo }}", header: "{{ .UI.Header }}", link: "{{ .UI.Link }}", buttons: [], maximumNumberOfResults: "{{ .UI.MaximumNumberOfResults }}", defaultSortBy: "{{ .UI.DefaultSortBy }}", defaultFilterBy: "{{ .UI.DefaultFilterBy }}", defaultGroupCollapse: "{{ .UI.DefaultGroupCollapse }}"};{{- range .UI.Buttons}}window.config.buttons.push({name:"{{ .Name }}",link:"{{ .Link }}"});{{end}}
       // Initialize theme immediately to prevent flash
       (function() {
         const themeFromCookie = document.cookie.match(/theme=(dark|light);?/)?.[1];

diff --git a/web/app/src/views/Home.vue b/web/app/src/views/Home.vue
@@ -17,13 +17,16 @@
               <Activity v-if="showAverageResponseTime" class="h-5 w-5" />
               <Timer v-else class="h-5 w-5" />
             </Button>
+
             <Button variant="ghost" size="icon" @click="refreshData" title="Refresh data">
               <RefreshCw class="h-5 w-5" />
             </Button>
           </div>
         </div>
+
         <!-- Announcement Banner -->
         <AnnouncementBanner :announcements="props.announcements" />
+
         <!-- Search bar -->
         <SearchBar
           @search="handleSearch"
@@ -178,7 +181,7 @@
 
 <script setup>
 /* eslint-disable no-undef */
-import { ref, computed, onMounted } from 'vue'
+import { ref, computed, onMounted, watch } from 'vue'
 import { Activity, Timer, RefreshCw, AlertCircle, ChevronLeft, ChevronRight, ChevronDown, ChevronUp, CheckCircle } from 'lucide-vue-next'
 import { Button } from '@/components/ui/button'
 import EndpointCard from '@/components/EndpointCard.vue'
@@ -211,6 +214,23 @@ const groupByGroup = ref(false)
 const sortBy = ref(localStorage.getItem('gatus:sort-by') || 'name')
 const uncollapsedGroups = ref(new Set())
 
+function readBooleanFromLocalStorage(key, fallback) {
+  const v = localStorage.getItem(key)
+  if (v === null) return fallback
+  if (v === 'true' || v === '1') return true
+  if (v === 'false' || v === '0') return false
+  return fallback
+}
+
+const collapseByDefault = ref(
+  readBooleanFromLocalStorage(
+    'gatus:collapse',
+    (typeof window !== 'undefined' && typeof window.config?.defaultGroupCollapse !== 'undefined')
+      ? !!window.config.defaultGroupCollapse
+      : true
+  )
+)
+
 const filteredEndpoints = computed(() => {
   let filtered = [...endpointStatuses.value]
 
@@ -503,21 +523,32 @@ const toggleGroupCollapse = (groupName) => {
 }
 
 const initializeCollapsedGroups = () => {
-  // Get saved uncollapsed groups from localStorage
   try {
     const saved = localStorage.getItem('gatus:uncollapsed-groups')
     if (saved) {
       uncollapsedGroups.value = new Set(JSON.parse(saved))
+      return
     }
-    // If no saved state, uncollapsedGroups stays empty (all collapsed by default)
   } catch (e) {
     console.warn('Failed to parse saved uncollapsed groups:', e)
     localStorage.removeItem('gatus:uncollapsed-groups')
-    // On error, uncollapsedGroups stays empty (all collapsed by default)
+  }
+
+  if (!collapseByDefault.value) {
+    const groups = Object.keys(combinedGroups.value || {})
+    uncollapsedGroups.value = new Set(groups) // expanded by default
+  } else {
+    uncollapsedGroups.value = new Set() // collapsed by default
   }
 }
 
+watch(() => combinedGroups.value, () => {
+  if (!localStorage.getItem('gatus:uncollapsed-groups')) {
+    initializeCollapsedGroups()
+  }
+})
+
 onMounted(() => {
   fetchData()
 })
-</script>
+</script>
diff --git a/web/static/index.html b/web/static/index.html
@@ -1,4 +1,4 @@
-<!doctype html><html lang="en" class="{{ .Theme }}"><head><meta charset="utf-8"/><script>window.config = {logo: "{{ .UI.Logo }}", header: "{{ .UI.Header }}", link: "{{ .UI.Link }}", buttons: [], maximumNumberOfResults: "{{ .UI.MaximumNumberOfResults }}", defaultSortBy: "{{ .UI.DefaultSortBy }}", defaultFilterBy: "{{ .UI.DefaultFilterBy }}"};{{- range .UI.Buttons}}window.config.buttons.push({name:"{{ .Name }}",link:"{{ .Link }}"});{{end}}
+<!doctype html><html lang="en" class="{{ .Theme }}"><head><meta charset="utf-8"/><script>window.config = {logo: "{{ .UI.Logo }}", header: "{{ .UI.Header }}", link: "{{ .UI.Link }}", buttons: [], maximumNumberOfResults: "{{ .UI.MaximumNumberOfResults }}", defaultSortBy: "{{ .UI.DefaultSortBy }}", defaultFilterBy: "{{ .UI.DefaultFilterBy }}", defaultGroupCollapse: "{{ .UI.DefaultGroupCollapse }}"};{{- range .UI.Buttons}}window.config.buttons.push({name:"{{ .Name }}",link:"{{ .Link }}"});{{end}}
       // Initialize theme immediately to prevent flash
       (function() {
         const themeFromCookie = document.cookie.match(/theme=(dark|light);?/)?.[1];

diff --git a/web/static/js/app.js b/web/static/js/app.js