diff --git a/libraries/src/MVC/View/FormView.php b/libraries/src/MVC/View/FormView.php
index 6591073732f40..234fecd2e7851 100644
--- a/libraries/src/MVC/View/FormView.php
+++ b/libraries/src/MVC/View/FormView.php
@@ -334,8 +334,12 @@ function (Toolbar $childBar) use ($checkedOut, $itemEditable, $canDo, $user, $vi
 
             if ($formConfig && (string) $formConfig['button'] === 'show') {
                 $targetClass = (string) $formConfig['targetclass'] ?: 'hide-aware-inline-help';
+                $storage     = (string) $formConfig['storage'];
+                $button      = $toolbar->inlinehelp($targetClass);
 
-                $toolbar->inlinehelp($targetClass);
+                if ($storage !== '') {
+                    $button->storage($storage);
+                }
             }
         }
 
diff --git a/libraries/src/Toolbar/Button/InlinehelpButton.php b/libraries/src/Toolbar/Button/InlinehelpButton.php
index 13bca5c6680a0..1ec57462d5b5a 100644
--- a/libraries/src/Toolbar/Button/InlinehelpButton.php
+++ b/libraries/src/Toolbar/Button/InlinehelpButton.php
@@ -18,6 +18,8 @@
  *
  * @method self targetclass(string $value)
  * @method string getTargetclass()
+ * @method self storage(string $value)
+ * @method string getStorage()
  *
  * @since  4.1.0
  */
@@ -53,6 +55,10 @@ protected function prepareOptions(array &$options)
             ]
         );
 
+        if (!empty($options['storage'])) {
+            $options['attributes']['data-storage'] = $options['storage'];
+        }
+
         parent::prepareOptions($options);
     }
 
@@ -101,6 +107,7 @@ protected static function getAccessors(): array
             parent::getAccessors(),
             [
                 'targetclass',
+                'storage',
             ]
         );
     }
diff --git a/media_source/system/js/inlinehelp.es6.js b/media_source/system/js/inlinehelp.es6.js
index 4579a427baa07..5a62fa67272fb 100644
--- a/media_source/system/js/inlinehelp.es6.js
+++ b/media_source/system/js/inlinehelp.es6.js
@@ -35,6 +35,66 @@ Joomla.toggleInlineHelp = (toggleClass) => {
   });
 };
 
+/**
+ * The localStorage key remembering the inline help state of one page.
+ *
+ * @param {String} toggleClass The class name of the DIVs the toggler controls
+ *
+ * @return {String}
+ */
+const inlineHelpStorageKey = (toggleClass) => `joomla.inlinehelp.${toggleClass}.${window.location.pathname}${window.location.search}`;
+
+/**
+ * Whether the inline help was left visible on this page.
+ *
+ * @param {String} key The storage key
+ *
+ * @return {Boolean}
+ */
+const inlineHelpStored = (key) => {
+  try {
+    return window.localStorage.getItem(key) === '1';
+  } catch (error) {
+    return false;
+  }
+};
+
+/**
+ * Remembers the inline help state of this page. Only the visible state is stored, as hidden is the default.
+ *
+ * @param {String}  key     The storage key
+ * @param {Boolean} visible Whether the inline help is visible
+ */
+const inlineHelpStore = (key, visible) => {
+  try {
+    if (visible) {
+      window.localStorage.setItem(key, '1');
+    } else {
+      window.localStorage.removeItem(key);
+    }
+  } catch (error) {
+    // Storage unavailable (private mode, blocked site data): keep the default behaviour.
+  }
+};
+
+// The classes whose remembered state was already restored, so that two togglers do not cancel each other out.
+const inlineHelpRestored = new Set();
+
+/**
+ * Shows the inline help state on every toggler of a class: `inlinehelp-active` and `aria-pressed` follow the visibility.
+ *
+ * @param {String}  toggleClass The class name of the DIVs the togglers control
+ * @param {Boolean} visible     Whether the inline help is visible
+ */
+const inlineHelpPressed = (toggleClass, visible) => {
+  document.querySelectorAll('.button-inlinehelp').forEach((elToggler) => {
+    if ((elToggler.dataset.class ?? 'hide-aware-inline-help') === toggleClass) {
+      elToggler.classList.toggle('inlinehelp-active', visible);
+      elToggler.setAttribute('aria-pressed', visible ? 'true' : 'false');
+    }
+  });
+};
+
 // Initialisation. Clicking on anything with the button-inlinehelp class will toggle the inline help.
 document.querySelectorAll('.button-inlinehelp').forEach((elToggler) => {
   // The class of the DIVs to toggle visibility on is defined by the data-class attribute of the click target.
@@ -47,9 +107,29 @@ document.querySelectorAll('.button-inlinehelp').forEach((elToggler) => {
     return;
   }
 
+  // The state is remembered only when the form asks for it with storage="local".
+  const storageKey = elToggler.dataset.storage === 'local' ? inlineHelpStorageKey(toggleClass) : null;
+
+  if (storageKey && !inlineHelpRestored.has(toggleClass)) {
+    inlineHelpRestored.add(toggleClass);
+
+    if (inlineHelpStored(storageKey)) {
+      Joomla.toggleInlineHelp(toggleClass);
+    }
+
+    inlineHelpPressed(toggleClass, !collection[0].classList.contains('d-none'));
+  }
+
   // Add the click handler.
   elToggler.addEventListener('click', (event) => {
     event.preventDefault();
     Joomla.toggleInlineHelp(toggleClass);
+
+    if (storageKey) {
+      const visible = !collection[0].classList.contains('d-none');
+
+      inlineHelpStore(storageKey, visible);
+      inlineHelpPressed(toggleClass, visible);
+    }
   });
 });
diff --git a/media_source/templates/administrator/atum/scss/blocks/_toolbar.scss b/media_source/templates/administrator/atum/scss/blocks/_toolbar.scss
index cbaac9123cf91..727326b6e1e68 100644
--- a/media_source/templates/administrator/atum/scss/blocks/_toolbar.scss
+++ b/media_source/templates/administrator/atum/scss/blocks/_toolbar.scss
@@ -59,7 +59,8 @@
 
     &:not([disabled]):hover,
     &:not([disabled]):active,
-    &:not([disabled]):focus {
+    &:not([disabled]):focus,
+    &.inlinehelp-active {
       color: var(--atum-btn-hvr);
       background-color: var(--subhead-btn-bg-hvr);
       border: var(--subhead-btn-border);
@@ -69,6 +70,16 @@
       }
     }
 
+    // A toggle switched off keeps focus after the click; without this it would still look pressed.
+    &[data-storage]:not(.inlinehelp-active):focus:not(:hover) {
+      color: var(--atum-btn);
+      background-color: var(--subhead-btn-bg);
+
+      > span {
+        color: var(--subhead-btn-icon);
+      }
+    }
+
     &.btn-success {
       --subhead-btn-icon: var(--atum-btn-success-icon);
       --subhead-btn-icon-hover: var(--atum-btn-success-icon-hvr);