diff --git a/api/package.json b/api/package.json
index 0abb38ad..e3dde550 100644
--- a/api/package.json
+++ b/api/package.json
@@ -16,7 +16,7 @@
     "@data-fair/lib-common-types": "^1.21.0",
     "@data-fair/lib-express": "^1.23.0",
     "@data-fair/lib-node": "^2.12.1",
-    "@data-fair/lib-utils": "^1.12.1",
+    "@data-fair/lib-utils": "^1.12.2",
     "@data-fair/portals-shared-markdown": "*",
     "cheerio": "^1.0.0",
     "config": "^4.4.1",
diff --git a/package-lock.json b/package-lock.json
index d81d0d12..afc6b577 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -52,7 +52,7 @@
         "@data-fair/lib-common-types": "^1.21.0",
         "@data-fair/lib-express": "^1.23.0",
         "@data-fair/lib-node": "^2.12.1",
-        "@data-fair/lib-utils": "^1.12.1",
+        "@data-fair/lib-utils": "^1.12.2",
         "@data-fair/portals-shared-markdown": "*",
         "cheerio": "^1.0.0",
         "config": "^4.4.1",
@@ -1096,9 +1096,9 @@
       }
     },
     "node_modules/@data-fair/lib-utils": {
-      "version": "1.12.1",
-      "resolved": "https://registry.npmjs.org/@data-fair/lib-utils/-/lib-utils-1.12.1.tgz",
-      "integrity": "sha512-SHSDYik7cd2Rkk2zG9EcM9OlpLH8NcKKgXMY1v/0GtjZOdYsl8GMqDUUNTff4F75Gdhc0IP6eaSKkl+vgjZxaw==",
+      "version": "1.12.2",
+      "resolved": "https://registry.npmjs.org/@data-fair/lib-utils/-/lib-utils-1.12.2.tgz",
+      "integrity": "sha512-DO5x9f91kT6FabUYwIb9J/ls7fVd5R91NbRM15fftNvm4b6A1feGBodbydvHdd5WYNzpXyHyUAat62D8ZeHViw==",
       "license": "MIT",
       "peerDependencies": {
         "dayjs": "1"
@@ -1169,9 +1169,9 @@
       }
     },
     "node_modules/@data-fair/lib-vuetify": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/@data-fair/lib-vuetify/-/lib-vuetify-2.4.1.tgz",
-      "integrity": "sha512-g16v2tRt+v52CTJRn2efND4szst1evOqZxeyGpHWb59IyIV7GoPSpzR3zqJHpdaRIcqpSmTxbW/yXJcv061kDQ==",
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/@data-fair/lib-vuetify/-/lib-vuetify-2.4.2.tgz",
+      "integrity": "sha512-Sm31iRBtsgNVbpGurtgrApl9g75NWyy/cijMNyL+DjGYLaFZEliy5kfAGVGSVAw9+Krhf56fry5bxJwu9Am8Kw==",
       "license": "MIT",
       "dependencies": {
         "@data-fair/lib-common-types": "^1.10.4",
@@ -25198,10 +25198,10 @@
         "@data-fair/frame": "^0.18.1",
         "@data-fair/lib-common-types": "^1.21.0",
         "@data-fair/lib-node": "^2.12.1",
-        "@data-fair/lib-utils": "^1.12.1",
+        "@data-fair/lib-utils": "^1.12.2",
         "@data-fair/lib-vue": "^1.29.1",
         "@data-fair/lib-vue-agents": "^0.4.0",
-        "@data-fair/lib-vuetify": "^2.4.0",
+        "@data-fair/lib-vuetify": "^2.4.2",
         "@data-fair/lib-vuetify-agents": "^0.6.0",
         "@data-fair/lib-vuetify-events": "^0.3.0",
         "@data-fair/portals-shared-markdown": "*",
@@ -25226,7 +25226,7 @@
     "shared/markdown": {
       "name": "@data-fair/portals-shared-markdown",
       "dependencies": {
-        "@data-fair/lib-utils": "^1.12.1",
+        "@data-fair/lib-utils": "^1.12.2",
         "marked": "^15.0.12",
         "sanitize-html": "^2.17.0"
       }
@@ -25237,7 +25237,7 @@
         "@data-fair/lib-common-types": "^1.21.0",
         "@data-fair/lib-vue": "^1.29.1",
         "@data-fair/lib-vue-agents": "^0.4.0",
-        "@data-fair/lib-vuetify": "^2.4.0",
+        "@data-fair/lib-vuetify": "^2.4.2",
         "@data-fair/lib-vuetify-agents": "^0.6.0",
         "@data-fair/portals-shared-markdown": "*",
         "@intlify/unplugin-vue-i18n": "^11.0.7",
diff --git a/patches/README.md b/patches/README.md
index 6a254a4d..696792c8 100644
--- a/patches/README.md
+++ b/patches/README.md
@@ -114,6 +114,36 @@ stays valid.
 
 **Removal criterion**: when Vuetify stops emitting `aria-hidden="false"` on labels.
 
+### `lib/components/VImg/VImg.js` — W3C HTML validity for decorative images
+
+`VImg` mirrors its `alt` prop onto its root element, next to a `role` that is guarded on
+the same value:
+
+```js
+'aria-label': props.alt,
+role: props.alt ? 'img' : undefined
+```
+
+A decorative image is declared with `alt=""` — the empty string is falsy, so the root
+gets no role, but the attribute is still emitted and the element renders as
+`<div class="v-img" aria-label="">`. W3C rejects that: `aria-label` must not be used on
+a `div` whose role is `generic`. RGAA 8.2. Four occurrences on the portal visualisation
+catalogue (one per card thumbnail), twenty on a full catalogue page.
+
+This patch emits the attribute only when `alt` is non-empty (`props.alt || undefined`),
+the guard the neighbouring `role` binding already applies. Nothing changes for
+informative images: they keep `role="img"` and their label. Decorative ones lose an
+attribute that carried no name anyway — the inner `img` keeps its `alt=""`, which is
+what makes it decorative, so restitution is unchanged.
+
+There is no userland fix: the object holding `aria-label` is the last argument of the
+root's `mergeProps`, so it overrides any `aria-label` passed by the caller, and dropping
+the `alt` prop instead would leave the inner `img` without an `alt` attribute — one W3C
+error traded for another.
+
+**Removal criterion**: when Vuetify guards `aria-label` like it guards `role` — reported
+as vuetifyjs/vuetify#23111, fix proposed upstream in vuetifyjs/vuetify#23112.
+
 ### `lib/components/VSelect/VSelect.js` — W3C HTML validity for the hidden native select
 
 `VSelect` mirrors its items into a `<select hidden>` so the value is submitted with a
diff --git a/patches/vuetify+4.1.9.patch b/patches/vuetify+4.1.9.patch
index b48f5700..c9a8c709 100644
--- a/patches/vuetify+4.1.9.patch
+++ b/patches/vuetify+4.1.9.patch
@@ -105,6 +105,21 @@ index 5b75eb8..bef9f28 100644
          for: ariaHidden ? undefined : id.value
        };
      });
+diff --git a/node_modules/vuetify/lib/components/VImg/VImg.js b/node_modules/vuetify/lib/components/VImg/VImg.js
+index 7aab774..18ca7f3 100644
+--- a/node_modules/vuetify/lib/components/VImg/VImg.js
++++ b/node_modules/vuetify/lib/components/VImg/VImg.js
+@@ -295,7 +295,9 @@ export const VImg = genericComponent()({
+         }, backgroundColorStyles.value, roundedStyles.value, props.style]
+       }, responsiveProps, rootAttrs, {
+         "aspectRatio": aspectRatio.value,
+-        "aria-label": props.alt,
++        // an empty `alt` (decorative image) must not emit `aria-label`: the root would
++        // then carry it without a role, which W3C rejects (same guard as `role` below)
++        "aria-label": props.alt || undefined,
+         "role": props.alt ? 'img' : undefined
+       }), {
+         additional: () => _createElementVNode(_Fragment, null, [_createVNode(__image, imageAttrs, null), _createVNode(__preloadImage, null, null), _createVNode(__gradient, null, null), _createVNode(__placeholder, null, null), _createVNode(__error, null, null)]),
 diff --git a/node_modules/vuetify/lib/components/VSelect/VSelect.js b/node_modules/vuetify/lib/components/VSelect/VSelect.js
 index 42d2a00..08c6f77 100644
 --- a/node_modules/vuetify/lib/components/VSelect/VSelect.js
diff --git a/portal/app/components/error/error-forbidden.vue b/portal/app/components/error/error-forbidden.vue
index dad3a09f..457eaee3 100644
--- a/portal/app/components/error/error-forbidden.vue
+++ b/portal/app/components/error/error-forbidden.vue
@@ -4,6 +4,7 @@
     width="1145.57"
     height="819.91"
     viewBox="0 0 1145.57 819.91"
+    aria-hidden="true"
   >
     <path
       d="M1154.4,591.26c-26.57,54.81-80.52,91.46-136.43,115.63-75.27,32.55-158.16,45.46-239.91,40q-21.49-1.43-42.85-4.57a540.44,540.44,0,0,1-143.27-41.72q-19.74-8.89-38.68-19.41a494.85,494.85,0,0,1-60.46-39.54q-7.23-5.52-14.26-11.32c-3.25-2.68-6.47-5.42-9.74-8.08-6.9-5.61-14-10.94-21.92-14.93a78.31,78.31,0,0,0-7.34-3.24c-25.08-9.54-54-5.94-80.11,1.5-19.86,5.66-39.22,13.41-59.06,18.94a196,196,0,0,1-26.91,5.72A143.21,143.21,0,0,1,213,624.93l-1.67-.52q-4.2-1.32-8.33-2.89l-1.67-.64q-4-1.54-7.83-3.31l-1.67-.76q-4-1.86-7.83-3.93c-.92-.48-1.83-1-2.73-1.49a163.67,163.67,0,0,1-39.16-30.49c-.33-.33-.64-.67-1-1-1.59-1.72-3.15-3.47-4.66-5.26-.56-.66-1.12-1.32-1.67-2q-2.69-3.28-5.19-6.71c-.25-.33-.49-.67-.73-1A144.59,144.59,0,0,1,112,534.44c-.14-.33-.27-.67-.39-1q-2-5.15-3.65-10.47c-.45-1.48-.88-3-1.26-4.48-.13-.44-.25-.89-.36-1.33-5.52-21.73-6.15-44.32-6.15-66.78q0-3.93,0-7.85c.16-36.33.72-73.28,6.08-109.11,0-.25.07-.5.11-.74a340.76,340.76,0,0,1,7.31-35.82A264.25,264.25,0,0,1,126,260.56c12.33-29,30.26-55.39,50.17-79.85C226.32,119.16,292.09,67.49,369.07,48.15c82.95-20.83,175.14-.87,242.05,52.4,20.4,16.24,38.73,35.47,61.64,47.92,20,10.84,43.41,15.33,64.83,6.8,17.7-7.05,29.22-10.55,49.1-9.48A411.56,411.56,0,0,1,907.05,171c1.56.57,3.12,1.16,4.67,1.75C1012.43,211.28,1099,287.83,1144,386.2q1.79,3.9,3.47,7.86C1174.3,456.73,1184,530.18,1154.4,591.26Z"
diff --git a/portal/app/components/error/error-not-found.vue b/portal/app/components/error/error-not-found.vue
index 9dd94608..73452f77 100644
--- a/portal/app/components/error/error-not-found.vue
+++ b/portal/app/components/error/error-not-found.vue
@@ -4,6 +4,7 @@
     width="1074.392"
     height="584.231"
     viewBox="0 0 1074.392 584.231"
+    aria-hidden="true"
   >
     <ellipse
       cx="540.64346"
diff --git a/portal/app/components/error/error-server.vue b/portal/app/components/error/error-server.vue
index 23ddf48e..f329e5c4 100644
--- a/portal/app/components/error/error-server.vue
+++ b/portal/app/components/error/error-server.vue
@@ -4,6 +4,7 @@
     width="1032.24"
     height="832.63"
     viewBox="0 0 1032.24 832.63"
+    aria-hidden="true"
   >
     <ellipse
       cx="530.99"
diff --git a/portal/app/components/icon/icon-bluesky.vue b/portal/app/components/icon/icon-bluesky.vue
index 095f83d3..9b03718d 100644
--- a/portal/app/components/icon/icon-bluesky.vue
+++ b/portal/app/components/icon/icon-bluesky.vue
@@ -4,6 +4,7 @@
     width="24"
     height="24"
     viewBox="0 0 24 24"
+    aria-hidden="true"
   >
     <path
       fill="currentColor"
diff --git a/portal/app/components/icon/icon-x.vue b/portal/app/components/icon/icon-x.vue
index e0de0ece..0985c2f0 100644
--- a/portal/app/components/icon/icon-x.vue
+++ b/portal/app/components/icon/icon-x.vue
@@ -4,6 +4,7 @@
     width="24"
     height="24"
     viewBox="0 0 24 24"
+    aria-hidden="true"
   >
     <g fill="currentColor">
       <path d="M1 2h2.5L18.5 22h-2.5z" />
diff --git a/portal/app/components/layout/layout-full-app-bar.vue b/portal/app/components/layout/layout-full-app-bar.vue
index 8ee3fb92..46956408 100644
--- a/portal/app/components/layout/layout-full-app-bar.vue
+++ b/portal/app/components/layout/layout-full-app-bar.vue
@@ -4,11 +4,17 @@
     :color="portalConfig.navBar.color"
     flat
   >
-    <!-- Logo -->
+    <!--
+      Logo: hidden between the sm and md breakpoints, where it shares this fixed-height bar
+      with the breadcrumbs. A wide logo leaves too little room there and pushes the end of the
+      trail out of the window, with no way to scroll to it (RGAA 10.11 and 10.12). Below sm the
+      breadcrumbs are hidden, so the logo gets the bar back.
+    -->
     <layout-header-logo
       v-if="logo"
       :height="(appBarHeight || 64) - 10"
       :logo="logo"
+      class="d-sm-none d-md-flex"
     />
 
     <!-- Breadcrumbs -->
diff --git a/portal/app/components/layout/layout-personal-navigation.vue b/portal/app/components/layout/layout-personal-navigation.vue
index b35f11a6..05c16173 100644
--- a/portal/app/components/layout/layout-personal-navigation.vue
+++ b/portal/app/components/layout/layout-personal-navigation.vue
@@ -5,107 +5,184 @@
     :temporary="$vuetify.display.smAndDown"
     :permanent="!$vuetify.display.smAndDown"
   >
+    <!-- VList makes the list itself the only tab stop and gives items tabindex="-2",
+         reserving arrow keys for the menu pattern. A personal navigation is a
+         navigation, not a menu: the links carry the tab order (tabindex="0") and
+         the wrapper (tag="ul") is skipped. Same treatment as nav-drawer.vue. -->
     <v-list
+      id="sidebar-navigation"
       :bg-color="portalConfig.personal.navigationColor"
       class="pa-1"
+      :role="undefined"
+      tag="ul"
+      tabindex="-1"
+      style="list-style: none"
       nav
     >
-      <v-list-item
-        :title="portalConfig.title"
-        :prepend-avatar="ownerAvatar"
-        :subtitle="t('backToPortal')"
-        to="/"
-      />
-      <v-divider :style="navigationTextStyle" />
-      <v-list-subheader
-        :title="t('personalSpace')"
-        :style="navigationTextStyle"
-      />
+      <li>
+        <v-list-item
+          :prepend-avatar="ownerAvatar"
+          :subtitle="t('backToPortal')"
+          to="/"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ portalConfig.title }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
+      <li>
+        <v-divider :style="navigationTextStyle" />
+      </li>
+      <li>
+        <v-list-subheader
+          :title="t('personalSpace')"
+          :style="navigationTextStyle"
+        />
+      </li>
 
-      <v-list-item
-        :prepend-icon="mdiAccount"
-        :title="t('myAccount')"
-        to="/me/account"
-      />
-      <v-list-item
-        v-if="!portalConfig.personal.hidePages.includes('notifications')"
-        :prepend-icon="mdiBell"
-        :title="t('myNotifications')"
-        to="/me/notifications"
-      />
+      <li>
+        <v-list-item
+          :prepend-icon="mdiAccount"
+          to="/me/account"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ t('myAccount') }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
+      <li v-if="!portalConfig.personal.hidePages.includes('notifications')">
+        <v-list-item
+          :prepend-icon="mdiBell"
+          to="/me/notifications"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ t('myNotifications') }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
 
       <!-- Account switching -->
-      <v-select
-        v-if="accounts.length > 1"
-        :model-value="accountValue"
-        :label="t('activeAccount')"
-        :items="accounts"
-        class="my-2"
-        variant="outlined"
-        density="compact"
-        hide-details
-        @update:model-value="(val) => {
-          const [org, dep] = (val || '').split(':')
-          session.switchOrganization(org || null, dep)
-        }"
-      />
+      <li v-if="accounts.length > 1">
+        <v-select
+          :model-value="accountValue"
+          :label="t('activeAccount')"
+          :items="accounts"
+          class="my-2"
+          variant="outlined"
+          density="compact"
+          hide-details
+          @update:model-value="(val) => {
+            const [org, dep] = (val || '').split(':')
+            session.switchOrganization(org || null, dep)
+          }"
+        />
+      </li>
 
-      <v-list-item
-        v-if="session.account.value.type === 'organization' && !session.account.value.department && session.accountRole.value === 'admin'"
-        :prepend-icon="mdiAccountGroup"
-        :title="t('organizationManagement')"
-        to="/me/organization"
-      />
+      <li v-if="session.account.value.type === 'organization' && !session.account.value.department && session.accountRole.value === 'admin'">
+        <v-list-item
+          :prepend-icon="mdiAccountGroup"
+          to="/me/organization"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ t('organizationManagement') }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
 
-      <v-list-item
-        v-if="portalConfig.reuses?.allowUserReuses && !isPortalOwner"
-        :prepend-icon="mdiPageNext"
-        :title="t('myReuses')"
-        to="/me/reuses"
-      />
+      <li v-if="portalConfig.reuses?.allowUserReuses && !isPortalOwner">
+        <v-list-item
+          :prepend-icon="mdiPageNext"
+          to="/me/reuses"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ t('myReuses') }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
 
-      <v-list-item
-        v-if="!session.account.value.department && session.accountRole.value === 'admin' && !portalConfig.personal.hidePages.includes('api-keys')"
-        :prepend-icon="mdiCloudKey"
-        :title="t('apiKeys')"
-        to="/me/api-keys"
-      />
+      <li v-if="!session.account.value.department && session.accountRole.value === 'admin' && !portalConfig.personal.hidePages.includes('api-keys')">
+        <v-list-item
+          :prepend-icon="mdiCloudKey"
+          to="/me/api-keys"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ t('apiKeys') }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
 
-      <v-list-item
-        v-if="(datasetsCount.rest || datasetsCount.file) && !portalConfig.personal.hidePages.includes('contribute')"
-        :prepend-icon="mdiUpload"
-        :title="t('contribute')"
-        to="/me/update-dataset"
-      />
+      <li v-if="(datasetsCount.rest || datasetsCount.file) && !portalConfig.personal.hidePages.includes('contribute')">
+        <v-list-item
+          :prepend-icon="mdiUpload"
+          to="/me/update-dataset"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ t('contribute') }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
 
-      <v-list-item
-        v-if="processingsCount && !portalConfig.personal.hidePages.includes('processings')"
-        :prepend-icon="mdiCogTransferOutline"
-        :title="t('processings')"
-        to="/me/processings"
-      />
+      <li v-if="processingsCount && !portalConfig.personal.hidePages.includes('processings')">
+        <v-list-item
+          :prepend-icon="mdiCogTransferOutline"
+          to="/me/processings"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ t('processings') }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
 
-      <v-list-item
-        v-if="isPortalOwner"
-        :prepend-icon="mdiWrench"
-        :href="backOfficeUrl"
-        :title="t('backOffice')"
-      />
+      <li v-if="isPortalOwner">
+        <v-list-item
+          :prepend-icon="mdiWrench"
+          :href="backOfficeUrl"
+          :role="undefined"
+          tabindex="0"
+        >
+          <v-list-item-title class="text-wrap">
+            {{ t('backOffice') }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
 
-      <v-list-item
+      <li
         v-for="(page, p) in portalConfig.personal.accountPages"
         :key="p"
-        :to="'/me/' + page.id"
-        :title="page.title"
       >
-        <template #prepend>
-          <v-icon
-            v-if="page.icon && (page.icon.mdi?.svgPath || page.icon.custom)"
-            :icon="page.icon.mdi?.svgPath || page.icon.custom"
-            :color="page.icon.color"
-          />
-        </template>
-      </v-list-item>
+        <v-list-item
+          :to="'/me/' + page.id"
+          :role="undefined"
+          tabindex="0"
+        >
+          <template #prepend>
+            <v-icon
+              v-if="page.icon && (page.icon.mdi?.svgPath || page.icon.custom)"
+              :icon="page.icon.mdi?.svgPath || page.icon.custom"
+              :color="page.icon.color"
+            />
+          </template>
+          <v-list-item-title class="text-wrap">
+            {{ page.title }}
+          </v-list-item-title>
+        </v-list-item>
+      </li>
     </v-list>
 
     <!-- Copyright -->
@@ -118,6 +195,8 @@
         href="https://koumoul.com"
         target="_blank"
         rel="noopener"
+        :role="undefined"
+        tabindex="0"
       >
         <template #title>
           <span class="text-body-small">{{ t('publishYourData') }}</span>
diff --git a/portal/app/components/layout/layout-preview.vue b/portal/app/components/layout/layout-preview.vue
index a5210c20..df8d64ad 100644
--- a/portal/app/components/layout/layout-preview.vue
+++ b/portal/app/components/layout/layout-preview.vue
@@ -1,8 +1,10 @@
 <template>
+  <!-- aria-label: the dialog is rendered in a teleport, its visible title is not enough to name it -->
   <v-dialog
     v-model="dialog"
-    max-width="1200"
+    :aria-label="title"
     :fullscreen="$vuetify.display.smAndDown"
+    max-width="1200"
   >
     <template #activator="{ props }">
       <action-btn
@@ -26,6 +28,7 @@
           <template #append>
             <v-btn
               :icon="mdiClose"
+              :title="t('close')"
               @click="isActive.value = false"
             />
           </template>
@@ -59,6 +62,8 @@ const { trackDialog } = defineProps<{
   block?: boolean
 }>()
 
+const { t } = useI18n()
+
 const dialog = ref(false)
 
 if (trackDialog) {
@@ -67,3 +72,10 @@ if (trackDialog) {
   })
 }
 </script>
+
+<i18n lang="yaml">
+  en:
+    close: Close
+  fr:
+    close: Fermer
+</i18n>
diff --git a/portal/app/components/page-element/basic/page-element-contact.vue b/portal/app/components/page-element/basic/page-element-contact.vue
index 4aa1e3fe..29b97bdb 100644
--- a/portal/app/components/page-element/basic/page-element-contact.vue
+++ b/portal/app/components/page-element/basic/page-element-contact.vue
@@ -13,6 +13,7 @@
           <v-form
             ref="formRef"
             v-model="valid"
+            @submit.prevent="submitContact"
           >
             <v-text-field
               v-model="message.from"
@@ -105,9 +106,8 @@
                   :class="{ 'text-uppercase': buttonConfig?.uppercase }"
                   :style="btnHover.style(isHovering)"
                   :text="t('send')"
-                  :readonly="!valid"
                   :loading="sendMessage.loading.value"
-                  @click="sendMessage.execute()"
+                  type="submit"
                 >
                   <template
                     v-if="buttonConfig?.showIcon"
@@ -370,6 +370,11 @@ const sendMessage = useAsyncAction(async () => {
   success: t('messageSent'),
 })
 
+const submitContact = async () => {
+  const { valid: isValid } = await formRef.value.validate()
+  if (isValid) sendMessage.execute()
+}
+
 </script>
 
 <i18n lang="yaml">
diff --git a/portal/app/components/page-error.vue b/portal/app/components/page-error.vue
index dac8ae98..563ce9dd 100644
--- a/portal/app/components/page-error.vue
+++ b/portal/app/components/page-error.vue
@@ -6,6 +6,7 @@
           v-if="portalConfig.errorImages?.notFound"
           :src="getErrorImageSrc('notFound')"
           style="max-height: 300px; margin: auto"
+          alt=""
           aria-hidden="true"
         />
         <error-not-found
@@ -18,6 +19,7 @@
           v-if="portalConfig.errorImages?.forbidden"
           :src="getErrorImageSrc('forbidden')"
           style="max-height: 300px; margin: auto"
+          alt=""
           aria-hidden="true"
         />
         <error-forbidden
@@ -30,6 +32,7 @@
           v-if="portalConfig.errorImages?.fallback"
           :src="getErrorImageSrc('fallback')"
           style="max-height: 300px; margin: auto"
+          alt=""
           aria-hidden="true"
         />
         <error-server
diff --git a/portal/app/layouts/personal.vue b/portal/app/layouts/personal.vue
index 648f6f69..c95f9982 100644
--- a/portal/app/layouts/personal.vue
+++ b/portal/app/layouts/personal.vue
@@ -1,20 +1,33 @@
 <template>
   <ClientOnly>
+    <LayoutSkipLinks :targets="skipLinkTargets" />
     <LayoutPersonalNavigation />
     <LayoutPersonalAppBar />
     <v-main>
-      <v-container
-        fluid
-        class="pa-0 h-100"
+      <div
+        id="contenu"
+        tabindex="-1"
+        class="h-100"
       >
-        <slot />
-      </v-container>
+        <v-container
+          class="pa-0 h-100"
+          fluid
+        >
+          <slot />
+        </v-container>
+      </div>
     </v-main>
     <LayoutScrollToTop />
   </ClientOnly>
 </template>
 
 <script setup lang="ts">
+// The personal space has no footer (see the P15 dérogation), so only two targets.
+const skipLinkTargets = [
+  { id: 'contenu', labelKey: 'content' },
+  { id: 'sidebar-navigation', labelKey: 'sidebarNavigation' }
+]
+
 useHead({
   meta: [{ name: 'robots', content: 'noindex' }]
 })
diff --git a/portal/app/pages/me/[id].vue b/portal/app/pages/me/[id].vue
index 4816b179..af7ff27f 100644
--- a/portal/app/pages/me/[id].vue
+++ b/portal/app/pages/me/[id].vue
@@ -1,4 +1,11 @@
 <template>
+  <h1
+    v-if="page"
+    class="d-sr-only"
+  >
+    {{ page.title }}
+  </h1>
+
   <d-frame-wrapper
     v-if="page"
     :iframe-title="page.title"
diff --git a/portal/app/pages/me/account.vue b/portal/app/pages/me/account.vue
index f4fa491e..54e43714 100644
--- a/portal/app/pages/me/account.vue
+++ b/portal/app/pages/me/account.vue
@@ -1,4 +1,9 @@
 <template>
+  <!-- the embedded document starts its titles at h2: the h1 of the page belongs here -->
+  <h1 class="d-sr-only">
+    {{ t('myAccount') }}
+  </h1>
+
   <d-frame-wrapper
     :iframe-title="t('myAccount')"
     src="/simple-directory/me"
diff --git a/portal/app/pages/me/organization.vue b/portal/app/pages/me/organization.vue
index be451ee6..be7e5971 100644
--- a/portal/app/pages/me/organization.vue
+++ b/portal/app/pages/me/organization.vue
@@ -1,4 +1,8 @@
 <template>
+  <h1 class="d-sr-only">
+    {{ t('organization') }}
+  </h1>
+
   <!-- TODO: Add main redirect ? -->
   <d-frame-wrapper
     :iframe-title="t('organization')"
diff --git a/portal/app/pages/me/processings.vue b/portal/app/pages/me/processings.vue
index ac9f3df9..29bbaf98 100644
--- a/portal/app/pages/me/processings.vue
+++ b/portal/app/pages/me/processings.vue
@@ -1,4 +1,8 @@
 <template>
+  <h1 class="d-sr-only">
+    {{ t('processings') }}
+  </h1>
+
   <d-frame-wrapper
     :iframe-title="t('processings')"
     :src="`/processings/processings/?owner=${portalOwner}`"
diff --git a/portal/app/pages/me/reuses.vue b/portal/app/pages/me/reuses.vue
index 21b1a27e..9da3577c 100644
--- a/portal/app/pages/me/reuses.vue
+++ b/portal/app/pages/me/reuses.vue
@@ -1,4 +1,8 @@
 <template>
+  <h1 class="d-sr-only">
+    {{ t('myReuses') }}
+  </h1>
+
   <d-frame-wrapper
     :iframe-title="t('myReuses')"
     :adapter.prop="stateChangeAdapter"
diff --git a/portal/app/pages/me/update-dataset.vue b/portal/app/pages/me/update-dataset.vue
index 6bc3dd70..e10aa135 100644
--- a/portal/app/pages/me/update-dataset.vue
+++ b/portal/app/pages/me/update-dataset.vue
@@ -1,4 +1,8 @@
 <template>
+  <h1 class="d-sr-only">
+    {{ t('contribute') }}
+  </h1>
+
   <d-frame-wrapper
     :iframe-title="t('contribute')"
     :src="`/data-fair/embed/workflow/update-dataset?publicationSite=data-fair-portals:${portal._id}&owner=${portalOwner}`"
diff --git a/portal/package.json b/portal/package.json
index c9f06341..ab5dd39d 100644
--- a/portal/package.json
+++ b/portal/package.json
@@ -22,10 +22,10 @@
     "@data-fair/frame": "^0.18.1",
     "@data-fair/lib-common-types": "^1.21.0",
     "@data-fair/lib-node": "^2.12.1",
-    "@data-fair/lib-utils": "^1.12.1",
+    "@data-fair/lib-utils": "^1.12.2",
     "@data-fair/lib-vue": "^1.29.1",
     "@data-fair/lib-vue-agents": "^0.4.0",
-    "@data-fair/lib-vuetify": "^2.4.0",
+    "@data-fair/lib-vuetify": "^2.4.2",
     "@data-fair/lib-vuetify-agents": "^0.6.0",
     "@data-fair/lib-vuetify-events": "^0.3.0",
     "@data-fair/portals-shared-markdown": "*",
diff --git a/shared/markdown/package.json b/shared/markdown/package.json
index b41471e4..96a93bf0 100644
--- a/shared/markdown/package.json
+++ b/shared/markdown/package.json
@@ -3,7 +3,7 @@
   "type": "module",
   "main": "index.ts",
   "dependencies": {
-    "@data-fair/lib-utils": "^1.12.1",
+    "@data-fair/lib-utils": "^1.12.2",
     "marked": "^15.0.12",
     "sanitize-html": "^2.17.0"
   }
diff --git a/ui/package.json b/ui/package.json
index 573fc608..99bf2052 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -19,7 +19,7 @@
     "@data-fair/frame": "^0.18.1",
     "@data-fair/lib-common-types": "^1.21.0",
     "@data-fair/lib-vue": "^1.29.1",
-    "@data-fair/lib-vuetify": "^2.4.0",
+    "@data-fair/lib-vuetify": "^2.4.2",
     "@data-fair/portals-shared-markdown": "*",
     "@intlify/unplugin-vue-i18n": "^11.0.7",
     "@koumoul/vjsf": "^4.5.4",