diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/actionlist/ActionListView.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/actionlist/ActionListView.kt
index 1e57de2466..92cfa91308 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/actionlist/ActionListView.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/actionlist/ActionListView.kt
@@ -48,6 +48,8 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.clearAndSetSemantics
+import androidx.compose.ui.semantics.contentDescription
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.PreviewParameter
@@ -371,7 +373,7 @@ private fun EmojiReactionsRow(
         ) {
             Icon(
                 resourceId = CommonDrawables.ic_add_reaction,
-                contentDescription = "Emojis",
+                contentDescription = stringResource(id = CommonStrings.a11y_react_with_other_emojis),
                 tint = MaterialTheme.colorScheme.secondary,
                 modifier = Modifier
                     .size(24.dp)
@@ -398,11 +400,18 @@ private fun EmojiButton(
     } else {
         Color.Transparent
     }
+    val description = if (isHighlighted) {
+        stringResource(id = CommonStrings.a11y_remove_reaction_with, emoji)
+    } else {
+        stringResource(id = CommonStrings.a11y_react_with, emoji)
+    }
     Box(
         modifier = modifier
             .size(48.dp)
-            .background(backgroundColor, CircleShape),
-
+            .background(backgroundColor, CircleShape)
+            .clearAndSetSemantics {
+                contentDescription = description
+            },
         contentAlignment = Alignment.Center
     ) {
         Text(
diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/LocalMediaView.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/LocalMediaView.kt
index 96e721e815..145b8ac56e 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/LocalMediaView.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/LocalMediaView.kt
@@ -44,6 +44,7 @@ import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalInspectionMode
 import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
@@ -69,6 +70,7 @@ import io.element.android.libraries.designsystem.utils.CommonDrawables
 import io.element.android.libraries.designsystem.utils.KeepScreenOn
 import io.element.android.libraries.designsystem.utils.OnLifecycleEvent
 import io.element.android.libraries.theme.ElementTheme
+import io.element.android.libraries.ui.strings.CommonStrings
 import me.saket.telephoto.zoomable.ZoomSpec
 import me.saket.telephoto.zoomable.ZoomableState
 import me.saket.telephoto.zoomable.coil.ZoomableAsyncImage
@@ -135,7 +137,7 @@ private fun MediaImageView(
             modifier = modifier.fillMaxSize(),
             state = zoomableImageState,
             model = localMedia?.uri,
-            contentDescription = "Image",
+            contentDescription = stringResource(id = CommonStrings.common_image),
             contentScale = ContentScale.Fit,
         )
     }
diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/pdf/PdfViewer.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/pdf/PdfViewer.kt
index 41a111d97d..9940d22542 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/pdf/PdfViewer.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/pdf/PdfViewer.kt
@@ -35,9 +35,11 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import io.element.android.libraries.designsystem.text.roundToPx
 import io.element.android.libraries.designsystem.text.toDp
+import io.element.android.libraries.ui.strings.CommonStrings
 import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.toImmutableList
 import me.saket.telephoto.zoomable.zoomable
@@ -98,7 +100,7 @@ private fun PdfPageView(
         is PdfPage.State.Loaded -> {
             Image(
                 bitmap = state.bitmap.asImageBitmap(),
-                contentDescription = "Page ${pdfPage.pageIndex}",
+                contentDescription = stringResource(id = CommonStrings.a11y_page_n, pdfPage.pageIndex),
                 contentScale = ContentScale.FillWidth,
                 modifier = modifier.fillMaxWidth()
             )
diff --git a/libraries/ui-strings/src/main/res/values/localazy.xml b/libraries/ui-strings/src/main/res/values/localazy.xml
index c2f969551c..4f18ef9c4a 100644
--- a/libraries/ui-strings/src/main/res/values/localazy.xml
+++ b/libraries/ui-strings/src/main/res/values/localazy.xml
@@ -4,19 +4,24 @@
   <string name="a11y_hide_password">"Hide password"</string>
   <string name="a11y_notifications_mentions_only">"Mentions only"</string>
   <string name="a11y_notifications_muted">"Muted"</string>
+  <string name="a11y_page_n">"Page %1$d"</string>
   <string name="a11y_pause">"Pause"</string>
   <string name="a11y_pin_field">"PIN field"</string>
   <string name="a11y_play">"Play"</string>
   <string name="a11y_poll">"Poll"</string>
   <string name="a11y_poll_end">"Ended poll"</string>
+  <string name="a11y_react_with">"React with %1$s"</string>
+  <string name="a11y_react_with_other_emojis">"React with other emojis"</string>
+  <string name="a11y_read_receipts_multiple">"Read by %1$s and %2$s"</string>
   <string name="a11y_read_receipts_single">"Read by %1$s"</string>
+  <string name="a11y_read_receipts_tap_to_show_all">"Tap to show all"</string>
+  <string name="a11y_remove_reaction_with">"Remove reaction with %1$s"</string>
   <string name="a11y_send_files">"Send files"</string>
   <string name="a11y_show_password">"Show password"</string>
   <string name="a11y_start_call">"Start a call"</string>
   <string name="a11y_user_menu">"User menu"</string>
   <string name="a11y_voice_message_record">"Record voice message."</string>
   <string name="a11y_voice_message_stop_recording">"Stop recording"</string>
-  <string name="a11y_read_receipts_multiple">"Read by %1$s and %2$s"</string>
   <string name="action_accept">"Accept"</string>
   <string name="action_add_to_timeline">"Add to timeline"</string>
   <string name="action_back">"Back"</string>