diff --git a/src/lib/components/chat/Messages/OutputEditView.svelte b/src/lib/components/chat/Messages/OutputEditView.svelte
index 360152a124..29701ed4ce 100644
--- a/src/lib/components/chat/Messages/OutputEditView.svelte
+++ b/src/lib/components/chat/Messages/OutputEditView.svelte
@@ -335,6 +335,7 @@
 					<!-- Delete -->
 					<div class="pt-1.5">
 						<button
+							aria-label={$i18n.t('Delete')}
 							class="invisible group-hover:visible p-1 text-gray-400 dark:text-gray-500 hover:text-gray-600 dark:hover:text-gray-300 transition rounded-lg"
 							on:click={() => deleteIndices(di.indices)}
 						>
diff --git a/src/lib/components/chat/Messages/UserMessage.svelte b/src/lib/components/chat/Messages/UserMessage.svelte
index 47a7e90f98..02e542c589 100644
--- a/src/lib/components/chat/Messages/UserMessage.svelte
+++ b/src/lib/components/chat/Messages/UserMessage.svelte
@@ -218,6 +218,7 @@
 										</div>
 										<div class=" absolute -top-1 -right-1">
 											<button
+												aria-label={$i18n.t('Remove file')}
 												class=" bg-white text-black border border-white rounded-full {($settings?.highContrastMode ??
 												false)
 													? ''
@@ -432,6 +433,7 @@
 						{#if siblings.length > 1}
 							<div class="flex self-center" dir="ltr">
 								<button
+									aria-label={$i18n.t('Previous message')}
 									class="self-center p-1 hover:bg-black/5 dark:hover:bg-white/5 dark:hover:text-white hover:text-black rounded-md transition"
 									on:click={() => {
 										showPreviousMessage(message);
@@ -499,6 +501,7 @@
 								{/if}
 
 								<button
+									aria-label={$i18n.t('Next message')}
 									class="self-center p-1 hover:bg-black/5 dark:hover:bg-white/5 dark:hover:text-white hover:text-black rounded-md transition"
 									on:click={() => {
 										showNextMessage(message);
@@ -528,6 +531,7 @@
 								class="{($settings?.highContrastMode ?? false)
 									? ''
 									: 'invisible group-hover:visible'} p-1.5 hover:bg-black/5 dark:hover:bg-white/5 rounded-lg dark:hover:text-white hover:text-black transition edit-user-message-button"
+								aria-label={$i18n.t('Edit')}
 								on:click={() => {
 									editMessageHandler();
 								}}
@@ -556,6 +560,7 @@
 								class="{($settings?.highContrastMode ?? false)
 									? ''
 									: 'invisible group-hover:visible'} p-1.5 hover:bg-black/5 dark:hover:bg-white/5 rounded-lg dark:hover:text-white hover:text-black transition"
+								aria-label={$i18n.t('Copy')}
 								on:click={() => {
 									copyToClipboard(message.content);
 								}}
@@ -582,6 +587,7 @@
 						{#if !compactPreview && !readOnly && allowDelete && (!isFirstMessage || siblings.length > 1)}
 							<Tooltip content={$i18n.t('Delete')} placement="bottom">
 								<button
+									aria-label={$i18n.t('Delete')}
 									class="{($settings?.highContrastMode ?? false)
 										? ''
 										: 'invisible group-hover:visible'} p-1 rounded-sm dark:hover:text-white hover:text-black transition"
@@ -616,6 +622,7 @@
 						{#if siblings.length > 1}
 							<div class="flex self-center" dir="ltr">
 								<button
+									aria-label={$i18n.t('Previous message')}
 									class="self-center p-1 hover:bg-black/5 dark:hover:bg-white/5 dark:hover:text-white hover:text-black rounded-md transition"
 									on:click={() => {
 										showPreviousMessage(message);
@@ -683,6 +690,7 @@
 								{/if}
 
 								<button
+									aria-label={$i18n.t('Next message')}
 									class="self-center p-1 hover:bg-black/5 dark:hover:bg-white/5 dark:hover:text-white hover:text-black rounded-md transition"
 									on:click={() => {
 										showNextMessage(message);
diff --git a/src/lib/components/common/FileItemModal.svelte b/src/lib/components/common/FileItemModal.svelte
index bea40aa304..a41fbdbb67 100644
--- a/src/lib/components/common/FileItemModal.svelte
+++ b/src/lib/components/common/FileItemModal.svelte
@@ -595,6 +595,7 @@
 								{#if pptxSlides.length > 1}
 									<div class="flex items-center justify-center gap-3 pb-3 text-sm text-gray-500">
 										<button
+											aria-label={$i18n.t('Previous slide')}
 											class="p-1.5 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-800 disabled:opacity-30"
 											disabled={pptxCurrentSlide === 0}
 											on:click={() => (pptxCurrentSlide = Math.max(0, pptxCurrentSlide - 1))}
@@ -614,6 +615,7 @@
 										</button>
 										<span>{pptxCurrentSlide + 1} / {pptxSlides.length}</span>
 										<button
+											aria-label={$i18n.t('Next slide')}
 											class="p-1.5 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-800 disabled:opacity-30"
 											disabled={pptxCurrentSlide === pptxSlides.length - 1}
 											on:click={() =>
diff --git a/src/lib/components/common/ImagePreview.svelte b/src/lib/components/common/ImagePreview.svelte
index b8d4f1c1fd..d1186562cf 100644
--- a/src/lib/components/common/ImagePreview.svelte
+++ b/src/lib/components/common/ImagePreview.svelte
@@ -71,6 +71,7 @@
 
 			<div>
 				<button
+					aria-label={$i18n.t('Download')}
 					class=" p-5 z-999"
 					on:click={() => {
 						if (src.startsWith('data:image/')) {
diff --git a/src/lib/components/layout/ChatsModal.svelte b/src/lib/components/layout/ChatsModal.svelte
index 2de1a52686..26fa8c380f 100644
--- a/src/lib/components/layout/ChatsModal.svelte
+++ b/src/lib/components/layout/ChatsModal.svelte
@@ -107,6 +107,7 @@
 				{/if}
 			</div>
 			<button
+				aria-label={$i18n.t('Close')}
 				class="self-center rounded-lg p-1 text-gray-500 transition hover:bg-gray-50 hover:text-gray-700 dark:text-gray-400 dark:hover:bg-gray-800 dark:hover:text-gray-200"
 				on:click={() => {
 					show = false;
@@ -312,6 +313,7 @@
 												{#if unarchiveHandler}
 													<Tooltip content={$i18n.t('Unarchive Chat')}>
 														<button
+															aria-label={$i18n.t('Unarchive Chat')}
 															class="self-center w-fit px-1 text-sm rounded-xl"
 															on:click={async (e) => {
 																e.stopImmediatePropagation();
diff --git a/src/lib/components/layout/FilesModal.svelte b/src/lib/components/layout/FilesModal.svelte
index 568e446fbb..de0052be4d 100644
--- a/src/lib/components/layout/FilesModal.svelte
+++ b/src/lib/components/layout/FilesModal.svelte
@@ -216,6 +216,7 @@
 				{/if}
 			</div>
 			<button
+				aria-label={$i18n.t('Close')}
 				class="self-center rounded-lg p-1 text-gray-500 transition hover:bg-gray-50 hover:text-gray-700 dark:text-gray-400 dark:hover:bg-gray-800 dark:hover:text-gray-200"
 				on:click={() => {
 					show = false;
diff --git a/src/lib/components/layout/Sidebar/ChatItem.svelte b/src/lib/components/layout/Sidebar/ChatItem.svelte
index ae78ef905e..80dc97e5b5 100644
--- a/src/lib/components/layout/Sidebar/ChatItem.svelte
+++ b/src/lib/components/layout/Sidebar/ChatItem.svelte
@@ -730,6 +730,7 @@
 						<!-- Shortcut support using "delete-chat-button" id -->
 						<button
 							id="delete-chat-button"
+							aria-label={$i18n.t('Delete')}
 							class="hidden"
 							on:click={() => {
 								showDeleteConfirm = true;
diff --git a/src/lib/components/playground/Chat/Message.svelte b/src/lib/components/playground/Chat/Message.svelte
index 1fbb7ab9c5..9375992fef 100644
--- a/src/lib/components/playground/Chat/Message.svelte
+++ b/src/lib/components/playground/Chat/Message.svelte
@@ -53,6 +53,7 @@
 	<div class=" pt-1">
 		<button
 			class=" group-hover:text-gray-500 dark:text-gray-500 dark:hover:text-gray-300 transition"
+			aria-label={$i18n.t('Delete')}
 			on:click={() => {
 				onDelete();
 			}}
diff --git a/src/lib/components/playground/Images.svelte b/src/lib/components/playground/Images.svelte
index 9d7d4bb25c..cc8671170b 100644
--- a/src/lib/components/playground/Images.svelte
+++ b/src/lib/components/playground/Images.svelte
@@ -190,6 +190,7 @@
 										<button
 											class=" bg-white text-black border border-white rounded-full group-hover:visible invisible transition"
 											type="button"
+											aria-label={$i18n.t('Remove image')}
 											on:click={() => removeImage(index)}
 										>
 											<svg
diff --git a/src/lib/components/workspace/Knowledge/KnowledgeBase/AddContentMenu.svelte b/src/lib/components/workspace/Knowledge/KnowledgeBase/AddContentMenu.svelte
index 25f81f5369..af5e56c5ed 100644
--- a/src/lib/components/workspace/Knowledge/KnowledgeBase/AddContentMenu.svelte
+++ b/src/lib/components/workspace/Knowledge/KnowledgeBase/AddContentMenu.svelte
@@ -37,6 +37,7 @@
 	<Tooltip content={$i18n.t('Add Content')}>
 		<button
 			class="p-1.5 rounded-xl bg-transparent transition text-xs flex items-center space-x-1 hover:text-gray-900 dark:hover:text-gray-100"
+			aria-label={$i18n.t('Add Content')}
 			on:click={(e) => {
 				e.stopPropagation();
 				show = true;