diff --git a/apps/sim/app/(interfaces)/chat/components/input/input.tsx b/apps/sim/app/(interfaces)/chat/components/input/input.tsx
index e488f8a8ea9..4cb83962390 100644
--- a/apps/sim/app/(interfaces)/chat/components/input/input.tsx
+++ b/apps/sim/app/(interfaces)/chat/components/input/input.tsx
@@ -222,6 +222,7 @@ export const ChatInput: React.FC<{
               <Tooltip.Root>
                 <Tooltip.Trigger asChild>
                   <Button
+                    aria-label='Attach files'
                     variant='quiet'
                     onClick={() => fileInputRef.current?.click()}
                     disabled={isStreaming || attachedFiles.length >= 15}
diff --git a/apps/sim/app/(interfaces)/chat/components/message/components/file-download.tsx b/apps/sim/app/(interfaces)/chat/components/message/components/file-download.tsx
index 1a2c3b318ea..d643a8bb12e 100644
--- a/apps/sim/app/(interfaces)/chat/components/message/components/file-download.tsx
+++ b/apps/sim/app/(interfaces)/chat/components/message/components/file-download.tsx
@@ -250,6 +250,7 @@ export function ChatFileDownloadAll({ files }: ChatFileDownloadAllProps) {
   return (
     <div className='flex flex-col items-start gap-2'>
       <Button
+        aria-label='Download all files'
         variant='ghost-secondary'
         onClick={handleDownloadAll}
         disabled={isDownloading}
diff --git a/apps/sim/app/(interfaces)/chat/components/message/message.tsx b/apps/sim/app/(interfaces)/chat/components/message/message.tsx
index 8b4cd29647f..9458ed16be7 100644
--- a/apps/sim/app/(interfaces)/chat/components/message/message.tsx
+++ b/apps/sim/app/(interfaces)/chat/components/message/message.tsx
@@ -272,6 +272,7 @@ export const ClientChatMessage = memo(function ClientChatMessage({
                   <Tooltip.Root>
                     <Tooltip.Trigger asChild>
                       <Button
+                        aria-label={isCopied ? 'Copied!' : 'Copy to clipboard'}
                         variant='ghost-secondary'
                         className='p-0'
                         onClick={() => {
diff --git a/apps/sim/app/playground/page.tsx b/apps/sim/app/playground/page.tsx
index e07ffe5a381..fa5a295eacd 100644
--- a/apps/sim/app/playground/page.tsx
+++ b/apps/sim/app/playground/page.tsx
@@ -168,7 +168,12 @@ export default function PlaygroundPage() {
           <div className='absolute top-8 left-8 flex items-center gap-2'>
             <Tooltip.Root>
               <Tooltip.Trigger asChild>
-                <Button variant='ghost' onClick={() => router.back()} className='size-8 p-0'>
+                <Button
+                  aria-label='Go back'
+                  variant='ghost'
+                  onClick={() => router.back()}
+                  className='size-8 p-0'
+                >
                   <ArrowLeft className='size-4' />
                 </Button>
               </Tooltip.Trigger>
@@ -178,7 +183,12 @@ export default function PlaygroundPage() {
           <div className='absolute top-8 right-8'>
             <Tooltip.Root>
               <Tooltip.Trigger asChild>
-                <Button variant='default' onClick={toggleDarkMode} className='size-8 p-0'>
+                <Button
+                  aria-label={isDarkMode ? 'Light mode' : 'Dark mode'}
+                  variant='default'
+                  onClick={toggleDarkMode}
+                  className='size-8 p-0'
+                >
                   {isDarkMode ? <Sun className='size-4' /> : <Moon className='size-4' />}
                 </Button>
               </Tooltip.Trigger>
diff --git a/apps/sim/app/workspace/[workspaceId]/components/resource/components/action-bar/action-bar.tsx b/apps/sim/app/workspace/[workspaceId]/components/resource/components/action-bar/action-bar.tsx
index f928eec1c6b..7678123e352 100644
--- a/apps/sim/app/workspace/[workspaceId]/components/resource/components/action-bar/action-bar.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/components/resource/components/action-bar/action-bar.tsx
@@ -34,6 +34,7 @@ function ActionButton({ icon: Icon, label, onClick, disabled }: ActionButtonProp
     <Tooltip.Root>
       <Tooltip.Trigger asChild>
         <Button
+          aria-label={label}
           variant='ghost'
           onClick={onClick}
           disabled={disabled}
@@ -129,6 +130,7 @@ export function ResourceActionBar({
                 <Tooltip.Trigger asChild>
                   <DropdownMenuTrigger asChild>
                     <Button
+                      aria-label='Move'
                       variant='ghost'
                       disabled={actionsDisabled}
                       className={ACTION_BUTTON_CLASS}
diff --git a/apps/sim/app/workspace/[workspaceId]/components/resource/resource.tsx b/apps/sim/app/workspace/[workspaceId]/components/resource/resource.tsx
index cf548ac70e5..ff86f7371ea 100644
--- a/apps/sim/app/workspace/[workspaceId]/components/resource/resource.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/components/resource/resource.tsx
@@ -512,6 +512,7 @@ const Pagination = memo(function Pagination({
     <div className='flex items-center justify-center border-[var(--border)] border-t bg-[var(--bg)] px-4 py-2.5'>
       <div className='flex items-center gap-1'>
         <Button
+          aria-label='Previous page'
           variant='ghost'
           onClick={() => onPageChange(currentPage - 1)}
           disabled={currentPage <= 1}
@@ -548,6 +549,7 @@ const Pagination = memo(function Pagination({
           })}
         </div>
         <Button
+          aria-label='Next page'
           variant='ghost'
           onClick={() => onPageChange(currentPage + 1)}
           disabled={currentPage >= totalPages}
diff --git a/apps/sim/app/workspace/[workspaceId]/home/components/queued-messages/queued-messages.tsx b/apps/sim/app/workspace/[workspaceId]/home/components/queued-messages/queued-messages.tsx
index d5ee4c9a8db..466afe3e7de 100644
--- a/apps/sim/app/workspace/[workspaceId]/home/components/queued-messages/queued-messages.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/home/components/queued-messages/queued-messages.tsx
@@ -121,6 +121,7 @@ export function QueuedMessages({
                     <Tooltip.Root>
                       <Tooltip.Trigger asChild>
                         <button
+                          aria-label='Cancel edit'
                           type='button'
                           onClick={(e) => {
                             e.stopPropagation()
@@ -140,6 +141,7 @@ export function QueuedMessages({
                       <Tooltip.Root>
                         <Tooltip.Trigger asChild>
                           <button
+                            aria-label={isDispatching ? 'Sending now' : 'Edit queued message'}
                             type='button'
                             disabled={isDispatching}
                             onClick={(e) => {
@@ -159,6 +161,7 @@ export function QueuedMessages({
                       <Tooltip.Root>
                         <Tooltip.Trigger asChild>
                           <button
+                            aria-label='Send now'
                             type='button'
                             disabled={isDispatching}
                             onClick={(e) => {
@@ -178,6 +181,7 @@ export function QueuedMessages({
                       <Tooltip.Root>
                         <Tooltip.Trigger asChild>
                           <button
+                            aria-label='Remove from queue'
                             type='button'
                             onClick={(e) => {
                               e.stopPropagation()
diff --git a/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/[documentId]/components/document-tags-modal/document-tags-modal.tsx b/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/[documentId]/components/document-tags-modal/document-tags-modal.tsx
index 4096360c8a3..13819242fb2 100644
--- a/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/[documentId]/components/document-tags-modal/document-tags-modal.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/[documentId]/components/document-tags-modal/document-tags-modal.tsx
@@ -407,6 +407,7 @@ export function DocumentTagsModal({
                   </span>
                   <div className='flex shrink-0 items-center gap-1'>
                     <Button
+                      aria-label='Remove tag'
                       variant='ghost'
                       onClick={(e) => {
                         e.stopPropagation()
diff --git a/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/add-documents-modal/add-documents-modal.tsx b/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/add-documents-modal/add-documents-modal.tsx
index 56144f8dee7..f70b4f8c7ba 100644
--- a/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/add-documents-modal/add-documents-modal.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/add-documents-modal/add-documents-modal.tsx
@@ -203,6 +203,7 @@ export function AddDocumentsModal({
                         <>
                           {isFailed && (
                             <Button
+                              aria-label='Retry upload'
                               type='button'
                               variant='ghost'
                               className='size-4 p-0'
@@ -213,6 +214,7 @@ export function AddDocumentsModal({
                             </Button>
                           )}
                           <Button
+                            aria-label='Remove file'
                             type='button'
                             variant='ghost'
                             className='size-4 p-0'
diff --git a/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/base-tags-modal/base-tags-modal.tsx b/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/base-tags-modal/base-tags-modal.tsx
index f005dfb62b3..46163ac91ea 100644
--- a/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/base-tags-modal/base-tags-modal.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/base-tags-modal/base-tags-modal.tsx
@@ -293,6 +293,7 @@ export function BaseTagsModal({ open, onOpenChange, knowledgeBaseId }: BaseTagsM
                     </span>
                     <div className='flex shrink-0 items-center gap-1'>
                       <Button
+                        aria-label='Delete Tag'
                         variant='ghost'
                         onClick={(e) => {
                           e.stopPropagation()
diff --git a/apps/sim/app/workspace/[workspaceId]/knowledge/components/create-base-modal/create-base-modal.tsx b/apps/sim/app/workspace/[workspaceId]/knowledge/components/create-base-modal/create-base-modal.tsx
index d66fa33d6bf..8e44fa13a90 100644
--- a/apps/sim/app/workspace/[workspaceId]/knowledge/components/create-base-modal/create-base-modal.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/knowledge/components/create-base-modal/create-base-modal.tsx
@@ -550,6 +550,7 @@ export const CreateBaseModal = memo(function CreateBaseModal({
                           <Loader className='size-4 text-[var(--text-muted)]' animate />
                         ) : (
                           <Button
+                            aria-label='Remove file'
                             type='button'
                             variant='ghost'
                             className='size-4 p-0'
diff --git a/apps/sim/app/workspace/[workspaceId]/logs/components/log-details/components/trace-view/trace-view.tsx b/apps/sim/app/workspace/[workspaceId]/logs/components/log-details/components/trace-view/trace-view.tsx
index e97cc186c3f..913bb8dcb83 100644
--- a/apps/sim/app/workspace/[workspaceId]/logs/components/log-details/components/trace-view/trace-view.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/logs/components/log-details/components/trace-view/trace-view.tsx
@@ -505,6 +505,7 @@ function DetailCodeSection({
                 <Tooltip.Root>
                   <Tooltip.Trigger asChild>
                     <Button
+                      aria-label={copied ? 'Copied' : 'Copy'}
                       type='button'
                       variant='default'
                       onClick={(e) => {
@@ -525,6 +526,7 @@ function DetailCodeSection({
                 <Tooltip.Root>
                   <Tooltip.Trigger asChild>
                     <Button
+                      aria-label='Search'
                       type='button'
                       variant='default'
                       onClick={(e) => {
diff --git a/apps/sim/app/workspace/[workspaceId]/logs/components/log-details/log-details.tsx b/apps/sim/app/workspace/[workspaceId]/logs/components/log-details/log-details.tsx
index a5b8c8d77bb..782b40e7fa1 100644
--- a/apps/sim/app/workspace/[workspaceId]/logs/components/log-details/log-details.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/logs/components/log-details/log-details.tsx
@@ -169,6 +169,7 @@ export const WorkflowOutputSection = memo(
               <Tooltip.Root>
                 <Tooltip.Trigger asChild>
                   <Button
+                    aria-label={copied ? 'Copied' : 'Copy'}
                     type='button'
                     variant='default'
                     onClick={(e) => {
@@ -189,6 +190,7 @@ export const WorkflowOutputSection = memo(
               <Tooltip.Root>
                 <Tooltip.Trigger asChild>
                   <Button
+                    aria-label='Search'
                     type='button'
                     variant='default'
                     onClick={(e) => {
diff --git a/apps/sim/app/workspace/[workspaceId]/tables/[tableId]/components/workflow-sidebar/workflow-sidebar.tsx b/apps/sim/app/workspace/[workspaceId]/tables/[tableId]/components/workflow-sidebar/workflow-sidebar.tsx
index 03e835b4fb8..dc601cc599e 100644
--- a/apps/sim/app/workspace/[workspaceId]/tables/[tableId]/components/workflow-sidebar/workflow-sidebar.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/tables/[tableId]/components/workflow-sidebar/workflow-sidebar.tsx
@@ -718,6 +718,7 @@ export function WorkflowSidebarBody({
                       <Tooltip.Root>
                         <Tooltip.Trigger asChild>
                           <Button
+                            aria-label='Open workflow'
                             type='button'
                             variant='ghost'
                             onClick={() =>
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/action-bar/action-bar.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/action-bar/action-bar.tsx
index 68bbc204861..c42c236d1c3 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/action-bar/action-bar.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/action-bar/action-bar.tsx
@@ -508,6 +508,7 @@ export const ActionBar = memo(
               <Tooltip.Trigger asChild>
                 <span className='inline-flex'>
                   <Button
+                    aria-label={isEnabled ? 'Disable' : 'Enable'}
                     variant='ghost'
                     onClick={(e) => {
                       e.stopPropagation()
@@ -609,6 +610,7 @@ export const ActionBar = memo(
               <Tooltip.Trigger asChild>
                 <span className='inline-flex'>
                   <Button
+                    aria-label={isLocked ? 'Unlock' : 'Lock'}
                     variant='ghost'
                     onClick={(e) => {
                       e.stopPropagation()
@@ -640,6 +642,7 @@ export const ActionBar = memo(
               <Tooltip.Trigger asChild>
                 <span className='inline-flex'>
                   <Button
+                    aria-label='Duplicate'
                     variant='ghost'
                     onClick={(e) => {
                       e.stopPropagation()
@@ -667,6 +670,7 @@ export const ActionBar = memo(
               <Tooltip.Trigger asChild>
                 <span className='inline-flex'>
                   <Button
+                    aria-label='Remove from Subflow'
                     variant='ghost'
                     onClick={(e) => {
                       e.stopPropagation()
@@ -705,6 +709,7 @@ export const ActionBar = memo(
             <Tooltip.Trigger asChild>
               <span className='inline-flex'>
                 <Button
+                  aria-label='Delete'
                   variant='ghost'
                   onClick={(e) => {
                     e.stopPropagation()
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/chat/chat.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/chat/chat.tsx
index 1da08f3bc7a..11910e52fb7 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/chat/chat.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/chat/chat.tsx
@@ -135,6 +135,7 @@ function ChatFilePreview({ file, onRemove }: ChatFilePreviewProps) {
       )}
 
       <Button
+        aria-label='Remove file'
         variant='ghost'
         onClick={(event) => {
           event.stopPropagation()
@@ -950,6 +951,7 @@ export function Chat() {
           <Popover size='sm' open={moreMenuOpen} onOpenChange={setMoreMenuOpen}>
             <PopoverTrigger asChild>
               <Button
+                aria-label='Chat actions'
                 variant='ghost'
                 className='-m-1.5 p-1.5!'
                 onClick={(e) => e.stopPropagation()}
@@ -990,7 +992,12 @@ export function Chat() {
           </Popover>
 
           {/* Close button */}
-          <Button variant='ghost' className='-m-1.5 p-1.5!' onClick={handleClose}>
+          <Button
+            aria-label='Close chat'
+            variant='ghost'
+            className='-m-1.5 p-1.5!'
+            onClick={handleClose}
+          >
             <X className='size-[16px]' />
           </Button>
         </div>
@@ -1096,6 +1103,7 @@ export function Chat() {
 
                 {isStreaming ? (
                   <Button
+                    aria-label='Stop generation'
                     onClick={handleStopStreaming}
                     variant='ghost'
                     className='size-[22px] rounded-full bg-[#383838] p-0 transition-colors hover-hover:bg-[#575757] dark:bg-[#E0E0E0] dark:hover-hover:bg-[#CFCFCF]'
@@ -1104,6 +1112,7 @@ export function Chat() {
                   </Button>
                 ) : (
                   <Button
+                    aria-label='Send message'
                     onClick={handleSendMessage}
                     variant='ghost'
                     disabled={
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/components/versions.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/components/versions.tsx
index 5d8aa644638..262b23e208b 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/components/versions.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/components/versions.tsx
@@ -328,6 +328,7 @@ export function Versions({
                 <Tooltip.Root>
                   <Tooltip.Trigger asChild>
                     <Button
+                      aria-label={v.description ? 'Edit description' : 'Add description'}
                       variant='ghost'
                       className={cn(
                         'p-1!',
@@ -356,6 +357,7 @@ export function Versions({
                 >
                   <PopoverTrigger asChild>
                     <Button
+                      aria-label='Version actions'
                       variant='ghost'
                       className='p-1!'
                       disabled={isPromotingVersion}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/general.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/general.tsx
index d567007488d..edbdcb7b3ee 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/general.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/general.tsx
@@ -242,6 +242,7 @@ export function GeneralDeploy({
                 <Tooltip.Root>
                   <Tooltip.Trigger asChild>
                     <Button
+                      aria-label='See preview'
                       type='button'
                       variant='default'
                       onClick={() => setShowExpandedPreview(true)}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/file-upload/file-upload.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/file-upload/file-upload.tsx
index 4bfa6ac5db3..330a73b990b 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/file-upload/file-upload.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/file-upload/file-upload.tsx
@@ -209,6 +209,7 @@ function SingleFileSelector({
         }
       />
       <Button
+        aria-label='Remove file'
         type='button'
         variant='ghost'
         className='-translate-y-1/2 absolute top-1/2 right-[28px] z-10 size-6 p-0'
@@ -762,6 +763,7 @@ export function FileUpload({
           </span>
         </div>
         <Button
+          aria-label='Remove file'
           type='button'
           variant='ghost'
           className='-translate-y-1/2 absolute top-1/2 right-[4px] size-6 p-0'
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/selector-combobox/selector-combobox.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/selector-combobox/selector-combobox.tsx
index 27713248118..3130bf0f9ca 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/selector-combobox/selector-combobox.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/selector-combobox/selector-combobox.tsx
@@ -337,6 +337,7 @@ export function SelectorCombobox({
             />
             {showClearButton && (
               <Button
+                aria-label='Clear selection'
                 type='button'
                 variant='ghost'
                 className='-translate-y-1/2 absolute top-1/2 right-[28px] z-10 size-6 p-0'
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/table/table.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/table/table.tsx
index ccc4bd31a56..4b8823d4ee7 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/table/table.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/table/table.tsx
@@ -420,6 +420,7 @@ export function Table({
     !disabled && (
       <td className='w-0 p-0'>
         <Button
+          aria-label='Delete row'
           variant='ghost'
           className='-translate-y-1/2 absolute top-1/2 right-[8px] opacity-0 transition-opacity group-hover:opacity-100'
           onClick={() => handleDeleteRow(rowIndex)}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/sub-block.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/sub-block.tsx
index 2fd31809eac..a0c7fc1f22c 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/sub-block.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/sub-block.tsx
@@ -338,6 +338,7 @@ const renderLabel = (
                   placeholder='Generate with AI...'
                 />
                 <Button
+                  aria-label='Generate'
                   variant='primary'
                   disabled={!wandState.searchQuery.trim() || wandState.isStreaming}
                   onMouseDown={(e: React.MouseEvent) => {
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/editor.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/editor.tsx
index f24e926e2cd..8edfbb54b46 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/editor.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/editor.tsx
@@ -607,6 +607,7 @@ export function Editor() {
                             <Tooltip.Root>
                               <Tooltip.Trigger asChild>
                                 <Button
+                                  aria-label='Open workflow'
                                   type='button'
                                   variant='ghost'
                                   onClick={handleOpenChildWorkflow}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx
index 8cdecd5834c..d949d13af21 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx
@@ -741,7 +741,7 @@ export const Panel = memo(function Panel() {
             <div className='flex gap-1.5'>
               <DropdownMenu open={isMenuOpen} onOpenChange={setIsMenuOpen}>
                 <DropdownMenuTrigger asChild>
-                  <Button className='size-[30px] rounded-[5px]'>
+                  <Button aria-label='Workflow actions' className='size-[30px] rounded-[5px]'>
                     <MoreHorizontal className='size-[14px]' />
                   </Button>
                 </DropdownMenuTrigger>
@@ -801,6 +801,7 @@ export const Panel = memo(function Panel() {
                 </DropdownMenuContent>
               </DropdownMenu>
               <Button
+                aria-label={isChatOpen ? 'Close chat' : 'Open chat'}
                 className='size-[30px] rounded-[5px]'
                 variant={isChatOpen ? 'active' : 'default'}
                 onClick={() => setIsChatOpen(!isChatOpen)}
@@ -911,7 +912,12 @@ export const Panel = memo(function Panel() {
                     {copilotChatTitle || 'New Chat'}
                   </h2>
                   <div className='flex items-center gap-2'>
-                    <Button variant='ghost' className='p-0' onClick={handleCopilotNewChat}>
+                    <Button
+                      aria-label='New Chat'
+                      variant='ghost'
+                      className='p-0'
+                      onClick={handleCopilotNewChat}
+                    >
                       <Plus className='size-[14px]' />
                     </Button>
                     <DropdownMenu
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/search-replace/workflow-search-replace.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/search-replace/workflow-search-replace.tsx
index 48faf7f8911..ef9454ddb5b 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/search-replace/workflow-search-replace.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/search-replace/workflow-search-replace.tsx
@@ -577,7 +577,12 @@ function WorkflowSearchReplacePanel({ focusRef }: WorkflowSearchReplacePanelProp
           onMouseDown={(event) => event.stopPropagation()}
         >
           <span className='text-[var(--text-muted)] text-xs'>{matchCountLabel}</span>
-          <Button variant='ghost' className='size-[26px] p-0' onClick={close}>
+          <Button
+            aria-label='Close search'
+            variant='ghost'
+            className='size-[26px] p-0'
+            onClick={close}
+          >
             <X className='size-[14px]' />
           </Button>
         </div>
@@ -609,6 +614,7 @@ function WorkflowSearchReplacePanel({ focusRef }: WorkflowSearchReplacePanelProp
           onChange={(event) => setQuery(event.target.value)}
         />
         <Button
+          aria-label='Previous match'
           variant='ghost'
           className='size-8 p-0'
           disabled={hydratedMatches.length === 0}
@@ -617,6 +623,7 @@ function WorkflowSearchReplacePanel({ focusRef }: WorkflowSearchReplacePanelProp
           <ChevronUp className='size-[14px] text-[var(--text-icon)]' />
         </Button>
         <Button
+          aria-label='Next match'
           variant='ghost'
           className='size-8 p-0'
           disabled={hydratedMatches.length === 0}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/workflow-controls/workflow-controls.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/workflow-controls/workflow-controls.tsx
index 2b93e5a848c..82974257851 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/workflow-controls/workflow-controls.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/workflow-controls/workflow-controls.tsx
@@ -109,7 +109,11 @@ export const WorkflowControls = memo(function WorkflowControls() {
             <PopoverTrigger asChild>
               <div className='flex cursor-pointer items-center gap-1'>
                 <Tooltip.Trigger asChild>
-                  <Button className='size-[28px] rounded-sm p-0' variant='active'>
+                  <Button
+                    aria-label={mode === 'hand' ? 'Mover' : 'Pointer'}
+                    className='size-[28px] rounded-sm p-0'
+                    variant='active'
+                  >
                     {mode === 'hand' ? (
                       <Hand className='size-[14px]' />
                     ) : (
@@ -118,6 +122,7 @@ export const WorkflowControls = memo(function WorkflowControls() {
                   </Button>
                 </Tooltip.Trigger>
                 <Button
+                  aria-label='Change canvas mode'
                   variant='ghost'
                   className={cn('size-[20px] rounded-sm p-0', chipHoverSurfaceClass)}
                 >
@@ -156,6 +161,7 @@ export const WorkflowControls = memo(function WorkflowControls() {
         <Tooltip.Root>
           <Tooltip.Trigger asChild>
             <Button
+              aria-label='Undo'
               variant='ghost'
               className={cn('size-[28px] rounded-sm p-0', chipHoverSurfaceClass)}
               onClick={undo}
@@ -172,6 +178,7 @@ export const WorkflowControls = memo(function WorkflowControls() {
         <Tooltip.Root>
           <Tooltip.Trigger asChild>
             <Button
+              aria-label='Redo'
               variant='ghost'
               className={cn('size-[28px] rounded-sm p-0', chipHoverSurfaceClass)}
               onClick={redo}
@@ -190,6 +197,7 @@ export const WorkflowControls = memo(function WorkflowControls() {
         <Tooltip.Root>
           <Tooltip.Trigger asChild>
             <Button
+              aria-label='Fit to View'
               variant='ghost'
               className={cn('size-[28px] rounded-sm p-0', chipHoverSurfaceClass)}
               onClick={handleFitToView}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/preview/components/preview-editor/preview-editor.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/preview/components/preview-editor/preview-editor.tsx
index 0a3654a72ac..6746778855d 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/preview/components/preview-editor/preview-editor.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/preview/components/preview-editor/preview-editor.tsx
@@ -1068,7 +1068,12 @@ function PreviewEditorContent({
           <BlockTile blockType={block.type} size='lg' />
           <OverflowText label={subflowName} className='flex-1 text-[var(--text-primary)] text-sm' />
           {onClose && (
-            <Button variant='ghost' className='shrink-0 p-1!' onClick={onClose}>
+            <Button
+              aria-label='Close preview'
+              variant='ghost'
+              className='shrink-0 p-1!'
+              onClick={onClose}
+            >
               <X className='size-[14px]' />
             </Button>
           )}
@@ -1155,7 +1160,12 @@ function PreviewEditorContent({
           className='flex-1 text-[var(--text-primary)] text-sm'
         />
         {onClose && (
-          <Button variant='ghost' className='shrink-0 p-1!' onClick={onClose}>
+          <Button
+            aria-label='Close preview'
+            variant='ghost'
+            className='shrink-0 p-1!'
+            onClick={onClose}
+          >
             <X className='size-[14px]' />
           </Button>
         )}
@@ -1224,6 +1234,7 @@ function PreviewEditorContent({
                       <Tooltip.Root>
                         <Tooltip.Trigger asChild>
                           <Button
+                            aria-label={copiedSection === 'input' ? 'Copied' : 'Copy'}
                             type='button'
                             variant='ghost'
                             onClick={(e) => {
@@ -1246,6 +1257,7 @@ function PreviewEditorContent({
                       <Tooltip.Root>
                         <Tooltip.Trigger asChild>
                           <Button
+                            aria-label='Search'
                             type='button'
                             variant='ghost'
                             onClick={(e) => {
@@ -1296,6 +1308,7 @@ function PreviewEditorContent({
                       <Tooltip.Root>
                         <Tooltip.Trigger asChild>
                           <Button
+                            aria-label={copiedSection === 'output' ? 'Copied' : 'Copy'}
                             type='button'
                             variant='ghost'
                             onClick={(e) => {
@@ -1318,6 +1331,7 @@ function PreviewEditorContent({
                       <Tooltip.Root>
                         <Tooltip.Trigger asChild>
                           <Button
+                            aria-label='Search'
                             type='button'
                             variant='ghost'
                             onClick={(e) => {
@@ -1374,6 +1388,11 @@ function PreviewEditorContent({
                         <Tooltip.Root>
                           <Tooltip.Trigger asChild>
                             <Button
+                              aria-label={
+                                isExecutionMode && onDrillDown
+                                  ? 'Expand workflow'
+                                  : 'Open in new tab'
+                              }
                               type='button'
                               variant='ghost'
                               onClick={handleExpandChildWorkflow}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/help-modal/help-modal.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/help-modal/help-modal.tsx
index 635ffebb475..33ec2732321 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/help-modal/help-modal.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/help-modal/help-modal.tsx
@@ -328,6 +328,7 @@ export function HelpModal({ open, onOpenChange, workflowId, workspaceId }: HelpM
                         className='object-contain'
                       />
                       <button
+                        aria-label='Remove image'
                         type='button'
                         className='absolute inset-0 flex items-center justify-center bg-black/50 opacity-0 transition-opacity group-hover:opacity-100'
                         onClick={() => removeImage(index)}
diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/sidebar.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/sidebar.tsx
index 98b1c4a670c..947d94305e5 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/sidebar.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/sidebar/sidebar.tsx
@@ -1646,6 +1646,7 @@ export const Sidebar = memo(function Sidebar() {
                                 <Tooltip.Trigger asChild>
                                   <DropdownMenuTrigger asChild>
                                     <Button
+                                      aria-label='More actions'
                                       variant='quiet'
                                       size='icon'
                                       disabled={!permissionsLoading && !canEdit}
@@ -1686,6 +1687,9 @@ export const Sidebar = memo(function Sidebar() {
                             <Tooltip.Root>
                               <Tooltip.Trigger asChild>
                                 <Button
+                                  aria-label={
+                                    isCreatingWorkflow ? 'Creating workflow...' : 'New workflow'
+                                  }
                                   variant='quiet'
                                   size='icon'
                                   onClick={handleCreateWorkflow}
diff --git a/apps/sim/ee/custom-blocks/components/custom-block-detail.tsx b/apps/sim/ee/custom-blocks/components/custom-block-detail.tsx
index 6ee3c467b1e..ac56a55b105 100644
--- a/apps/sim/ee/custom-blocks/components/custom-block-detail.tsx
+++ b/apps/sim/ee/custom-blocks/components/custom-block-detail.tsx
@@ -523,6 +523,7 @@ export function CustomBlockDetail({ blockId, workspaceId, onBack }: CustomBlockD
             <div className='flex items-center gap-4'>
               <DropZone onDrop={canManageBlock ? iconUpload.handleFileDrop : () => {}}>
                 <button
+                  aria-label={iconUrl ? 'Change icon' : 'Upload icon'}
                   type='button'
                   onClick={iconUpload.handleThumbnailClick}
                   disabled={iconUpload.isUploading || !canManageBlock}
diff --git a/packages/workflow-renderer/src/edge/workflow-edge-view.tsx b/packages/workflow-renderer/src/edge/workflow-edge-view.tsx
index 618304fa36b..bfac19a23e1 100644
--- a/packages/workflow-renderer/src/edge/workflow-edge-view.tsx
+++ b/packages/workflow-renderer/src/edge/workflow-edge-view.tsx
@@ -277,6 +277,7 @@ export function WorkflowEdgeView({
       {isSelected && (
         <EdgeLabelRenderer>
           <button
+            aria-label='Delete connection'
             type='button'
             className='nodrag nopan group flex size-[22px] cursor-pointer items-center justify-center transition-colors'
             style={{