diff --git a/src/components/bookmarks/BookmarkItem.jsx b/src/components/bookmarks/BookmarkItem.jsx
index 983c1bb..852b7cc 100644
--- a/src/components/bookmarks/BookmarkItem.jsx
+++ b/src/components/bookmarks/BookmarkItem.jsx
@@ -1,8 +1,8 @@
 import { forwardRef } from 'react'
-import { Pencil, Trash } from '../ui/Icons'
+import { Pencil, Trash, Square, CheckSquare } from '../ui/Icons'
 
 export const BookmarkItem = forwardRef(function BookmarkItem(
-  { bookmark, isSelected, onEdit, onDelete, onTagClick },
+  { bookmark, isSelected, isChecked, selectionMode, onEdit, onDelete, onTagClick, onToggleSelect },
   ref
 ) {
   const { title, url, tags } = bookmark
@@ -16,20 +16,51 @@ export const BookmarkItem = forwardRef(function BookmarkItem(
 
   const faviconUrl = `https://www.google.com/s2/favicons?domain=${domain}&sz=32`
 
+  const handleClick = (e) => {
+    if (selectionMode) {
+      e.preventDefault()
+      onToggleSelect?.(bookmark._id)
+    } else if (e.shiftKey) {
+      e.preventDefault()
+      onToggleSelect?.(bookmark._id, true)
+    }
+  }
+
   return (
     <div
       ref={ref}
-      className={`group flex items-center gap-3 px-3 py-2.5 rounded-md transition-all duration-200 cursor-default ${
-        isSelected
-          ? 'bg-accent ring-1 ring-ring'
-          : 'hover:bg-accent/50'
+      onClick={handleClick}
+      className={`group flex items-center gap-3 px-3 py-2.5 rounded-md transition-all duration-200 ${
+        selectionMode ? 'cursor-pointer' : 'cursor-default'
+      } ${
+        isChecked
+          ? 'bg-primary/10 ring-1 ring-primary/30'
+          : isSelected
+            ? 'bg-accent ring-1 ring-ring'
+            : 'hover:bg-accent/50'
       }`}
     >
-      <img 
-        src={faviconUrl} 
-        alt="" 
-        className="w-4 h-4 rounded-[3px] flex-shrink-0 opacity-70 group-hover:opacity-100 transition-opacity" 
-        onError={(e) => { e.target.style.opacity = 0 }} 
+      {selectionMode && (
+        <button
+          onClick={(e) => {
+            e.stopPropagation()
+            onToggleSelect?.(bookmark._id)
+          }}
+          className="flex-shrink-0 text-muted-foreground hover:text-foreground transition-colors"
+        >
+          {isChecked ? (
+            <CheckSquare className="w-4 h-4 text-primary" strokeWidth={1.5} />
+          ) : (
+            <Square className="w-4 h-4" strokeWidth={1.5} />
+          )}
+        </button>
+      )}
+
+      <img
+        src={faviconUrl}
+        alt=""
+        className="w-4 h-4 rounded-[3px] flex-shrink-0 opacity-70 group-hover:opacity-100 transition-opacity"
+        onError={(e) => { e.target.style.opacity = 0 }}
       />
 
       <div className="flex-1 min-w-0 overflow-hidden">
@@ -38,13 +69,14 @@ export const BookmarkItem = forwardRef(function BookmarkItem(
             href={url}
             target="_blank"
             rel="noopener noreferrer"
+            onClick={(e) => selectionMode && e.preventDefault()}
             className="font-medium text-sm text-foreground truncate hover:text-primary transition-colors"
           >
             {title}
           </a>
           <span className="text-xs text-muted-foreground truncate flex-shrink-0 font-normal">{domain}</span>
         </div>
-        
+
         {tags && tags.length > 0 && (
           <div className="flex gap-1.5 mt-1">
             {tags.map((tag) => (
@@ -52,7 +84,9 @@ export const BookmarkItem = forwardRef(function BookmarkItem(
                 key={tag}
                 onClick={(e) => {
                   e.stopPropagation()
-                  onTagClick && onTagClick(tag)
+                  if (!selectionMode) {
+                    onTagClick && onTagClick(tag)
+                  }
                 }}
                 className="text-[10px] leading-tight px-1.5 py-0.5 rounded-[3px] bg-secondary text-secondary-foreground hover:text-primary hover:bg-accent cursor-pointer transition-colors"
               >
@@ -63,22 +97,24 @@ export const BookmarkItem = forwardRef(function BookmarkItem(
         )}
       </div>
 
-      <div className="flex items-center gap-0.5 opacity-100 md:opacity-0 md:group-hover:opacity-100 transition-opacity">
-        <button
-          onClick={() => onEdit(bookmark)}
-          className="p-1.5 text-muted-foreground hover:text-foreground hover:bg-accent rounded-md transition-colors"
-          title="Edit"
-        >
-          <Pencil className="w-3.5 h-3.5" strokeWidth={1.5} />
-        </button>
-        <button
-          onClick={() => onDelete(bookmark._id)}
-          className="p-1.5 text-muted-foreground hover:text-destructive hover:bg-destructive/10 rounded-md transition-colors"
-          title="Delete"
-        >
-          <Trash className="w-3.5 h-3.5" strokeWidth={1.5} />
-        </button>
-      </div>
+      {!selectionMode && (
+        <div className="flex items-center gap-0.5 opacity-100 md:opacity-0 md:group-hover:opacity-100 transition-opacity">
+          <button
+            onClick={() => onEdit(bookmark)}
+            className="p-1.5 text-muted-foreground hover:text-foreground hover:bg-accent rounded-md transition-colors"
+            title="Edit"
+          >
+            <Pencil className="w-3.5 h-3.5" strokeWidth={1.5} />
+          </button>
+          <button
+            onClick={() => onDelete(bookmark._id)}
+            className="p-1.5 text-muted-foreground hover:text-destructive hover:bg-destructive/10 rounded-md transition-colors"
+            title="Delete"
+          >
+            <Trash className="w-3.5 h-3.5" strokeWidth={1.5} />
+          </button>
+        </div>
+      )}
     </div>
   )
 })
diff --git a/src/components/bookmarks/BookmarkList.jsx b/src/components/bookmarks/BookmarkList.jsx
index f7c467f..b440ff8 100644
--- a/src/components/bookmarks/BookmarkList.jsx
+++ b/src/components/bookmarks/BookmarkList.jsx
@@ -8,6 +8,7 @@ import { BookmarkInlineCard } from './BookmarkInlineCard'
 import { InboxView } from './InboxView'
 import { TagSidebar } from './TagSidebar'
 import { FilterBar } from './FilterBar'
+import { SelectionActionBar } from './SelectionActionBar'
 import { SettingsView } from '../ui/SettingsView'
 import { HelpModal } from '../ui/HelpModal'
 import { ToastContainer } from '../ui/Toast'
@@ -15,6 +16,7 @@ import { PackageOpen } from '../ui/Icons'
 import {
   getAllBookmarks,
   deleteBookmark,
+  bulkDeleteBookmarks,
 } from '../../services/bookmarks'
 
 export function BookmarkList() {
@@ -51,6 +53,8 @@ export function BookmarkList() {
   const [isSidebarOpen, setIsSidebarOpen] = useState(false)
   const [isHelpOpen, setIsHelpOpen] = useState(false)
   const [selectedIndex, setSelectedIndex] = useState(-1)
+  const [selectionMode, setSelectionMode] = useState(false)
+  const [selectedIds, setSelectedIds] = useState(new Set())
   const selectedItemRef = useRef(null)
   const searchInputRef = useRef(null)
   const inboxViewRef = useRef(null)
@@ -211,15 +215,133 @@ export function BookmarkList() {
     }
   }, [addToast])
 
+  const toggleSelectionMode = useCallback(() => {
+    setSelectionMode(prev => {
+      if (prev) {
+        setSelectedIds(new Set())
+      }
+      return !prev
+    })
+  }, [])
+
+  const exitSelectionMode = useCallback(() => {
+    setSelectionMode(false)
+    setSelectedIds(new Set())
+  }, [])
+
+  const toggleSelectBookmark = useCallback((id, initiateSelection = false) => {
+    if (initiateSelection && !selectionMode) {
+      setSelectionMode(true)
+      setSelectedIds(new Set([id]))
+      return
+    }
+
+    setSelectedIds(prev => {
+      const next = new Set(prev)
+      if (next.has(id)) {
+        next.delete(id)
+      } else {
+        next.add(id)
+      }
+      return next
+    })
+  }, [selectionMode])
+
+  const toggleSelectCurrent = useCallback(() => {
+    if (!selectionMode) return
+    if (selectedIndex >= 0 && selectedIndex < filteredBookmarks.length) {
+      const bookmark = filteredBookmarks[selectedIndex]
+      toggleSelectBookmark(bookmark._id)
+    }
+  }, [selectionMode, selectedIndex, filteredBookmarks, toggleSelectBookmark])
+
+  const selectAllBookmarks = useCallback(() => {
+    if (!selectionMode) {
+      setSelectionMode(true)
+    }
+    setSelectedIds(new Set(filteredBookmarks.map(b => b._id)))
+  }, [selectionMode, filteredBookmarks])
+
+  const selectNextWithShift = useCallback(() => {
+    if (filteredBookmarks.length === 0) return
+
+    if (!selectionMode) {
+      setSelectionMode(true)
+    }
+
+    // Select current item before moving
+    if (selectedIndex >= 0 && selectedIndex < filteredBookmarks.length) {
+      const currentBookmark = filteredBookmarks[selectedIndex]
+      setSelectedIds(prev => new Set(prev).add(currentBookmark._id))
+    }
+
+    // Move to next and select it
+    setSelectedIndex(prev => {
+      const maxIndex = filteredBookmarks.length - 1
+      const nextIndex = prev < maxIndex ? prev + 1 : prev
+      if (nextIndex >= 0 && nextIndex < filteredBookmarks.length) {
+        const nextBookmark = filteredBookmarks[nextIndex]
+        setSelectedIds(p => new Set(p).add(nextBookmark._id))
+      }
+      return nextIndex
+    })
+  }, [selectionMode, selectedIndex, filteredBookmarks])
+
+  const selectPrevWithShift = useCallback(() => {
+    if (filteredBookmarks.length === 0) return
+
+    if (!selectionMode) {
+      setSelectionMode(true)
+    }
+
+    // Select current item before moving
+    if (selectedIndex >= 0 && selectedIndex < filteredBookmarks.length) {
+      const currentBookmark = filteredBookmarks[selectedIndex]
+      setSelectedIds(prev => new Set(prev).add(currentBookmark._id))
+    }
+
+    // Move to prev and select it
+    setSelectedIndex(prev => {
+      const prevIndex = prev > 0 ? prev - 1 : 0
+      if (prevIndex >= 0 && prevIndex < filteredBookmarks.length) {
+        const prevBookmark = filteredBookmarks[prevIndex]
+        setSelectedIds(p => new Set(p).add(prevBookmark._id))
+      }
+      return prevIndex
+    })
+  }, [selectionMode, selectedIndex, filteredBookmarks])
+
+  const handleBulkDelete = useCallback(() => {
+    if (selectedIds.size === 0) return
+
+    const count = selectedIds.size
+    try {
+      bulkDeleteBookmarks(Array.from(selectedIds))
+      addToast({
+        message: `Deleted ${count} bookmark${count > 1 ? 's' : ''}`,
+        action: () => {
+          undo()
+        },
+        actionLabel: 'Undo',
+        duration: 5000,
+      })
+      exitSelectionMode()
+    } catch (error) {
+      console.error('Failed to delete bookmarks:', error)
+      addToast({ message: 'Failed to delete bookmarks', duration: 3000 })
+    }
+  }, [selectedIds, addToast, exitSelectionMode])
+
   useEffect(() => {
     setSelectedIndex(-1)
   }, [filteredBookmarks.length, filterView, selectedTag, debouncedSearchQuery])
 
-  // Close inline card when view/filter changes
+  // Close inline card and exit selection mode when view/filter changes
   useEffect(() => {
     setIsAddingNew(false)
     setEditingBookmarkId(null)
-  }, [filterView, selectedTag, currentView])
+    exitSelectionMode()
+  }, [filterView, selectedTag, currentView, exitSelectionMode])
 
   useEffect(() => {
     if (selectedIndex >= 0 && selectedItemRef.current) {
@@ -236,13 +358,18 @@ export function BookmarkList() {
     'shift+?': showHelp,
     'j': selectNext,
     'k': selectPrev,
+    'shift+j': selectNextWithShift,
+    'shift+k': selectPrevWithShift,
     'enter': openSelected,
     'e': editSelected,
-    'd': deleteSelected,
+    'd': selectionMode && selectedIds.size > 0 ? handleBulkDelete : deleteSelected,
     'mod+k': focusSearch,
     'q': exitInbox,
     'mod+z': handleUndo,
     'mod+shift+z': handleRedo,
+    'escape': exitSelectionMode,
+    'space': toggleSelectCurrent,
+    'mod+a': selectAllBookmarks,
   })
 
   const handleAddNew = openNewBookmarkForm
@@ -338,6 +465,8 @@ export function BookmarkList() {
               onToggleSidebar={() => setIsSidebarOpen(!isSidebarOpen)}
               onAddNew={handleAddNew}
               searchInputRef={searchInputRef}
+              selectionMode={selectionMode}
+              onToggleSelectionMode={toggleSelectionMode}
             />
 
             <div className="flex-1 overflow-y-auto bg-background">
@@ -389,9 +518,12 @@ export function BookmarkList() {
                               ref={index === selectedIndex ? selectedItemRef : null}
                               bookmark={bookmark}
                               isSelected={index === selectedIndex}
+                              isChecked={selectedIds.has(bookmark._id)}
+                              selectionMode={selectionMode}
                               onEdit={handleEdit}
                               onDelete={handleDelete}
                               onTagClick={handleTagClick}
+                              onToggleSelect={toggleSelectBookmark}
                             />
                           )
                         ))
@@ -412,6 +544,12 @@ export function BookmarkList() {
 
       <HelpModal isOpen={isHelpOpen} onClose={() => setIsHelpOpen(false)} />
 
+      <SelectionActionBar
+        selectedCount={selectedIds.size}
+        onDelete={handleBulkDelete}
+        onCancel={exitSelectionMode}
+      />
+
       <ToastContainer toasts={toasts} onRemove={removeToast} />
     </div>
   )
diff --git a/src/components/bookmarks/FilterBar.jsx b/src/components/bookmarks/FilterBar.jsx
index 1fe7448..68f2917 100644
--- a/src/components/bookmarks/FilterBar.jsx
+++ b/src/components/bookmarks/FilterBar.jsx
@@ -1,4 +1,4 @@
-import { X, ChevronDown, Menu, Search, Plus } from '../ui/Icons'
+import { X, ChevronDown, Menu, Search, Plus, ListChecks } from '../ui/Icons'
 
 export function FilterBar({
   searchQuery,
@@ -9,6 +9,8 @@ export function FilterBar({
   onToggleSidebar,
   onAddNew,
   searchInputRef,
+  selectionMode,
+  onToggleSelectionMode,
 }) {
   const handleKeyDown = (e) => {
     if (e.key === 'Enter') {
@@ -69,9 +71,23 @@ export function FilterBar({
           <ChevronDown className="w-3 h-3 absolute right-2 top-1/2 -translate-y-1/2 pointer-events-none text-muted-foreground" strokeWidth={1.5} />
         </div>
 
+        <button
+          onClick={onToggleSelectionMode}
+          className={`h-9 px-3 rounded-md font-medium text-sm inline-flex items-center gap-1.5 transition-colors ${
+            selectionMode
+              ? 'bg-primary text-primary-foreground hover:bg-primary/90'
+              : 'text-muted-foreground hover:text-foreground hover:bg-accent'
+          }`}
+          aria-label={selectionMode ? 'Exit selection mode' : 'Select bookmarks'}
+          title={selectionMode ? 'Exit selection mode' : 'Select multiple bookmarks'}
+        >
+          <ListChecks className="w-4 h-4" strokeWidth={1.5} />
+          <span className="hidden sm:inline">{selectionMode ? 'Done' : 'Select'}</span>
+        </button>
+
         <button
           onClick={onAddNew}
-          className="ml-auto h-9 px-4 rounded-md bg-primary text-primary-foreground hover:bg-primary/90 shadow-sm font-medium text-sm inline-flex items-center gap-1.5 transition-colors"
+          className="h-9 px-4 rounded-md bg-primary text-primary-foreground hover:bg-primary/90 shadow-sm font-medium text-sm inline-flex items-center gap-1.5 transition-colors"
           aria-label="Add bookmark"
         >
           <Plus className="w-4 h-4" strokeWidth={2} />
diff --git a/src/components/bookmarks/SelectionActionBar.jsx b/src/components/bookmarks/SelectionActionBar.jsx
new file mode 100644
index 0000000..eee7bfb
--- /dev/null
+++ b/src/components/bookmarks/SelectionActionBar.jsx
@@ -0,0 +1,33 @@
+import { Trash, X } from '../ui/Icons'
+
+export function SelectionActionBar({ selectedCount, onDelete, onCancel }) {
+  if (selectedCount === 0) return null
+
+  return (
+    <div className="fixed bottom-6 left-1/2 -translate-x-1/2 z-50 animate-in fade-in slide-in-from-bottom-4 duration-200">
+      <div className="flex items-center gap-2 px-4 py-2.5 bg-popover border border-border rounded-lg shadow-lg">
+        <span className="text-sm font-medium text-foreground pr-2">
+          {selectedCount} selected
+        </span>
+
+        <div className="w-px h-5 bg-border" />
+
+        <button
+          onClick={onDelete}
+          className="flex items-center gap-1.5 px-3 py-1.5 text-sm font-medium text-destructive hover:bg-destructive/10 rounded-md transition-colors"
+        >
+          <Trash className="w-4 h-4" strokeWidth={1.5} />
+          Delete
+        </button>
+
+        <button
+          onClick={onCancel}
+          className="flex items-center gap-1.5 px-3 py-1.5 text-sm text-muted-foreground hover:text-foreground hover:bg-accent rounded-md transition-colors"
+        >
+          <X className="w-4 h-4" strokeWidth={1.5} />
+          Cancel
+        </button>
+      </div>
+    </div>
+  )
+}
diff --git a/src/components/ui/Icons.jsx b/src/components/ui/Icons.jsx
index 72ed99c..f2c03ab 100644
--- a/src/components/ui/Icons.jsx
+++ b/src/components/ui/Icons.jsx
@@ -17,4 +17,7 @@ export {
   Smartphone,
   AlertCircle,
   Inbox,
+  Square,
+  CheckSquare,
+  ListChecks,
 } from 'lucide-react'
diff --git a/src/services/bookmarks.js b/src/services/bookmarks.js
index a3179e3..ed5bf30 100644
--- a/src/services/bookmarks.js
+++ b/src/services/bookmarks.js
@@ -226,6 +226,33 @@ export function deleteBookmark(id) {
   console.log('[Bookmarks] Deleted:', id)
 }
 
+/**
+ * Delete multiple bookmarks in a single transaction (for undo support)
+ * @param {string[]} ids - Array of bookmark IDs to delete
+ * @returns {number} - Number of bookmarks deleted
+ */
+export function bulkDeleteBookmarks(ids) {
+  if (!Array.isArray(ids) || ids.length === 0) {
+    return 0
+  }
+
+  const doc = getYdoc()
+  const bookmarksMap = doc.getMap('bookmarks')
+
+  let deletedCount = 0
+  doc.transact(() => {
+    for (const id of ids) {
+      if (bookmarksMap.has(id)) {
+        bookmarksMap.delete(id)
+        deletedCount++
+      }
+    }
+  }, LOCAL_ORIGIN)
+
+  console.log('[Bookmarks] Bulk deleted:', deletedCount, 'bookmarks')
+  return deletedCount
+}
+
 /**
  * Toggle read-later status
  */