diff --git a/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml b/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml
index 570897a..f35c2e6 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml
+++ b/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml
@@ -15,7 +15,7 @@
             </ResourceDictionary.MergedDictionaries>
         </ResourceDictionary>
     </UserControl.Resources>
-    <Grid>
+    <Grid x:Name="LayoutRoot">
         <DataGrid Name="dataGrid"
                   AlternatingRowBackground="#1900FF70"
                   AlternationCount="2"
@@ -29,6 +29,13 @@
                   IsReadOnly="True"
                   ItemsSource="{Binding Path=Rows, ElementName=csvViewer}"
                   RowBackground="#00FFFFFF"
+                  SelectionMode="Single"
+                  SelectionUnit="Cell"
                   VerticalGridLinesBrush="#19000000" />
+        <local:SearchPanel x:Name="searchPanel"
+                           Margin="8"
+                           HorizontalAlignment="Right"
+                           VerticalAlignment="Top"
+                           Visibility="Collapsed" />
     </Grid>
 </UserControl>
diff --git a/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml.cs b/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml.cs
index 1b3e011..29f46d4 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/CsvViewerPanel.xaml.cs
@@ -25,7 +25,9 @@ using System.Linq;
 using System.Text;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
 using System.Windows.Data;
+using System.Windows.Input;
 using System.Windows.Media;
 using UtfUnknown;
 
@@ -36,20 +38,42 @@ public partial class CsvViewerPanel : UserControl
     public CsvViewerPanel()
     {
         InitializeComponent();
+
+        searchPanel.Visibility = Visibility.Collapsed;
+        searchPanel.SearchTextChanged += SearchPanel_SearchTextChanged;
+        searchPanel.MatchCaseChanged += SearchPanel_MatchCaseChanged;
+        searchPanel.FindNextRequested += SearchPanel_FindNextRequested;
+        searchPanel.FindPreviousRequested += SearchPanel_FindPreviousRequested;
+        searchPanel.CloseRequested += SearchPanel_CloseRequested;
+
+        PreviewKeyDown += CsvViewerPanel_PreviewKeyDown;
+        dataGrid.LoadingRow += DataGrid_LoadingRow;
     }
 
     public List<string[]> Rows { get; private set; } = [];
 
+    private readonly List<(int RowIndex, int ColumnIndex)> _matches = new();
+    private readonly HashSet<(int RowIndex, int ColumnIndex)> _matchSet = new();
+    private int _currentMatchIndex = -1;
+
     public void LoadFile(string path)
     {
         const int limit = 10000;
         var binded = false;
 
+        Rows.Clear();
+        dataGrid.Columns.Clear();
+        _matches.Clear();
+        _matchSet.Clear();
+        _currentMatchIndex = -1;
+        searchPanel.SetMatchCount(0, 0);
+        searchPanel.Visibility = Visibility.Collapsed;
+
         var encoding = CharsetDetector.DetectFromFile(path).Detected?.Encoding ??
                        Encoding.Default;
 
         using var sr = new StreamReader(new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite), encoding);
-      
+
         // Use fixed delimiters for known extensions to avoid mis-detection on small samples.
         var extension = Path.GetExtension(path);
         var delimiter = extension.Equals(".tsv", StringComparison.OrdinalIgnoreCase)
@@ -110,6 +134,324 @@ public partial class CsvViewerPanel : UserControl
         }
     }
 
+    private void SearchPanel_SearchTextChanged(object sender, string searchText)
+    {
+        ExecuteSearch();
+    }
+
+    private void SearchPanel_MatchCaseChanged(object sender, bool matchCase)
+    {
+        ExecuteSearch();
+    }
+
+    private void SearchPanel_FindNextRequested(object sender, EventArgs e)
+    {
+        MoveMatch(1);
+    }
+
+    private void SearchPanel_FindPreviousRequested(object sender, EventArgs e)
+    {
+        MoveMatch(-1);
+    }
+
+    private void SearchPanel_CloseRequested(object sender, EventArgs e)
+    {
+        HideSearchPanel();
+    }
+
+    private void CsvViewerPanel_PreviewKeyDown(object sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.F && Keyboard.Modifiers.HasFlag(ModifierKeys.Control))
+        {
+            ShowSearchPanel();
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.F3)
+        {
+            MoveMatch(Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) ? -1 : 1);
+            e.Handled = true;
+            return;
+        }
+
+        if (e.Key == Key.Escape && searchPanel.Visibility == Visibility.Visible)
+        {
+            HideSearchPanel();
+            e.Handled = true;
+        }
+    }
+
+    private void DataGrid_LoadingRow(object sender, DataGridRowEventArgs e)
+    {
+        UpdateRowHighlights(e.Row);
+    }
+
+    private void UpdateRowHighlights(DataGridRow row)
+    {
+        if (row.Item is not string[] rowData)
+        {
+            return;
+        }
+
+        var rowIndex = dataGrid.ItemContainerGenerator.IndexFromContainer(row);
+        for (var columnIndex = 0; columnIndex < dataGrid.Columns.Count; columnIndex++)
+        {
+            var cell = GetCell(row, columnIndex);
+            if (cell == null)
+            {
+                continue;
+            }
+
+            if (_matchSet.Contains((rowIndex, columnIndex)))
+            {
+                cell.Background = _currentMatchIndex >= 0 && _matches[_currentMatchIndex].RowIndex == rowIndex && _matches[_currentMatchIndex].ColumnIndex == columnIndex
+                    ? CurrentMatchBrush
+                    : MatchBrush;
+            }
+            else
+            {
+                cell.ClearValue(BackgroundProperty);
+            }
+        }
+    }
+
+    private void ExecuteSearch()
+    {
+        var query = searchPanel.SearchText ?? string.Empty;
+        _matches.Clear();
+        _matchSet.Clear();
+        _currentMatchIndex = -1;
+
+        if (!string.IsNullOrEmpty(query))
+        {
+            var comparison = searchPanel.MatchCase
+                ? StringComparison.Ordinal
+                : StringComparison.OrdinalIgnoreCase;
+
+            for (var rowIndex = 0; rowIndex < Rows.Count; rowIndex++)
+            {
+                var row = Rows[rowIndex];
+                for (var columnIndex = 0; columnIndex < row.Length; columnIndex++)
+                {
+                    var cellValue = row[columnIndex];
+                    if (!string.IsNullOrEmpty(cellValue) && cellValue.IndexOf(query, comparison) >= 0)
+                    {
+                        _matches.Add((rowIndex, columnIndex));
+                        _matchSet.Add((rowIndex, columnIndex));
+                    }
+                }
+            }
+
+            if (_matches.Count > 0)
+            {
+                _currentMatchIndex = 0;
+            }
+        }
+
+        searchPanel.SetMatchCount(_currentMatchIndex + 1, _matches.Count);
+        UpdateVisibleCellHighlights();
+        UpdateCurrentMatchSelection();
+    }
+
+    private void MoveMatch(int direction)
+    {
+        if (_matches.Count == 0)
+        {
+            return;
+        }
+
+        _currentMatchIndex = (_currentMatchIndex + direction + _matches.Count) % _matches.Count;
+        UpdateCurrentMatchSelection();
+    }
+
+    private void UpdateCurrentMatchSelection()
+    {
+        if (_matches.Count == 0)
+        {
+            dataGrid.SelectedCells.Clear();
+            return;
+        }
+
+        var match = _matches[_currentMatchIndex];
+        if (match.RowIndex < 0 || match.RowIndex >= Rows.Count)
+        {
+            return;
+        }
+
+        var rowItem = Rows[match.RowIndex];
+        if (match.ColumnIndex < 0 || match.ColumnIndex >= dataGrid.Columns.Count)
+        {
+            return;
+        }
+
+        var column = dataGrid.Columns[match.ColumnIndex];
+        dataGrid.SelectedCells.Clear();
+        var cellInfo = new DataGridCellInfo(rowItem, column);
+        dataGrid.CurrentCell = cellInfo;
+        dataGrid.SelectedCells.Add(cellInfo);
+        dataGrid.ScrollIntoView(rowItem, column);
+
+        Dispatcher.BeginInvoke(new Action(() =>
+        {
+            UpdateVisibleCellHighlights();
+
+            var row = GetRow(match.RowIndex);
+            var cell = GetCell(row, match.ColumnIndex);
+            cell?.Focus();
+        }), System.Windows.Threading.DispatcherPriority.Background);
+
+        searchPanel.SetMatchCount(_currentMatchIndex + 1, _matches.Count);
+    }
+
+    private void ShowSearchPanel()
+    {
+        searchPanel.Visibility = Visibility.Visible;
+        searchPanel.FocusSearchText();
+    }
+
+    private void HideSearchPanel()
+    {
+        searchPanel.Visibility = Visibility.Collapsed;
+        dataGrid.SelectedCells.Clear();
+        _matches.Clear();
+        _matchSet.Clear();
+        _currentMatchIndex = -1;
+        searchPanel.SetMatchCount(0, 0);
+        UpdateVisibleCellHighlights();
+    }
+
+    private void UpdateVisibleCellHighlights()
+    {
+        foreach (var row in GetVisibleRows())
+        {
+            if (row.Item is not string[] rowData)
+            {
+                continue;
+            }
+
+            var rowIndex = dataGrid.ItemContainerGenerator.IndexFromContainer(row);
+            for (var columnIndex = 0; columnIndex < dataGrid.Columns.Count; columnIndex++)
+            {
+                var cell = GetCell(row, columnIndex);
+                if (cell == null)
+                {
+                    continue;
+                }
+
+                if (_matchSet.Contains((rowIndex, columnIndex)))
+                {
+                    cell.Background = _currentMatchIndex >= 0 && _matches[_currentMatchIndex].RowIndex == rowIndex && _matches[_currentMatchIndex].ColumnIndex == columnIndex
+                        ? CurrentMatchBrush
+                        : MatchBrush;
+                }
+                else
+                {
+                    cell.ClearValue(BackgroundProperty);
+                }
+            }
+        }
+    }
+
+    private IEnumerable<DataGridRow> GetVisibleRows()
+    {
+        for (var index = 0; index < dataGrid.Items.Count; index++)
+        {
+            var row = dataGrid.ItemContainerGenerator.ContainerFromIndex(index) as DataGridRow;
+            if (row != null)
+            {
+                yield return row;
+            }
+        }
+    }
+
+    private DataGridRow GetRow(int index)
+    {
+        if (index < 0 || index >= dataGrid.Items.Count)
+        {
+            return null;
+        }
+
+        var row = dataGrid.ItemContainerGenerator.ContainerFromIndex(index) as DataGridRow;
+        if (row != null)
+        {
+            return row;
+        }
+
+        dataGrid.UpdateLayout();
+        dataGrid.ScrollIntoView(dataGrid.Items[index]);
+        return dataGrid.ItemContainerGenerator.ContainerFromIndex(index) as DataGridRow;
+    }
+
+    private DataGridCell GetCell(DataGridRow row, int columnIndex)
+    {
+        if (row == null)
+        {
+            return null;
+        }
+
+        var presenter = FindVisualChild<DataGridCellsPresenter>(row);
+        if (presenter == null)
+        {
+            row.ApplyTemplate();
+            presenter = FindVisualChild<DataGridCellsPresenter>(row);
+        }
+
+        if (presenter == null)
+        {
+            return null;
+        }
+
+        var cell = presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex) as DataGridCell;
+        if (cell == null)
+        {
+            dataGrid.ScrollIntoView(row.Item, dataGrid.Columns[columnIndex]);
+            cell = presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex) as DataGridCell;
+        }
+
+        return cell;
+    }
+
+    private static T FindVisualChild<T>(DependencyObject parent)
+        where T : DependencyObject
+    {
+        if (parent == null)
+        {
+            return null;
+        }
+
+        for (var i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
+        {
+            var child = VisualTreeHelper.GetChild(parent, i);
+            if (child is T typedChild)
+            {
+                return typedChild;
+            }
+
+            var foundChild = FindVisualChild<T>(child);
+            if (foundChild != null)
+            {
+                return foundChild;
+            }
+        }
+
+        return null;
+    }
+
+    private static readonly Brush MatchBrush = CreateFrozenBrush(Color.FromArgb(0x55, 0xFF, 0xFF, 0x00));
+    private static readonly Brush CurrentMatchBrush = CreateFrozenBrush(Color.FromArgb(0xAA, 0xFF, 0xD3, 0x00));
+
+    private static Brush CreateFrozenBrush(Color color)
+    {
+        var brush = new SolidColorBrush(color);
+        if (brush.CanFreeze)
+        {
+            brush.Freeze();
+        }
+
+        return brush;
+    }
+
     public static T[] Concat<T>(T[] x, T[] y)
     {
         if (x == null) throw new ArgumentNullException("x");
diff --git a/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/SearchPanel.xaml b/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/SearchPanel.xaml
new file mode 100644
index 0000000..c2e2f8a
--- /dev/null
+++ b/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/SearchPanel.xaml
@@ -0,0 +1,71 @@
+<UserControl x:Class="QuickLook.Plugin.CsvViewer.SearchPanel"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             MinWidth="360"
+             MinHeight="36"
+             mc:Ignorable="d">
+    <Border Padding="6"
+            Background="{DynamicResource WindowBackground}"
+            BorderBrush="#102E2E3E"
+            BorderThickness="1"
+            CornerRadius="4"
+            SnapsToDevicePixels="True">
+        <StackPanel VerticalAlignment="Center" Orientation="Horizontal">
+            <TextBox x:Name="searchTextBox"
+                     Width="180"
+                     Margin="0,0,8,0"
+                     VerticalContentAlignment="Center"
+                     FocusVisualStyle="{x:Null}"
+                     KeyDown="SearchTextBox_KeyDown"
+                     TextChanged="SearchTextBox_TextChanged"
+                     ToolTip="Search" />
+
+            <CheckBox x:Name="matchCaseToggle"
+                      Margin="0,0,8,0"
+                      VerticalAlignment="Center"
+                      Checked="MatchCaseToggle_Checked"
+                      Content="Match case"
+                      Unchecked="MatchCaseToggle_Checked" />
+
+            <Button x:Name="previousButton"
+                    Margin="0,0,4,0"
+                    Click="PreviousButton_Click"
+                    ToolTip="Previous match">
+                <TextBlock HorizontalAlignment="Center"
+                           VerticalAlignment="Center"
+                           FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                           FontSize="12"
+                           Text="&#xe76b;" />
+            </Button>
+
+            <Button x:Name="nextButton"
+                    Margin="0,0,8,0"
+                    Click="NextButton_Click"
+                    ToolTip="Next match">
+                <TextBlock HorizontalAlignment="Center"
+                           VerticalAlignment="Center"
+                           FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                           FontSize="12"
+                           Text="&#xe76c;" />
+            </Button>
+
+            <TextBlock x:Name="matchCountTextBlock"
+                       VerticalAlignment="Center"
+                       Foreground="{DynamicResource WindowTextForeground}"
+                       Text="No matches" />
+
+            <Button x:Name="closeButton"
+                    Margin="8,0,0,0"
+                    Click="CloseButton_Click"
+                    ToolTip="Close">
+                <TextBlock HorizontalAlignment="Center"
+                           VerticalAlignment="Center"
+                           FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                           FontSize="12"
+                           Text="&#xe711;" />
+            </Button>
+        </StackPanel>
+    </Border>
+</UserControl>
diff --git a/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/SearchPanel.xaml.cs b/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/SearchPanel.xaml.cs
new file mode 100644
index 0000000..7057417
--- /dev/null
+++ b/QuickLook.Plugin/QuickLook.Plugin.CsvViewer/SearchPanel.xaml.cs
@@ -0,0 +1,85 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+namespace QuickLook.Plugin.CsvViewer;
+
+public partial class SearchPanel : UserControl
+{
+    public event EventHandler<string> SearchTextChanged;
+
+    public event EventHandler<bool> MatchCaseChanged;
+
+    public event EventHandler FindNextRequested;
+
+    public event EventHandler FindPreviousRequested;
+
+    public event EventHandler CloseRequested;
+
+    public SearchPanel()
+    {
+        InitializeComponent();
+    }
+
+    public string SearchText
+    {
+        get => searchTextBox.Text;
+        set => searchTextBox.Text = value;
+    }
+
+    public bool MatchCase => matchCaseToggle.IsChecked == true;
+
+    public void FocusSearchText()
+    {
+        searchTextBox.Focus();
+        searchTextBox.SelectAll();
+    }
+
+    public void SetMatchCount(int current, int total)
+    {
+        matchCountTextBlock.Text = total == 0 ? "No matches" : $"{current} of {total}";
+    }
+
+    private void SearchTextBox_TextChanged(object sender, TextChangedEventArgs e)
+    {
+        SearchTextChanged?.Invoke(this, searchTextBox.Text);
+    }
+
+    private void SearchTextBox_KeyDown(object sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Enter)
+        {
+            if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift))
+            {
+                FindPreviousRequested?.Invoke(this, EventArgs.Empty);
+            }
+            else
+            {
+                FindNextRequested?.Invoke(this, EventArgs.Empty);
+            }
+
+            e.Handled = true;
+        }
+    }
+
+    private void MatchCaseToggle_Checked(object sender, RoutedEventArgs e)
+    {
+        MatchCaseChanged?.Invoke(this, MatchCase);
+    }
+
+    private void PreviousButton_Click(object sender, RoutedEventArgs e)
+    {
+        FindPreviousRequested?.Invoke(this, EventArgs.Empty);
+    }
+
+    private void NextButton_Click(object sender, RoutedEventArgs e)
+    {
+        FindNextRequested?.Invoke(this, EventArgs.Empty);
+    }
+
+    private void CloseButton_Click(object sender, RoutedEventArgs e)
+    {
+        CloseRequested?.Invoke(this, EventArgs.Empty);
+    }
+}