diff --git a/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/ChromiumResourcePackage/PakExtractor.cs b/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/ChromiumResourcePackage/PakExtractor.cs
new file mode 100644
index 0000000..dab9e21
--- /dev/null
+++ b/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/ChromiumResourcePackage/PakExtractor.cs
@@ -0,0 +1,231 @@
+// Copyright © 2017-2026 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System;
+using System.Buffers;
+using System.Collections.Generic;
+using System.IO;
+
+namespace QuickLook.Plugin.ArchiveViewer.ChromiumResourcePackage;
+
+/// <summary>
+/// Provides static methods for extracting resources from Chrome .pak archive files.
+/// </summary>
+public static class PakExtractor
+{
+    /// <summary>
+    /// Extracts all resources from a Chrome .pak file and saves them as individual files in the specified output directory.
+    /// Each resource file is named using a 9-digit zero-padded decimal string representing its resource ID (e.g., "000000001").
+    /// </summary>
+    /// <param name="fileName">The path to the .pak file to extract.</param>
+    /// <param name="outputDirectory">The directory where extracted resource files will be saved.</param>
+    public static void ExtractToDirectory(string fileName, string outputDirectory)
+    {
+        using var stream = File.OpenRead(fileName);
+        using var br = new BinaryReader(stream);
+        var version = br.ReadUInt32();
+        var encoding = br.ReadByte();
+        stream.Seek(3, SeekOrigin.Current); // Skip 3 reserved bytes
+        var resourceCount = br.ReadUInt16();
+        var aliasCount = br.ReadUInt16();
+
+        Entry[] entries = new Entry[resourceCount + 1];
+        for (int i = 0; i < resourceCount + 1; i++)
+        {
+            var resourceId = br.ReadUInt16();
+            var fileOffset = br.ReadUInt32();
+            entries[i] = new Entry(resourceId, fileOffset);
+        }
+        // Aliases are not used in extraction, so just skip reading if not needed
+        stream.Seek(aliasCount * 4, SeekOrigin.Current);
+
+        Directory.CreateDirectory(outputDirectory);
+
+        // Use a single buffer for all resources (max resource size)
+        int maxLength = 0;
+        for (int i = 0; i < resourceCount; i++)
+        {
+            int len = (int)(entries[i + 1].FileOffset - entries[i].FileOffset);
+            if (len > maxLength) maxLength = len;
+        }
+        byte[] buffer = ArrayPool<byte>.Shared.Rent(maxLength);
+
+        try
+        {
+            for (int i = 0; i < resourceCount; i++)
+            {
+                int length = (int)(entries[i + 1].FileOffset - entries[i].FileOffset);
+                stream.Seek(entries[i].FileOffset, SeekOrigin.Begin);
+                int read = 0;
+                while (read < length)
+                {
+                    int n = stream.Read(buffer, read, length - read);
+                    if (n == 0) break;
+                    read += n;
+                }
+                string resourceName = entries[i].ResourceId.ToString("D9");
+                using var file = File.Create(Path.Combine(outputDirectory, resourceName));
+                file.Write(buffer, 0, length);
+            }
+        }
+        finally
+        {
+            ArrayPool<byte>.Shared.Return(buffer);
+        }
+    }
+
+    /// <summary>
+    /// Extracts all resources from a Chrome .pak file and returns them as a dictionary.
+    /// The dictionary key is a 9-digit zero-padded decimal string representing the resource ID,
+    /// optionally with a guessed file extension, and the value is the resource content as a byte array.
+    /// </summary>
+    /// <param name="fileName">The path to the .pak file to extract.</param>
+    /// <param name="appendExtension">If true, append guessed file extension to the key (e.g., "000000001.png").</param>
+    /// <returns>A dictionary mapping resource names to their byte content.</returns>
+    public static Dictionary<string, byte[]> ExtractToDictionary(string fileName, bool appendExtension = true)
+    {
+        using var stream = File.OpenRead(fileName);
+        using var br = new BinaryReader(stream);
+        var version = br.ReadUInt32();
+        var encoding = br.ReadByte();
+        stream.Seek(3, SeekOrigin.Current); // Skip 3 reserved bytes
+        var resourceCount = br.ReadUInt16();
+        var aliasCount = br.ReadUInt16();
+
+        Entry[] entries = new Entry[resourceCount + 1];
+        for (int i = 0; i < resourceCount + 1; i++)
+        {
+            var resourceId = br.ReadUInt16();
+            var fileOffset = br.ReadUInt32();
+            entries[i] = new Entry(resourceId, fileOffset);
+        }
+        // Aliases are not used in extraction, so just skip reading if not needed
+        stream.Seek(aliasCount * 4, SeekOrigin.Current);
+
+        // Use a single buffer for all resources (max resource size)
+        int maxLength = 0;
+        for (int i = 0; i < resourceCount; i++)
+        {
+            int len = (int)(entries[i + 1].FileOffset - entries[i].FileOffset);
+            if (len > maxLength) maxLength = len;
+        }
+        byte[] buffer = ArrayPool<byte>.Shared.Rent(maxLength);
+        var dict = new Dictionary<string, byte[]>(resourceCount);
+
+        try
+        {
+            for (int i = 0; i < resourceCount; i++)
+            {
+                int length = (int)(entries[i + 1].FileOffset - entries[i].FileOffset);
+                stream.Seek(entries[i].FileOffset, SeekOrigin.Begin);
+                int read = 0;
+                while (read < length)
+                {
+                    int n = stream.Read(buffer, read, length - read);
+                    if (n == 0) break;
+                    read += n;
+                }
+                string resourceName = entries[i].ResourceId.ToString("D9");
+                if (appendExtension)
+                {
+                    string ext = GuessFileExtension(buffer, length);
+                    resourceName += ext;
+                }
+                // Copy only the valid part of buffer
+                var data = new byte[length];
+                Buffer.BlockCopy(buffer, 0, data, 0, length);
+                dict[resourceName] = data;
+            }
+        }
+        finally
+        {
+            ArrayPool<byte>.Shared.Return(buffer);
+        }
+        return dict;
+    }
+
+    /// <summary>
+    /// Guesses the file extension based on the content of the given byte array.
+    /// Returns common extensions such as "png", "jpg", "gif", "bmp", "pdf", "zip", etc.
+    /// Returns ".bin" if the type cannot be determined.
+    /// </summary>
+    /// <param name="data">The byte array containing the file data.</param>
+    /// <param name="length">The valid length of data to check (for pooled buffer usage).</param>
+    /// <returns>The guessed file extension with dot, e.g. ".png".</returns>
+    public static string GuessFileExtension(byte[] data, int length = -1)
+    {
+        if (data == null || (length < 0 ? data.Length : length) < 4)
+            return ".bin";
+        int len = length < 0 ? data.Length : length;
+        // PNG
+        if (len > 8 && data[0] == 0x89 && data[1] == 0x50 && data[2] == 0x4E && data[3] == 0x47)
+            return ".png";
+        // JPEG
+        if (data[0] == 0xFF && data[1] == 0xD8)
+            return ".jpg";
+        // GIF
+        if (data[0] == 0x47 && data[1] == 0x49 && data[2] == 0x46)
+            return ".gif";
+        // BMP
+        if (data[0] == 0x42 && data[1] == 0x4D)
+            return ".bmp";
+        // PDF
+        if (data[0] == 0x25 && data[1] == 0x50 && data[2] == 0x44 && data[3] == 0x46)
+            return ".pdf";
+        // ZIP/Office
+        if (data[0] == 0x50 && data[1] == 0x4B && (data[2] == 0x03 || data[2] == 0x05 || data[2] == 0x07) && (data[3] == 0x04 || data[3] == 0x06 || data[3] == 0x08))
+            return ".zip";
+        // RAR
+        if (len > 7 && data[0] == 0x52 && data[1] == 0x61 && data[2] == 0x72 && data[3] == 0x21 && data[4] == 0x1A && data[5] == 0x07 && (data[6] == 0x00 || data[6] == 0x01))
+            return ".rar";
+        // 7z
+        if (len > 5 && data[0] == 0x37 && data[1] == 0x7A && data[2] == 0xBC && data[3] == 0xAF && data[4] == 0x27 && data[5] == 0x1C)
+            return ".7z";
+        // MP3
+        if (len > 2 && data[0] == 0x49 && data[1] == 0x44 && data[2] == 0x33)
+            return ".mp3";
+        // MP4
+        if (len > 11 && data[4] == 0x66 && data[5] == 0x74 && data[6] == 0x79 && data[7] == 0x70)
+            return ".mp4";
+        // WebP
+        if (len > 11 && data[0] == 0x52 && data[1] == 0x49 && data[2] == 0x46 && data[3] == 0x46 && data[8] == 0x57 && data[9] == 0x45 && data[10] == 0x42 && data[11] == 0x50)
+            return ".webp";
+        // TXT (heuristic: printable ASCII, no nulls)
+        bool isText = true;
+        for (int i = 0; i < Math.Min(64, len); i++)
+        {
+            if (data[i] == 0 || (data[i] < 0x09) || (data[i] > 0x0D && data[i] < 0x20))
+            {
+                isText = false;
+                break;
+            }
+        }
+        if (isText)
+            return ".txt";
+        return ".bin";
+    }
+}
+
+/// <summary>
+/// Represents a resource entry in the .pak file, containing the resource ID and its file offset.
+/// </summary>
+public record struct Entry(ushort ResourceId, uint FileOffset);
+
+/// <summary>
+/// Represents an alias entry in the .pak file, mapping a resource ID to an entry index.
+/// </summary>
+public record struct Alias(ushort ResourceId, ushort EntryIndex);
diff --git a/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/Plugin.cs b/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/Plugin.cs
index fb51bd5..084ea7b 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/Plugin.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.ArchiveViewer/Plugin.cs
@@ -18,6 +18,7 @@
 using QuickLook.Common.Plugin;
 using QuickLook.Common.Plugin.MoreMenu;
 using QuickLook.Plugin.ArchiveViewer.ArchiveFile;
+using QuickLook.Plugin.ArchiveViewer.ChromiumResourcePackage;
 using QuickLook.Plugin.ArchiveViewer.CompoundFileBinary;
 using System;
 using System.Collections.Generic;
@@ -55,6 +56,9 @@ public sealed partial class Plugin : IViewer, IMoreMenu
         // List of supported compound file binary file extensions
         ".cfb",     // Compound File Binary format (used by older Microsoft Office files)
         ".eif",     // QQ emoji file (Compound File Binary format)
+
+        // List of supported chromium resource package file extensions
+        ".pak",     // Chromium resource package file, used by Chromium-based applications (e.g., Google Chrome)
     ];
 
     private IDisposable _panel;
@@ -86,6 +90,13 @@ public sealed partial class Plugin : IViewer, IMoreMenu
         {
             _panel = new CompoundInfoPanel(path);
         }
+        else if (path.EndsWith(".pak", StringComparison.OrdinalIgnoreCase))
+        {
+            var dict = PakExtractor.ExtractToDictionary(path);
+
+            // TODO
+            _ = dict;
+        }
         else
         {
             _panel = new ArchiveInfoPanel(path);