diff --git a/DocFX.Plugin.DescriptionGenerator/DescriptionPostProcessor.cs b/DocFX.Plugin.DescriptionGenerator/DescriptionPostProcessor.cs
index b40e76f..103e9cb 100644
--- a/DocFX.Plugin.DescriptionGenerator/DescriptionPostProcessor.cs
+++ b/DocFX.Plugin.DescriptionGenerator/DescriptionPostProcessor.cs
@@ -4,6 +4,7 @@
 using System.IO;
 using System.Linq;
 using System.Reflection;
+using System.Threading.Tasks;
 using HtmlAgilityPack;
 using Microsoft.DocAsCode.Common;
 using Microsoft.DocAsCode.Plugins;
@@ -17,37 +18,43 @@ public class DescriptionPostProcessor : IPostProcessor
         private const string FullStopDelimiter = ". ";
         private int _savedFiles;
 
-        public ImmutableDictionary<string, object> PrepareMetadata(ImmutableDictionary<string, object> metadata) =>
-            metadata;
+        public ImmutableDictionary<string, object> PrepareMetadata(ImmutableDictionary<string, object> metadata)
+            => metadata;
 
         public Manifest Process(Manifest manifest, string outputFolder)
         {
-            string versionInfo = Assembly.GetExecutingAssembly()
-                                     .GetCustomAttribute<AssemblyInformationalVersionAttribute>()
-                                     ?.InformationalVersion ??
-                                 Assembly.GetExecutingAssembly().GetName().Version.ToString();
+            var versionInfo = Assembly.GetExecutingAssembly()
+                                  .GetCustomAttribute<AssemblyInformationalVersionAttribute>()
+                                  ?.InformationalVersion ??
+                              Assembly.GetExecutingAssembly().GetName().Version.ToString();
             Logger.LogInfo($"Version: {versionInfo}");
-            foreach (var manifestItem in manifest.Files.Where(x => !string.IsNullOrEmpty(x.SourceRelativePath)))
+            var taskQueue = manifest.Files.Where(x => !string.IsNullOrEmpty(x.SourceRelativePath)).Select(manifestItem =>
             {
-                Logger.LogVerbose($"Document type for {manifestItem.SourceRelativePath} is {manifestItem.DocumentType}.");
-                foreach (var manifestItemOutputFile in manifestItem.OutputFiles.Where(x =>
-                    !string.IsNullOrEmpty(x.Value.RelativePath)))
+                return Task.Run(() =>
                 {
-                    string sourcePath = Path.Combine(manifest.SourceBasePath, manifestItem.SourceRelativePath);
-                    string outputPath = Path.Combine(outputFolder, manifestItemOutputFile.Value.RelativePath);
-                    if (manifestItem.DocumentType == "Conceptual")
-                        WriteMetadataTag(sourcePath, outputPath, ArticleType.Conceptual);
-                    if (manifestItem.DocumentType == "ManagedReference")
-                        WriteMetadataTag(sourcePath, outputPath, ArticleType.Reference);
-                }
-            }
+                    Logger.LogVerbose(
+                        $"Document type for {manifestItem.SourceRelativePath} is {manifestItem.DocumentType}.");
+                    foreach (var manifestItemOutputFile in manifestItem.OutputFiles.Where(x =>
+                        !string.IsNullOrEmpty(x.Value.RelativePath)))
+                    {
+                        var sourcePath = Path.Combine(manifest.SourceBasePath, manifestItem.SourceRelativePath);
+                        var outputPath = Path.Combine(outputFolder, manifestItemOutputFile.Value.RelativePath);
+                        if (manifestItem.DocumentType == "Conceptual")
+                            WriteMetadataTag(sourcePath, outputPath, ArticleType.Conceptual);
+                        if (manifestItem.DocumentType == "ManagedReference")
+                            WriteMetadataTag(sourcePath, outputPath, ArticleType.Reference);
+                    }
+                });
+            }).ToArray();
+
+            Task.WaitAll(taskQueue);
 
             Logger.LogInfo($"Added description tags to {_savedFiles} items.");
             return manifest;
         }
 
         /// <summary>
-        ///     Injects the description tag according to the type of article.
+        ///     Injects the description tag according to the <paramref name="type" /> of article.
         /// </summary>
         /// <param name="sourcePath">The original article path.</param>
         /// <param name="outputPath">The output path.</param>
@@ -57,22 +64,24 @@ private void WriteMetadataTag(string sourcePath, string outputPath, ArticleType
             Logger.LogVerbose($"Processing metadata from {sourcePath} to {outputPath}...");
             var htmlDoc = new HtmlDocument();
             htmlDoc.Load(outputPath);
-            
+
             // Write description
-            string descriptionText = string.Empty;
+            var descriptionText = string.Empty;
             switch (type)
             {
                 case ArticleType.Conceptual:
-                    var articleInnerText = htmlDoc.DocumentNode.SelectSingleNode("//article[@id='_content']/p")?.InnerText;
+                    var articleInnerText =
+                        htmlDoc.DocumentNode.SelectSingleNode("//article[@id='_content']/p")?.InnerText;
                     if (string.IsNullOrEmpty(articleInnerText)) return;
 
-                    int articlePunctuationPos = articleInnerText.IndexOf(FullStopDelimiter, StringComparison.Ordinal);
+                    var articlePunctuationPos = articleInnerText.IndexOf(FullStopDelimiter, StringComparison.Ordinal);
                     descriptionText = articlePunctuationPos <= FixedDescriptionLength && articlePunctuationPos > 0
                         ? articleInnerText.Remove(articlePunctuationPos + FullStopDelimiter.Length).Trim()
                         : articleInnerText.Truncate(FixedDescriptionLength, "...");
                     break;
                 case ArticleType.Reference:
-                    var memberDescription = htmlDoc.DocumentNode.SelectSingleNode("//div[contains(@class, 'level0 summary')]/p")?.InnerText;
+                    var memberDescription = htmlDoc.DocumentNode
+                        .SelectSingleNode("//div[contains(@class, 'level0 summary')]/p")?.InnerText;
                     if (!string.IsNullOrEmpty(memberDescription)) descriptionText = memberDescription;
                     break;
             }
@@ -88,10 +97,9 @@ private void WriteMetadataTag(string sourcePath, string outputPath, ArticleType
         ///     Appends the description text into the meta tag of the document.
         /// </summary>
         /// <param name="htmlDoc">The document to be modified.</param>
-        /// <param name="type">The type of metadata to inject.</param>
         /// <param name="value">The text to append.</param>
         /// <returns>
-        ///     The modified <see cref="HtmlDocument"/>.
+        ///     The modified <see cref="HtmlDocument" /> .
         /// </returns>
         private static HtmlDocument AppendMetadata(HtmlDocument htmlDoc, string value)
         {