diff --git a/Lib/7za.exe b/Lib/7za.exe
deleted file mode 100644
index 8a5459808..000000000
Binary files a/Lib/7za.exe and /dev/null differ
diff --git a/ShareX.HelpersLib/ZipManager.cs b/ShareX.HelpersLib/ZipManager.cs
index a1f97b4d2..767e1ea1c 100644
--- a/ShareX.HelpersLib/ZipManager.cs
+++ b/ShareX.HelpersLib/ZipManager.cs
@@ -33,14 +33,14 @@ using System.Threading.Tasks;
 
 namespace ShareX.HelpersLib
 {
-    public class ZipManager
+    public static class ZipManager
     {
-        public void Extract(string archivePath, string destination)
+        public static void Extract(string archivePath, string destination)
         {
             ZipFile.ExtractToDirectory(archivePath, destination);
         }
 
-        public void Extract(string archivePath, string destination, List<string> files)
+        public static void Extract(string archivePath, string destination, List<string> files)
         {
             using (ZipArchive archive = ZipFile.OpenRead(archivePath))
             {
@@ -60,7 +60,17 @@ namespace ShareX.HelpersLib
             }
         }
 
-        public void Compress(string archivePath, List<string> files, string workingDirectory = "")
+        public static void Compress(string source, string archivePath, CompressionLevel compression = CompressionLevel.Optimal)
+        {
+            if (File.Exists(archivePath))
+            {
+                File.Delete(archivePath);
+            }
+
+            ZipFile.CreateFromDirectory(source, archivePath, compression, false);
+        }
+
+        public static void Compress(string archivePath, List<string> files, string workingDirectory = "", CompressionLevel compression = CompressionLevel.Optimal)
         {
             if (File.Exists(archivePath))
             {
@@ -71,7 +81,7 @@ namespace ShareX.HelpersLib
             {
                 foreach (string file in files)
                 {
-                    archive.CreateEntryFromFile(Path.Combine(workingDirectory, file), file);
+                    archive.CreateEntryFromFile(Path.Combine(workingDirectory, file), file, compression);
                 }
             }
         }
diff --git a/ShareX.MediaLib/FFmpegDownloader.cs b/ShareX.MediaLib/FFmpegDownloader.cs
index 9cad68bc3..99a3556e9 100644
--- a/ShareX.MediaLib/FFmpegDownloader.cs
+++ b/ShareX.MediaLib/FFmpegDownloader.cs
@@ -59,9 +59,8 @@ namespace ShareX.MediaLib
         {
             try
             {
-                ZipManager zipManager = new ZipManager();
                 List<string> files = new List<string>() { "ffmpeg.exe" };
-                zipManager.Extract(archivePath, extractPath, files);
+                ZipManager.Extract(archivePath, extractPath, files);
                 return true;
             }
             catch (Exception e)
diff --git a/ShareX.Setup/Helpers.cs b/ShareX.Setup/Helpers.cs
index 3c830eda2..1ef50840a 100644
--- a/ShareX.Setup/Helpers.cs
+++ b/ShareX.Setup/Helpers.cs
@@ -117,16 +117,6 @@ namespace ShareX.Setup
             }
         }
 
-        public static void Zip(string source, string target)
-        {
-            ProcessStart(Path.GetFullPath(Program.SevenZipPath), $"a -tzip \"{target}\" \"{source}\" -r -mx=9");
-        }
-
-        public static void Unzip(string source, string extract)
-        {
-            ProcessStart(Path.GetFullPath(Program.SevenZipPath), $"e \"{source}\" \"{extract}\" -r");
-        }
-
         private static void ProcessStart(string filePath, string arguments)
         {
             Console.WriteLine($"Process starting: {filePath} {arguments}");
diff --git a/ShareX.Setup/InnoSetup/ShareX-setup.iss b/ShareX.Setup/InnoSetup/ShareX-setup.iss
index 54c7438e3..673081feb 100644
--- a/ShareX.Setup/InnoSetup/ShareX-setup.iss
+++ b/ShareX.Setup/InnoSetup/ShareX-setup.iss
@@ -56,7 +56,6 @@ Name: "CreateStartupIcon"; Description: "Run ShareX when Windows starts"; GroupD
 Source: "{#MyAppFilepath}"; DestDir: {app}; Flags: ignoreversion
 Source: "{#MyAppFilepath}.config"; DestDir: {app}; Flags: ignoreversion
 Source: "{#MyAppReleaseDirectory}\*.dll"; DestDir: {app}; Flags: ignoreversion
-Source: "{#MyAppReleaseDirectory}\7za.exe"; DestDir: {app}; Flags: ignoreversion
 Source: "{#MyAppRootDirectory}\Licenses\*.txt"; DestDir: {app}\Licenses; Flags: ignoreversion
 Source: "{#MyAppOutputDirectory}\Recorder-devices-setup.exe"; DestDir: {app}; Flags: ignoreversion
 Source: "{#MyAppRootDirectory}\ShareX.NativeMessagingHost\bin\Release\ShareX_NativeMessagingHost.exe"; DestDir: {app}; Flags: ignoreversion
diff --git a/ShareX.Setup/Program.cs b/ShareX.Setup/Program.cs
index e648050a2..f2d5ac89c 100644
--- a/ShareX.Setup/Program.cs
+++ b/ShareX.Setup/Program.cs
@@ -23,7 +23,9 @@
 
 #endregion License Information (GPL v3)
 
+using ShareX.HelpersLib;
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
@@ -236,7 +238,6 @@ namespace ShareX.Setup
 
             Helpers.CopyFile(Path.Combine(source, "ShareX.exe"), destination);
             Helpers.CopyFile(Path.Combine(source, "ShareX.exe.config"), destination);
-            Helpers.CopyFile(Path.Combine(source, "7za.exe"), destination);
 
             if (job == SetupJobs.CreateWindowsStoreFolder || job == SetupJobs.CreateWindowsStoreDebugFolder)
             {
@@ -294,13 +295,7 @@ namespace ShareX.Setup
                 //FileVersionInfo versionInfo = FileVersionInfo.GetVersionInfo(Path.Combine(releaseDir, "ShareX.exe"));
                 //string zipFilename = string.Format("ShareX-{0}.{1}.{2}-portable.zip", versionInfo.ProductMajorPart, versionInfo.ProductMinorPart, versionInfo.ProductBuildPart);
                 string zipPath = Path.Combine(OutputDir, "ShareX-portable.zip");
-
-                if (File.Exists(zipPath))
-                {
-                    File.Delete(zipPath);
-                }
-
-                Helpers.Zip(Path.GetFullPath(destination) + "\\*", Path.GetFullPath(zipPath));
+                ZipManager.Compress(Path.GetFullPath(destination), Path.GetFullPath(zipPath));
 
                 Directory.Delete(destination, true);
             }
@@ -315,7 +310,7 @@ namespace ShareX.Setup
                 if (!File.Exists(FFmpeg32bit))
                 {
                     string filename = Helpers.DownloadFile("http://ffmpeg.zeranoe.com/builds/win32/static/ffmpeg-20171130-83ecdc9-win32-static.zip");
-                    Helpers.Unzip(filename, "ffmpeg.exe");
+                    ZipManager.Extract(filename, "", new List<string>() { "ffmpeg.exe" });
                     File.Move("ffmpeg.exe", FFmpeg32bit);
                 }
 
@@ -327,7 +322,7 @@ namespace ShareX.Setup
                 if (!File.Exists(FFmpeg64bit))
                 {
                     string filename = Helpers.DownloadFile("http://ffmpeg.zeranoe.com/builds/win64/static/ffmpeg-20171130-83ecdc9-win64-static.zip");
-                    Helpers.Unzip(filename, "ffmpeg.exe");
+                    ZipManager.Extract(filename, "", new List<string>() { "ffmpeg.exe" });
                     File.Move("ffmpeg.exe", FFmpeg64bit);
                 }
 
diff --git a/ShareX.Setup/ShareX.Setup.csproj b/ShareX.Setup/ShareX.Setup.csproj
index 9da3accf6..6a6d40218 100644
--- a/ShareX.Setup/ShareX.Setup.csproj
+++ b/ShareX.Setup/ShareX.Setup.csproj
@@ -86,6 +86,12 @@
   <ItemGroup>
     <Content Include="WindowsStore\AppxManifest.xml" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\ShareX.HelpersLib\ShareX.HelpersLib.csproj">
+      <Project>{327750e1-9fb7-4cc3-8aea-9bc42180cad3}</Project>
+      <Name>ShareX.HelpersLib</Name>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/ShareX/Forms/AboutForm.cs b/ShareX/Forms/AboutForm.cs
index b38f00d8d..662e2a030 100644
--- a/ShareX/Forms/AboutForm.cs
+++ b/ShareX/Forms/AboutForm.cs
@@ -104,7 +104,6 @@ Icons: http://p.yusukekamiyamane.com
 ImageListView: https://github.com/oozcitak/imagelistview
 FFmpeg: http://www.ffmpeg.org
 Zeranoe FFmpeg: http://ffmpeg.zeranoe.com/builds
-7-Zip: http://www.7-zip.org
 DirectShow video and audio device: https://github.com/rdp/screen-capture-recorder-to-video-windows-free
 FluentFTP: https://github.com/robinrodricks/FluentFTP
 Steamworks.NET: https://github.com/rlabrecque/Steamworks.NET
diff --git a/ShareX/SettingManager.cs b/ShareX/SettingManager.cs
index 126f666e3..ba0446962 100644
--- a/ShareX/SettingManager.cs
+++ b/ShareX/SettingManager.cs
@@ -281,8 +281,7 @@ namespace ShareX
                     files.Add($"{Program.LogsFoldername}\\*.txt");
                 }
 
-                ZipManager zipManager = new ZipManager();
-                zipManager.Compress(archivePath, files, Program.PersonalFolder);
+                ZipManager.Compress(archivePath, files, Program.PersonalFolder);
                 return true;
             }
             catch (Exception e)
@@ -298,8 +297,7 @@ namespace ShareX
         {
             try
             {
-                ZipManager zipManager = new ZipManager();
-                zipManager.Extract(archivePath, Program.PersonalFolder);
+                ZipManager.Extract(archivePath, Program.PersonalFolder);
                 return true;
             }
             catch (Exception e)
diff --git a/ShareX/ShareX.csproj b/ShareX/ShareX.csproj
index eea7abbeb..bdfadca5b 100644
--- a/ShareX/ShareX.csproj
+++ b/ShareX/ShareX.csproj
@@ -1365,10 +1365,6 @@
     <None Include="Resources\network-ip.png" />
     <None Include="Resources\ruler-triangle.png" />
     <None Include="Resources\application-network.png" />
-    <None Include="..\Lib\7za.exe">
-      <Link>7za.exe</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
     <None Include="Resources\barcode-2d.png" />
     <None Include="Resources\GitHub.png" />
     <None Include="Resources\Twitter.ico" />