diff --git a/ShareX.ImageEffectsLib/Forms/ImageEffectsForm.cs b/ShareX.ImageEffectsLib/Forms/ImageEffectsForm.cs
index e683ae2e9..037d5cbff 100644
--- a/ShareX.ImageEffectsLib/Forms/ImageEffectsForm.cs
+++ b/ShareX.ImageEffectsLib/Forms/ImageEffectsForm.cs
@@ -129,6 +129,7 @@ private void AddAllEffectsToContextMenu()
                 typeof(Canvas),
                 typeof(Crop),
                 typeof(Flip),
+                typeof(ForceProportions),
                 typeof(Resize),
                 typeof(Rotate),
                 typeof(RoundedCorners),
diff --git a/ShareX.ImageEffectsLib/Manipulations/ForceProportions.cs b/ShareX.ImageEffectsLib/Manipulations/ForceProportions.cs
new file mode 100644
index 000000000..aa6a588b1
--- /dev/null
+++ b/ShareX.ImageEffectsLib/Manipulations/ForceProportions.cs
@@ -0,0 +1,122 @@
+#region License Information (GPL v3)
+
+/*
+    ShareX - A program that allows you to take screenshots and share any file type
+    Copyright (c) 2007-2020 ShareX Team
+
+    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 2
+    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, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+    Optionally you can also view the license at <http://www.gnu.org/licenses/>.
+*/
+
+#endregion License Information (GPL v3)
+
+using ShareX.HelpersLib;
+using System;
+using System.ComponentModel;
+using System.Drawing;
+using System.Drawing.Design;
+
+namespace ShareX.ImageEffectsLib
+{
+    [Description("Force Proportions")]
+    internal class ForceProportions : ImageEffect
+    {
+        private int width = 1;
+        private int height = 1;
+
+        [DefaultValue(typeof(int), "1")]
+        public int ProportionalWidth
+        {
+            get {
+                return width;
+            }
+            set
+            {
+                width = Math.Max(1, value);
+            }
+        }
+        [DefaultValue(typeof(int), "1")]
+        public int ProportionalHeight
+        {
+            get
+            {
+                return height;
+            }
+            set
+            {
+                height = Math.Max(1, value);
+            }
+        }
+
+        public enum ForceMethod
+        {
+            Grow,
+            Crop
+        }
+
+        public ForceMethod Method { get; set; } = ForceMethod.Grow;
+
+        [DefaultValue(typeof(Color), "Transparent"), Editor(typeof(MyColorEditor), typeof(UITypeEditor)), TypeConverter(typeof(MyColorConverter))]
+        public Color GrowFillColor { get; set; } = Color.FromArgb(0);
+
+        public ForceProportions()
+        {
+            this.ApplyDefaultPropertyValues();
+        }
+
+        public override Bitmap Apply(Bitmap bmp)
+        {
+            float current_ratio = bmp.Width / (float)bmp.Height;
+            float target_ratio = width / (float)height;
+
+            bool is_target_wider = target_ratio > current_ratio;
+
+            int target_width = bmp.Width;
+            int target_height = bmp.Height;
+            int margin_left = 0;
+            int margin_top = 0;
+
+            if (Method == ForceMethod.Crop)
+            {
+                if (is_target_wider)
+                {
+                    target_height = (int)Math.Round(bmp.Width / target_ratio);
+                    margin_top = (bmp.Height - target_height) / 2;
+                }
+                else
+                {
+                    target_width = (int)Math.Round(bmp.Height * target_ratio);
+                    margin_left = (bmp.Width - target_width) / 2;
+                }
+                return ImageHelpers.CropBitmap(bmp, new Rectangle(margin_left, margin_top, target_width, target_height));
+            }
+            if (Method == ForceMethod.Grow)
+            {
+                if (is_target_wider)
+                {
+                    target_width = (int)Math.Round(bmp.Height * target_ratio);
+                }
+                else
+                {
+                    target_height = (int)Math.Round(bmp.Width / target_ratio);
+                }
+                return ImageHelpers.ResizeImage(bmp, target_width, target_height, false, true, GrowFillColor);
+            }
+
+            return bmp;
+        }
+    }
+}
\ No newline at end of file
diff --git a/ShareX.ImageEffectsLib/ShareX.ImageEffectsLib.csproj b/ShareX.ImageEffectsLib/ShareX.ImageEffectsLib.csproj
index f98cde0cd..c417f20b7 100644
--- a/ShareX.ImageEffectsLib/ShareX.ImageEffectsLib.csproj
+++ b/ShareX.ImageEffectsLib/ShareX.ImageEffectsLib.csproj
@@ -142,6 +142,7 @@
     </Compile>
     <Compile Include="ImageEffectPreset.cs" />
     <Compile Include="Manipulations\AutoCrop.cs" />
+    <Compile Include="Manipulations\ForceProportions.cs" />
     <Compile Include="Manipulations\Crop.cs" />
     <Compile Include="Manipulations\RoundedCorners.cs" />
     <Compile Include="Manipulations\Skew.cs" />