Best png compression so far

Author: madskristensen

src/ImageOptimizer.csproj

@@ -160,6 +160,9 @@
     <Content Include="Resources\Tools\pngquant.exe">
       <IncludeInVSIX>true</IncludeInVSIX>
     </Content>
+    <Content Include="Resources\Tools\TruePNG.exe">
+      <IncludeInVSIX>true</IncludeInVSIX>
+    </Content>
     <Content Include="Resources\Tools\zopfli.exe">
       <IncludeInVSIX>true</IncludeInVSIX>
     </Content>

src/Resources/Tools/TruePNG.exe

@@ -1,4 +1,7 @@
 ::optipng %1 -out %2 -o5 -i0
 ::pngout %1 %2 /s0 /y /kpHYs
 ::pngzopfli %1 10 %2
-zopflipng %1 %2
+truepng /o4 %1 /out %2
+zopflipng --ohh %2 %2.png
+copy %2.png %2 /y
+del %2.png

src/Resources/Tools/advdef.exe

@@ -1,4 +1,16 @@
-pngquant --speed 1 %1 --output %2
+pngquant --speed 1 --skip-if-larger %1 --output %2
+
 ::optipng %2 -out %2 -o3 -i0
+::pngout %2 %2 /s0 /y /kpHYs
+if not exist %2 copy %1 %2
+
+truepng /o4 %2
 pngout %2 %2 /s0 /y /kpHYs
-::zopflipng %2
+zopflipng --ohh %2 %2.png
+
+copy %2.png %2 /y
+del %2.png
+
+
+::advpng --recompress %2
+::advdef -z -4 %2

src/Resources/Tools/advpng.exe

@@ -76,6 +76,7 @@
     <Content Include="Artifacts\jpg\lake.jpg" />
     <Content Include="Artifacts\png\AddClass.png" />
     <Content Include="Artifacts\png\Bower.png" />
+    <Content Include="Artifacts\png\ducati.png" />
     <Content Include="Artifacts\png\grunt.png" />
     <Content Include="Artifacts\png\logo.png" />
     <Content Include="Artifacts\png\screenshot.png" />

src/Resources/Tools/png-lossless.cmd

@@ -44,15 +44,15 @@ public void Png_LossLess()
         {
             long savings = ExecuteTest("*.png", false);
 
-            Assert.IsTrue(savings == 28619, "Don't compress enough");
+            Assert.IsTrue(savings == 28855, "Don't compress enough");
         }
 
         [TestMethod, TestCategory("PNG")]
         public void Png_Lossy()
         {
             long savings = ExecuteTest("*.png", true);
 
-            Assert.IsTrue(savings == 78181, "Don't compress enough");
+            Assert.IsTrue(savings == 135289, "Don't compress enough");
         }
 
         [TestMethod, TestCategory("GIF")]
@@ -100,7 +100,7 @@ private long RunCompression(string searchFilter, bool lossy)
 
             foreach (var group in grouped)
             {
-                var sum = group.Sum(g =>  g.Saving);
+                var sum = group.Sum(g => g.Saving);
                 var time = group.Average(g => g.Elapsed.TotalSeconds);
                 total += sum;
                 sb.AppendLine(group.Key + "\t" + group.Count() + "\t" + sum + "\t" + Math.Round(time, 2));