Png Encoders

src/Drivers/Abstract/AbstractImage.php

@@ -94,6 +94,13 @@ abstract class AbstractImage
         );
     }
 
+    public function toPng(): EncodedImage
+    {
+        return $this->encode(
+            $this->resolveDriverClass('Encoders\PngEncoder')
+        );
+    }
+
     public function greyscale(): ImageInterface
     {
         return $this->modify(

src/Drivers/Gd/Encoders/PngEncoder.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Intervention\Image\Drivers\Gd\Encoders;
+
+use Intervention\Image\Drivers\Abstract\Encoders\AbstractEncoder;
+use Intervention\Image\EncodedImage;
+use Intervention\Image\Interfaces\EncoderInterface;
+use Intervention\Image\Interfaces\ImageInterface;
+
+class PngEncoder extends AbstractEncoder implements EncoderInterface
+{
+    public function encode(ImageInterface $image): EncodedImage
+    {
+        $data = $this->getBuffered(function () use ($image) {
+            imagepng($image->getFrames()->first()->getCore());
+        });
+
+        return new EncodedImage($data, 'image/png');
+    }
+}

src/Drivers/Imagick/Encoders/PngEncoder.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Intervention\Image\Drivers\Imagick\Encoders;
+
+use Imagick;
+use Intervention\Image\Drivers\Abstract\Encoders\AbstractEncoder;
+use Intervention\Image\EncodedImage;
+use Intervention\Image\Interfaces\EncoderInterface;
+use Intervention\Image\Interfaces\ImageInterface;
+
+class PngEncoder extends AbstractEncoder implements EncoderInterface
+{
+    public function encode(ImageInterface $image): EncodedImage
+    {
+        $format = 'png';
+        $compression = Imagick::COMPRESSION_ZIP;
+
+        $imagick = $image->getFrames()->first()->getCore();
+        $imagick->setFormat($format);
+        $imagick->setImageFormat($format);
+        $imagick->setCompression($compression);
+        $imagick->setImageCompression($compression);
+
+        return new EncodedImage($imagick->getImagesBlob(), 'image/png');
+    }
+}