diff --git a/lib/webp4j-1.1.0.jar b/lib/webp4j-1.1.0.jar
deleted file mode 100644
index f072fb8b8..000000000
Binary files a/lib/webp4j-1.1.0.jar and /dev/null differ
diff --git a/lib/webp4j-1.2.0.jar b/lib/webp4j-1.2.0.jar
new file mode 100644
index 000000000..0f3f03ae4
Binary files /dev/null and b/lib/webp4j-1.2.0.jar differ
diff --git a/libsrc/ffdec_lib/lib/webp4j-1.1.0.jar b/libsrc/ffdec_lib/lib/webp4j-1.1.0.jar
deleted file mode 100644
index f072fb8b8..000000000
Binary files a/libsrc/ffdec_lib/lib/webp4j-1.1.0.jar and /dev/null differ
diff --git a/libsrc/ffdec_lib/lib/webp4j-1.2.0.jar b/libsrc/ffdec_lib/lib/webp4j-1.2.0.jar
new file mode 100644
index 000000000..0f3f03ae4
Binary files /dev/null and b/libsrc/ffdec_lib/lib/webp4j-1.2.0.jar differ
diff --git a/libsrc/ffdec_lib/nbproject/project.xml b/libsrc/ffdec_lib/nbproject/project.xml
index ceb64bc37..c95b273f5 100644
--- a/libsrc/ffdec_lib/nbproject/project.xml
+++ b/libsrc/ffdec_lib/nbproject/project.xml
@@ -242,7 +242,7 @@ auxiliary.show.customizer.message=<message>
         <java-data xmlns="http://www.netbeans.org/ns/freeform-project-java/4">
             <compilation-unit>
                 <package-root>src</package-root>
-                <classpath mode="compile">../../src;lib/LZMA.jar;lib/avi.jar;lib/cmykjpeg.jar;lib/ddsreader.jar;lib/gif.jar;lib/gnujpdf.jar;lib/jlayer-1.0.2.jar;lib/jpacker.jar;lib/nellymoser.jar;lib/sfntly.jar;lib/tga.jar;lib/ttf.jar;lib/vlcj-4.7.3.jar;lib/vlcj-natives-4.7.0.jar;lib/flashdebugger.jar;lib/jna-3.5.1.jar;lib/jna-platform-3.5.1.jar;lib/gifreader.jar;lib/miterstroke.jar;lib/decimal.jar;lib/flacomdoc.jar;lib/tomlj-1.1.1.jar;lib/decimal.jar;lib/webp4j-1.1.0.jar</classpath>
+                <classpath mode="compile">../../src;lib/LZMA.jar;lib/avi.jar;lib/cmykjpeg.jar;lib/ddsreader.jar;lib/gif.jar;lib/gnujpdf.jar;lib/jlayer-1.0.2.jar;lib/jpacker.jar;lib/nellymoser.jar;lib/sfntly.jar;lib/tga.jar;lib/ttf.jar;lib/vlcj-4.7.3.jar;lib/vlcj-natives-4.7.0.jar;lib/flashdebugger.jar;lib/jna-3.5.1.jar;lib/jna-platform-3.5.1.jar;lib/gifreader.jar;lib/miterstroke.jar;lib/decimal.jar;lib/flacomdoc.jar;lib/tomlj-1.1.1.jar;lib/decimal.jar;lib/webp4j-1.2.0.jar</classpath>
                 <built-to>build</built-to>
                 <built-to>reports</built-to>
                 <built-to>dist</built-to>
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/FrameExporter.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/FrameExporter.java
index 0e2d7abd9..ce675957b 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/FrameExporter.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/FrameExporter.java
@@ -566,7 +566,7 @@ public class FrameExporter {
                             BufferedImage img = frameImages.next();
                             if (img != null) {
                                 try (FileOutputStream fos = new FileOutputStream(f)) {
-                                    fos.write(WebPCodec.encodeImage(img, 100f));
+                                    fos.write(WebPCodec.encodeLosslessImage(img));
                                 }
                             }
                             ret.add(f);
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/ImageExporter.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/ImageExporter.java
index b22b7d5c7..1a20e8778 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/ImageExporter.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/ImageExporter.java
@@ -129,7 +129,13 @@ public class ImageExporter {
                         BMPFile.saveBitmap(imageTag.getImageCached().getBufferedImage(), file);
                     } else if (ffileFormat == ImageFormat.WEBP) {
                         try (OutputStream fos = new BufferedOutputStream(new FileOutputStream(file))) {
-                            fos.write(WebPCodec.encodeImage(imageTag.getImageCached().getBufferedImage(), 100f));
+                            byte[] webPData;
+                            if (originalFormat == ImageFormat.PNG || originalFormat == ImageFormat.GIF) {
+                                webPData = WebPCodec.encodeLosslessImage(imageTag.getImageCached().getBufferedImage());
+                            } else {
+                                webPData = WebPCodec.encodeImage(imageTag.getImageCached().getBufferedImage(), 100f);
+                            }
+                            fos.write(webPData);
                         }
                     } else {
                         ImageHelper.write(imageTag.getImageCached().getBufferedImage(), ffileFormat, file);
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/MorphShapeExporter.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/MorphShapeExporter.java
index 398df45d2..791592515 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/MorphShapeExporter.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/MorphShapeExporter.java
@@ -209,7 +209,7 @@ public class MorphShapeExporter {
                                 ImageHelper.write(img.getBufferedImage(), ImageFormat.PNG, fileEnd);
                             } else if (settings.mode == MorphShapeExportMode.WEBP_START_END) {
                                 try (FileOutputStream fos = new FileOutputStream(fileEnd)) {
-                                    fos.write(WebPCodec.encodeImage(img.getBufferedImage(), 100f));
+                                    fos.write(WebPCodec.encodeLosslessImage(img.getBufferedImage()));
                                 }
                             } else {
                                 BMPFile.saveBitmap(img.getBufferedImage(), fileEnd);
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/ShapeExporter.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/ShapeExporter.java
index 9349343e9..ed9695d53 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/ShapeExporter.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/ShapeExporter.java
@@ -141,7 +141,7 @@ public class ShapeExporter {
                                 ImageHelper.write(img.getBufferedImage(), ImageFormat.PNG, file);
                             } else if (settings.mode == ShapeExportMode.WEBP) {
                                 try (FileOutputStream fos = new FileOutputStream(file)) {
-                                    fos.write(WebPCodec.encodeImage(img.getBufferedImage(), 100f));
+                                    fos.write(WebPCodec.encodeLosslessImage(img.getBufferedImage()));
                                 }
                             } else {
                                 BMPFile.saveBitmap(img.getBufferedImage(), file);
diff --git a/nbproject/project.xml b/nbproject/project.xml
index 849b5e675..d437d13b9 100644
--- a/nbproject/project.xml
+++ b/nbproject/project.xml
@@ -329,7 +329,7 @@
         <java-data xmlns="http://www.netbeans.org/ns/freeform-project-java/4">
             <compilation-unit>
                 <package-root>src</package-root>
-                <classpath mode="compile">lib/jpproxy.jar;lib/trident-6.2.jar;lib/substance-flamingo-6.2.jar;lib/flamingo-6.2.jar;lib/substance-fix.jar;lib/substance-6.2.jar;libsrc/ffdec_lib/src;lib/tablelayout.jar;lib/jsyntaxpane-0.9.5.jar;lib/JavactiveX.jar;lib/flashdebugger.jar;lib/treetable.jar;lib/minimal-json-0.9.5.jar;libsrc/ffdec_lib/lib/gnujpdf.jar;libsrc/ffdec_lib/lib/jna-3.5.1.jar;libsrc/ffdec_lib/lib/jna-platform-3.5.1.jar;libsrc/ffdec_lib/lib/flashdebugger.jar;lib/gifreader.jar;lib/jansi-2.4.0.jar;lib/decimal.jar;lib/webp4j-1.1.0.jar</classpath>
+                <classpath mode="compile">lib/jpproxy.jar;lib/trident-6.2.jar;lib/substance-flamingo-6.2.jar;lib/flamingo-6.2.jar;lib/substance-fix.jar;lib/substance-6.2.jar;libsrc/ffdec_lib/src;lib/tablelayout.jar;lib/jsyntaxpane-0.9.5.jar;lib/JavactiveX.jar;lib/flashdebugger.jar;lib/treetable.jar;lib/minimal-json-0.9.5.jar;libsrc/ffdec_lib/lib/gnujpdf.jar;libsrc/ffdec_lib/lib/jna-3.5.1.jar;libsrc/ffdec_lib/lib/jna-platform-3.5.1.jar;libsrc/ffdec_lib/lib/flashdebugger.jar;lib/gifreader.jar;lib/jansi-2.4.0.jar;lib/decimal.jar;lib/webp4j-1.2.0.jar</classpath>
                 <built-to>build</built-to>
                 <built-to>javadoc</built-to>
                 <built-to>reports</built-to>