diff --git a/.gitmodules b/.gitmodules
index ed3ca68e3..8e671c6ed 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,42 +1,42 @@
 [submodule "thirdparty/jbig2dec"]
 	path = thirdparty/jbig2dec
-	url = ../jbig2dec.git
+	url = http://git.ghostscript.com/jbig2dec.git
 [submodule "thirdparty/mujs"]
 	path = thirdparty/mujs
-	url = ../mujs.git
+	url = http://git.ghostscript.com/mujs.git
 [submodule "thirdparty/freetype"]
 	path = thirdparty/freetype
-	url = ../thirdparty-freetype2.git
+	url = http://git.ghostscript.com/thirdparty-freetype2.git
 [submodule "thirdparty/gumbo-parser"]
 	path = thirdparty/gumbo-parser
-	url = ../thirdparty-gumbo-parser.git
+	url = http://git.ghostscript.com/thirdparty-gumbo-parser.git
 [submodule "thirdparty/harfbuzz"]
 	path = thirdparty/harfbuzz
-	url = ../thirdparty-harfbuzz.git
+	url = http://git.ghostscript.com/thirdparty-harfbuzz.git
 [submodule "thirdparty/jpeg"]
 	path = thirdparty/libjpeg
-	url = ../thirdparty-libjpeg.git
+	url = http://git.ghostscript.com/thirdparty-libjpeg.git
 [submodule "thirdparty/lcms2"]
 	path = thirdparty/lcms2
-	url = ../thirdparty-lcms2.git
+	url = http://git.ghostscript.com/thirdparty-lcms2.git
 [submodule "thirdparty/openjpeg"]
 	path = thirdparty/openjpeg
-	url = ../thirdparty-openjpeg.git
+	url = http://git.ghostscript.com/thirdparty-openjpeg.git
 [submodule "thirdparty/zlib"]
 	path = thirdparty/zlib
-	url = ../thirdparty-zlib.git
+	url = http://git.ghostscript.com/thirdparty-zlib.git
 [submodule "thirdparty/curl"]
 	path = thirdparty/curl
-	url = ../thirdparty-curl.git
+	url = http://git.ghostscript.com/thirdparty-curl.git
 [submodule "thirdparty/freeglut"]
 	path = thirdparty/freeglut
-	url = ../thirdparty-freeglut.git
+	url = http://git.ghostscript.com/thirdparty-freeglut.git
 [submodule "thirdparty/tesseract"]
 	path = thirdparty/tesseract
-	url = ../thirdparty-tesseract.git
+	url = http://git.ghostscript.com/thirdparty-tesseract.git
 [submodule "thirdparty/leptonica"]
 	path = thirdparty/leptonica
-	url = ../thirdparty-leptonica.git
+	url = http://git.ghostscript.com/thirdparty-leptonica.git
 [submodule "thirdparty/extract"]
 	path = thirdparty/extract
-	url = ../extract.git
+	url = http://git.ghostscript.com/extract.git
diff --git a/CHANGES b/CHANGES
index 282449608..2893d2994 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,50 @@
+List of changes in MuPDF 1.19.0
+
+	Removed support for Luratech JBIG2 and JPEG2000 decoders.
+
+	Added 'extract' library for more output options:
+		Added DOCX output format
+		Added ODT output format
+
+	Notable new features:
+		Journal for undo and redo
+		Snapshot for auto-save and restore (for backgrounding mobile apps)
+		Reflow document wrapper
+		Rollover appearance for annotations and widgets
+		Customize appearance of signed digital signatures
+		Progress and cancel callbacks to OCR functions
+		Create signature form fields
+
+	Minor new features:
+		Support CJK fonts in pdfwrite output
+		Support JBIG2 images in pdfwrite output
+		Support opacity for all markup annotation types
+		High-DPI aware UI in mupdf-gl
+		mutool extract -a option to embed SMasks as alpha channel
+
+	API changes:
+		Removed pdf_widget type alias (was always same as pdf_annot)
+		Updated annotation 'dirty' logic
+		Fix typo in function and type names: designated name -> distinguished name
+		More functions available to 'mutool run'
+		More functions available to Java library
+
+	New unicode scripts and fonts for EPUB:
+		Dogra, Elymaic, Gondi, Hanifi Rohingya, Masaram Gondi,
+		Medefaidrin, Nushu, Nyiakeng Puachue Hmong, Old Sogdian,
+		Sogdian, Soyombo, Wancho, Yezidi, and Zanabazar Square.
+
+	C++ and Python bindings:
+		C++ and Python bindings now work on Windows.
+		Python bindings are available as pre-built binaries on pypi.org.
+		Added demo PDF viewer using the Python MuPDF bindings and PyQt.
+
+		Better access to data in generated wrapper classes.
+		Improved handling of out-parameters in generated Python.
+		Text representation of POD types via C++ operator<< and Python str().
+		Fixed ref-counting bug in iterators.
+		Updates for new MuPDF functions.
+
 List of changes in MuPDF 1.18.0
 
 	mutool draw: bbox output format.
diff --git a/Makerules b/Makerules
index 0dc532d22..0fdaecb17 100644
--- a/Makerules
+++ b/Makerules
@@ -145,6 +145,16 @@ else ifeq ($(OS),MACOS)
   LD = xcrun ld
   RANLIB = xcrun ranlib
 
+  ifeq (, $(shell which pkg-config))
+    $(warning "No pkg-config found, install it for proper integration of libcrypto")
+  else
+    HAVE_LIBCRYPTO := $(shell pkg-config --exists 'libcrypto >= 1.1.0' && echo yes)
+    ifeq ($(HAVE_LIBCRYPTO),yes)
+	  LIBCRYPTO_CFLAGS := $(shell pkg-config --cflags libcrypto) -DHAVE_LIBCRYPTO
+	  LIBCRYPTO_LIBS := $(shell pkg-config --libs libcrypto)
+    endif
+  endif
+
 else ifeq ($(OS),Linux)
   HAVE_OBJCOPY := yes
 
diff --git a/Makethird b/Makethird
index b782463cf..cbf12486b 100644
--- a/Makethird
+++ b/Makethird
@@ -244,18 +244,27 @@ THIRD_SRC += $(EXTRACT_SRC)
 $(OUT)/thirdparty/extract/%.o: thirdparty/extract/%.c
 	$(CC_CMD) $(WARNING_CFLAGS) $(LIB_CFLAGS) $(EXTRACT_CFLAGS) $(ZLIB_CFLAGS) $(EXTRACT_BUILD_CFLAGS)
 
+# The first python3 command in the next two rules returns 0 (success) iff
+# python3 exists and is version 3.6 or later.
+
 thirdparty/extract/src/docx_template.c: thirdparty/extract/src/template.docx thirdparty/extract/src/docx_template_build.py
-	$(QUIET_GEN) python3 thirdparty/extract/src/docx_template_build.py \
-		-i thirdparty/extract/src/template.docx \
-		-n docx \
-		-o thirdparty/extract/src/docx_template
+	$(QUIET_GEN) if python3 -c 'import sys; sys.exit(sys.version_info < (3,6))'; \
+		then python3 thirdparty/extract/src/docx_template_build.py \
+			-i thirdparty/extract/src/template.docx \
+			-n docx \
+			-o thirdparty/extract/src/docx_template ; \
+		else echo python3 is older than 3.6 so not running docx_template_build.py; \
+		fi
 	@touch $@
 
 thirdparty/extract/src/odt_template.c: thirdparty/extract/src/template.odt thirdparty/extract/src/docx_template_build.py
-	$(QUIET_GEN) python3 thirdparty/extract/src/docx_template_build.py \
-		-i thirdparty/extract/src/template.odt \
-		-n odt \
-		-o thirdparty/extract/src/odt_template
+	$(QUIET_GEN) if python3 -c 'import sys; sys.exit(sys.version_info < (3,6))'; \
+		then python3 thirdparty/extract/src/docx_template_build.py \
+			-i thirdparty/extract/src/template.odt \
+			-n odt \
+			-o thirdparty/extract/src/odt_template ; \
+		else echo python3 is older than 3.6 so not running docx_template_build.py; \
+		fi
 	@touch $@
 
 generate: thirdparty/extract/src/docx_template.c
diff --git a/include/mupdf/fitz/pixmap.h b/include/mupdf/fitz/pixmap.h
index 8a139240f..856563900 100644
--- a/include/mupdf/fitz/pixmap.h
+++ b/include/mupdf/fitz/pixmap.h
@@ -294,6 +294,11 @@ void fz_clear_pixmap(fz_context *ctx, fz_pixmap *pix);
 */
 void fz_invert_pixmap(fz_context *ctx, fz_pixmap *pix);
 
+/**
+	Invert the alpha fo all the pixels in a pixmap.
+*/
+void fz_invert_pixmap_alpha(fz_context *ctx, fz_pixmap *pix);
+
 /**
 	Transform the pixels in a pixmap so that luminance of each
 	pixel is inverted, and the chrominance remains unchanged (as
diff --git a/include/mupdf/fitz/version.h b/include/mupdf/fitz/version.h
index 1b5c3e0e0..2d3f6b81d 100644
--- a/include/mupdf/fitz/version.h
+++ b/include/mupdf/fitz/version.h
@@ -23,9 +23,9 @@
 #ifndef MUPDF_FITZ_VERSION_H
 #define MUPDF_FITZ_VERSION_H
 #ifndef FZ_VERSION
-#define FZ_VERSION "1.18.0"
+#define FZ_VERSION "1.19.0"
 #define FZ_VERSION_MAJOR 1
-#define FZ_VERSION_MINOR 18
+#define FZ_VERSION_MINOR 19
 #define FZ_VERSION_PATCH 0
 #endif
 #endif
diff --git a/scripts/pypackage.py b/scripts/pypackage.py
index 505ed44bb..e006ed1a6 100755
--- a/scripts/pypackage.py
+++ b/scripts/pypackage.py
@@ -497,7 +497,26 @@ def make_windows(
         prefix = item[:s+1]
         for item in items:
             assert item.startswith(prefix)
-        t.extractall()
+        def is_within_directory(directory, target):
+            
+            abs_directory = os.path.abspath(directory)
+            abs_target = os.path.abspath(target)
+        
+            prefix = os.path.commonprefix([abs_directory, abs_target])
+            
+            return prefix == abs_directory
+        
+        def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+        
+            for member in tar.getmembers():
+                member_path = os.path.join(path, member.name)
+                if not is_within_directory(path, member_path):
+                    raise Exception("Attempted Path Traversal in Tar File")
+        
+            tar.extractall(path, members, numeric_owner=numeric_owner) 
+            
+        
+        safe_extract(t)
         directory = prefix
 
     os.makedirs(out_dir, exist_ok=True)
diff --git a/source/fitz/pixmap.c b/source/fitz/pixmap.c
index b71ecfa81..496b975b0 100644
--- a/source/fitz/pixmap.c
+++ b/source/fitz/pixmap.c
@@ -964,6 +964,29 @@ fz_invert_pixmap(fz_context *ctx, fz_pixmap *pix)
 	}
 }
 
+void
+fz_invert_pixmap_alpha(fz_context *ctx, fz_pixmap *pix)
+{
+	unsigned char *s = pix->samples;
+	int x, y;
+	int n1 = pix->n - pix->alpha;
+	int n = pix->n;
+
+	if (!pix->alpha)
+		return;
+
+	for (y = 0; y < pix->h; y++)
+	{
+		s += n1;
+		for (x = 0; x < pix->w; x++)
+		{
+			*s = 255 - *s;
+			s += n;
+		}
+		s += pix->stride - pix->w * n;
+	}
+}
+
 void fz_invert_pixmap_rect(fz_context *ctx, fz_pixmap *image, fz_irect rect)
 {
 	unsigned char *p;
diff --git a/source/pdf/pdf-annot.c b/source/pdf/pdf-annot.c
index a3ec33171..c9006425a 100644
--- a/source/pdf/pdf-annot.c
+++ b/source/pdf/pdf-annot.c
@@ -2735,7 +2735,9 @@ int pdf_set_annot_field_value(fz_context *ctx, pdf_document *doc, pdf_annot *ann
 void
 pdf_set_annot_appearance(fz_context *ctx, pdf_annot *annot, const char *appearance, const char *state, fz_matrix ctm, fz_rect bbox, pdf_obj *res, fz_buffer *contents)
 {
-	pdf_obj *form, *ap, *app;
+	pdf_obj *form = NULL;
+	pdf_obj *ap, *app;
+	pdf_obj *app_name = NULL;
 
 	begin_annot_op(ctx, annot, "Set appearance stream");
 
@@ -2743,30 +2745,41 @@ pdf_set_annot_appearance(fz_context *ctx, pdf_annot *annot, const char *appearan
 		appearance = "N";
 
 	fz_var(form);
+	fz_var(app_name);
 
 	fz_try(ctx)
 	{
-		form = pdf_new_xobject(ctx, annot->page->doc, bbox, ctm, res, contents);
-		form = pdf_add_object_drop(ctx, annot->page->doc, form);
-
 		ap = pdf_dict_get(ctx, annot->obj, PDF_NAME(AP));
 		if (!ap)
 			ap = pdf_dict_put_dict(ctx, annot->obj, PDF_NAME(AP), 1);
 
 		if (!state)
-			pdf_dict_puts(ctx, ap, appearance, form);
+			form = pdf_keep_obj(ctx, pdf_dict_gets(ctx, ap, appearance));
 		else
 		{
 			if (strcmp(appearance, "N") && strcmp(appearance, "R") && strcmp(appearance, "D"))
 				fz_throw(ctx, FZ_ERROR_GENERIC, "Unknown annotation appearance");
 
-			app = pdf_dict_put_dict(ctx, ap, pdf_new_name(ctx, appearance), 2);
-			pdf_dict_puts(ctx, app, state, form);
+			app_name = pdf_new_name(ctx, appearance);
+			app = pdf_dict_get(ctx, ap, app_name);
+			if (!app)
+				app = pdf_dict_put_dict(ctx, ap, app_name, 2);
+			form = pdf_keep_obj(ctx, pdf_dict_gets(ctx, ap, appearance));
 		}
+		if (!form)
+			form = pdf_new_xobject(ctx, annot->page->doc, bbox, ctm, res, contents);
+		else
+			pdf_update_xobject(ctx, annot->page->doc, form, bbox, ctm, res, contents);
+
+		if (!state)
+			pdf_dict_puts(ctx, ap, appearance, form);
+		else
+			pdf_dict_puts(ctx, app, state, form);
 	}
 	fz_always(ctx)
 	{
 		pdf_drop_obj(ctx, form);
+		pdf_drop_obj(ctx, app_name);
 		end_annot_op(ctx, annot);
 	}
 	fz_catch(ctx)
diff --git a/source/pdf/pdf-clean.c b/source/pdf/pdf-clean.c
index e54024d64..e1071e923 100644
--- a/source/pdf/pdf-clean.c
+++ b/source/pdf/pdf-clean.c
@@ -527,8 +527,14 @@ pdf_redact_image_imp(fz_context *ctx, fz_matrix ctm, fz_image *image, fz_pixmap
 	if (!pixmap)
 	{
 		fz_pixmap *original = fz_get_pixmap_from_image(ctx, image, NULL, NULL, NULL, NULL);
+		int imagemask = image->imagemask;
+
 		fz_try(ctx)
+		{
 			pixmap = fz_clone_pixmap(ctx, original);
+			if (imagemask)
+				fz_invert_pixmap_alpha(ctx, pixmap);
+		}
 		fz_always(ctx)
 			fz_drop_pixmap(ctx, original);
 		fz_catch(ctx)
@@ -684,8 +690,13 @@ pdf_redact_image_filter_pixels(fz_context *ctx, void *opaque, fz_matrix ctm, con
 
 	if (redacted)
 	{
+		int imagemask = image->imagemask;
+
 		fz_try(ctx)
+		{
 			image = fz_new_image_from_pixmap(ctx, redacted, NULL);
+			image->imagemask = imagemask;
+		}
 		fz_always(ctx)
 			fz_drop_pixmap(ctx, redacted);
 		fz_catch(ctx)
diff --git a/source/pdf/pdf-font-add.c b/source/pdf/pdf-font-add.c
index ddba13f10..f684c3d2d 100644
--- a/source/pdf/pdf-font-add.c
+++ b/source/pdf/pdf-font-add.c
@@ -108,7 +108,7 @@ pdf_add_font_file(fz_context *ctx, pdf_document *doc, fz_font *font)
 			if (FT_Get_Sfnt_Table(font->ft_face, FT_SFNT_HEAD))
 				pdf_dict_put(ctx, obj, PDF_NAME(Subtype), PDF_NAME(OpenType));
 			else
-				pdf_dict_put(ctx, obj, PDF_NAME(Subtype), PDF_NAME(Type1C));
+				pdf_dict_put(ctx, obj, PDF_NAME(Subtype), PDF_NAME(CIDFontType0C));
 			break;
 		}
 		ref = pdf_add_object(ctx, doc, obj);
diff --git a/thirdparty/tesseract b/thirdparty/tesseract
index 1df5db947..a25ae8dc4 160000
--- a/thirdparty/tesseract
+++ b/thirdparty/tesseract
@@ -1 +1 @@
-Subproject commit 1df5db947b3ce356cfb9a80bed4e8cdd4cc340bc
+Subproject commit a25ae8dc4cc97b191bf5ea11365a05a78c566698