--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/jbig2dec/pbm2png.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,67 @@
+/* Copyright (C) 2001-2023 Artifex Software, Inc.
+   All Rights Reserved.
+
+   This software is provided AS-IS with no warranty, either express or
+   implied.
+
+   This software is distributed under license and may not be copied,
+   modified or distributed except as expressly authorized under the terms
+   of the license contained in the file LICENSE in this distribution.
+
+   Refer to licensing information at http://www.artifex.com or contact
+   Artifex Software, Inc.,  39 Mesa Street, Suite 108A, San Francisco,
+   CA 94129, USA, for further information.
+*/
+
+/*
+    jbig2dec
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#include "config_types.h"
+#elif _WIN32
+#include "config_win32.h"
+#endif
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "jbig2.h"
+#include "jbig2_image.h"
+#include "jbig2_image_rw.h"
+
+int
+main(int argc, char *argv[])
+{
+    Jbig2Ctx *ctx;
+    Jbig2Image *image;
+    int code;
+
+    /* we need a context for the allocators */
+    ctx = jbig2_ctx_new(NULL, 0, NULL, NULL, NULL);
+
+    if (argc != 3) {
+        fprintf(stderr, "usage: %s <in.pbm> <out.png>\n\n", argv[0]);
+        return 1;
+    }
+
+    image = jbig2_image_read_pbm_file(ctx, argv[1]);
+    if (image == NULL) {
+        fprintf(stderr, "error reading pbm file '%s'\n", argv[1]);
+        return 1;
+    } else {
+        fprintf(stderr, "converting %dx%d image to png format\n", image->width, image->height);
+    }
+
+    code = jbig2_image_write_png_file(image, argv[2]);
+    if (code) {
+        fprintf(stderr, "error writing png file '%s' error %d\n", argv[2], code);
+    }
+
+    return (code);
+}