diff --git a/base/project.js b/base/project.js
index cfc6d8f4..781492ea 100644
--- a/base/project.js
+++ b/base/project.js
@@ -284,6 +284,7 @@ if (flags.with_nfd && (platform == "windows" || platform == "linux" || platform
 
 if (flags.with_compress) {
 	project.add_define("WITH_COMPRESS");
+	project.add_cfiles("sources/libs/untar.c");
 }
 
 if (flags.with_image_write) {
diff --git a/base/sources/iron.h b/base/sources/iron.h
index 88629f5b..5c3ebfe6 100644
--- a/base/sources/iron.h
+++ b/base/sources/iron.h
@@ -335,6 +335,7 @@ string_t *iron_get_arg(i32 index) {
 #ifdef WITH_COMPRESS
 unsigned char *iron_deflate_raw(unsigned char *data, int data_len, int *out_len, int quality);
 #define STBIW_ZLIB_COMPRESS iron_deflate_raw
+void untar_here(const char *path);
 #endif
 #define STBI_WINDOWS_UTF8
 #define STB_IMAGE_WRITE_IMPLEMENTATION
diff --git a/base/sources/libs/untar.c b/base/sources/libs/untar.c
new file mode 100644
index 00000000..2bc65dab
--- /dev/null
+++ b/base/sources/libs/untar.c
@@ -0,0 +1,318 @@
+/*
+ * This file is in the public domain.  Use it as you see fit.
+ * Originally written by Tim Kientzle, March 2009.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#if !defined(_WIN32)
+#include <unistd.h>
+#endif
+#if defined(_WIN32)
+#include <direct.h>
+#endif
+
+#define BLOCKSIZE    512
+#define MAX_PATH_LEN 1024
+
+static int system_mkdir(char *pathname, int mode) {
+#if defined(_WIN32)
+	(void)mode; /* UNUSED */
+	return _mkdir(pathname);
+#else
+	return mkdir(pathname, mode);
+#endif
+}
+
+/* Parse an octal number, ignoring leading and trailing nonsense. */
+static size_t parseoct(const char *p, size_t n) {
+	size_t i = 0;
+
+	while ((*p < '0' || *p > '7') && n > 0) {
+		++p;
+		--n;
+	}
+	while (*p >= '0' && *p <= '7' && n > 0) {
+		i *= 8;
+		i += *p - '0';
+		++p;
+		--n;
+	}
+	return (i);
+}
+
+/* Returns true if this is 512 zero bytes. */
+static int is_end_of_archive(const char *p) {
+	int n;
+	for (n = 0; n < BLOCKSIZE; ++n)
+		if (p[n] != '\0')
+			return (0);
+	return (1);
+}
+
+/* Get the directory name from the path. */
+static void get_dirname(const char *path, char *dir, size_t dir_size) {
+	strncpy(dir, path, dir_size - 1);
+	dir[dir_size - 1] = '\0';
+
+	char *last_slash = NULL;
+	char *q          = dir;
+	while (*q) {
+		if (*q == '/' || *q == '\\') {
+			last_slash = q;
+		}
+		q++;
+	}
+
+	if (last_slash != NULL) {
+		*last_slash = '\0';
+	}
+	else {
+		strcpy(dir, ".");
+	}
+}
+
+/* Create a directory using the full path, including parent directories as necessary. */
+static void create_dir_full(char *fullpath, int mode) {
+	char *p;
+	int   r;
+
+	/* Strip trailing '/' */
+	if (fullpath[strlen(fullpath) - 1] == '/')
+		fullpath[strlen(fullpath) - 1] = '\0';
+
+	/* Try creating the directory. */
+	r = system_mkdir(fullpath, mode);
+	if (r != 0) {
+		/* On failure, try creating parent directory. */
+		p = strrchr(fullpath, '/');
+		if (p == NULL) {
+#if defined(_WIN32)
+			p = strrchr(fullpath, '\\');
+#endif
+		}
+		if (p != NULL && p != fullpath) {
+			*p = '\0';
+			create_dir_full(fullpath, 0755);
+			*p = '/';
+			r  = system_mkdir(fullpath, mode);
+		}
+	}
+	if (r != 0)
+		fprintf(stderr, "Could not create directory %s\n", fullpath);
+}
+
+/* Create a file using the full path, including parent directory as necessary. */
+static FILE *create_file_full(char *fullpath, int mode) {
+	FILE *f;
+
+	f = fopen(fullpath, "wb+");
+	if (f == NULL) {
+		/* Try creating parent dir and then creating file. */
+		char *p = strrchr(fullpath, '/');
+		if (p == NULL) {
+#if defined(_WIN32)
+			p = strrchr(fullpath, '\\');
+#endif
+		}
+		if (p != NULL) {
+			*p = '\0';
+			create_dir_full(fullpath, 0755);
+			*p = '/';
+			f  = fopen(fullpath, "wb+");
+		}
+	}
+	return (f);
+}
+
+/* Verify the tar checksum. */
+static int verify_checksum(const char *p) {
+	int n, u = 0;
+	for (n = 0; n < BLOCKSIZE; ++n) {
+		if (n < 148 || n > 155)
+			/* Standard tar checksum adds unsigned bytes. */
+			u += ((unsigned char *)p)[n];
+		else
+			u += 0x20;
+	}
+	return (u == (int)parseoct(p + 148, 8));
+}
+
+/* Extract a tar archive. */
+static void untar(FILE *a, const char *path) {
+	char   buff[BLOCKSIZE];
+	char   extract_dir[MAX_PATH_LEN];
+	char   fullpath[MAX_PATH_LEN];
+	FILE  *f = NULL;
+	size_t bytes_read;
+	size_t filesize;
+	char  *override_name = NULL;
+	char  *override_link = NULL;
+
+	get_dirname(path, extract_dir, sizeof(extract_dir));
+
+	for (;;) {
+		bytes_read = fread(buff, 1, BLOCKSIZE, a);
+		if (bytes_read < BLOCKSIZE) {
+			fprintf(stderr, "Short read on %s: expected %d, got %d\n", path, BLOCKSIZE, (int)bytes_read);
+			if (override_name)
+				free(override_name);
+			if (override_link)
+				free(override_link);
+			return;
+		}
+		if (is_end_of_archive(buff)) {
+			if (override_name)
+				free(override_name);
+			if (override_link)
+				free(override_link);
+			return;
+		}
+		if (!verify_checksum(buff)) {
+			fprintf(stderr, "Checksum failure\n");
+			if (override_name)
+				free(override_name);
+			if (override_link)
+				free(override_link);
+			return;
+		}
+
+		char entry_name[MAX_PATH_LEN];
+		entry_name[0] = '\0';
+		char link_name[101];
+		link_name[0]  = '\0';
+		char typeflag = buff[156];
+		filesize      = parseoct(buff + 124, 12);
+
+		/* Handle override name from previous 'L' or 'K' */
+		if (override_name) {
+			strncpy(entry_name, override_name, MAX_PATH_LEN - 1);
+			entry_name[MAX_PATH_LEN - 1] = '\0';
+			free(override_name);
+			override_name = NULL;
+		}
+		else {
+			char short_name[101];
+			memcpy(short_name, buff, 100);
+			short_name[100] = '\0';
+			strcpy(entry_name, short_name);
+
+			/* Handle ustar prefix */
+			if (memcmp(buff + 257, "ustar", 5) == 0) {
+				char prefix[156];
+				memcpy(prefix, buff + 345, 155);
+				prefix[155] = '\0';
+				if (prefix[0] != '\0') {
+					strcpy(entry_name, prefix);
+					strcat(entry_name, "/");
+					strcat(entry_name, short_name);
+				}
+			}
+		}
+
+		if (override_link) {
+			strncpy(link_name, override_link, sizeof(link_name) - 1);
+			link_name[sizeof(link_name) - 1] = '\0';
+			free(override_link);
+			override_link = NULL;
+		}
+		else {
+			memcpy(link_name, buff + 157, 100);
+			link_name[100] = '\0';
+		}
+
+		/* Build fullpath */
+		strcpy(fullpath, extract_dir);
+		if (strcmp(extract_dir, ".") != 0 && extract_dir[0] != '\0') {
+			strcat(fullpath, "/");
+		}
+		strcat(fullpath, entry_name);
+
+		switch (typeflag) {
+		case 'L': /* GNU long name */
+		{
+			char  *longname  = (char *)malloc(filesize + 1);
+			char  *ptr       = longname;
+			size_t remaining = filesize;
+			while (remaining > 0) {
+				bytes_read = fread(buff, 1, BLOCKSIZE, a);
+				if (bytes_read < BLOCKSIZE && remaining >= BLOCKSIZE) {
+					fprintf(stderr, "Short read on longname: expected %d, got %d\n", BLOCKSIZE, (int)bytes_read);
+					free(longname);
+					return;
+				}
+				size_t to_copy = (remaining < BLOCKSIZE) ? (size_t)remaining : BLOCKSIZE;
+				memcpy(ptr, buff, to_copy);
+				ptr += to_copy;
+				remaining -= to_copy;
+			}
+			*ptr = '\0';
+			/* Find the actual string length */
+			longname[strnlen(longname, filesize)] = '\0';
+			override_name                         = longname;
+			continue; /* Skip data writing loop */
+		}
+		case '1': /* Hardlink */
+			filesize = 0;
+			break;
+		case '2': /* Symlink */
+			filesize = 0;
+			break;
+		case '3':
+			filesize = 0;
+			break;
+		case '4':
+			filesize = 0;
+			break;
+		case '5':
+			create_dir_full(fullpath, (int)parseoct(buff + 100, 8));
+			filesize = 0;
+			break;
+		case '6':
+			filesize = 0;
+			break;
+		default:
+			f = create_file_full(fullpath, (int)parseoct(buff + 100, 8));
+			break;
+		}
+		while (filesize > 0) {
+			bytes_read = fread(buff, 1, BLOCKSIZE, a);
+			if (bytes_read < BLOCKSIZE) {
+				fprintf(stderr, "Short read on %s: Expected %d, got %d\n", path, BLOCKSIZE, (int)bytes_read);
+				if (f != NULL)
+					fclose(f);
+				if (override_name)
+					free(override_name);
+				if (override_link)
+					free(override_link);
+				return;
+			}
+			if (filesize < BLOCKSIZE)
+				bytes_read = (size_t)filesize;
+			if (f != NULL) {
+				if (fwrite(buff, 1, bytes_read, f) != bytes_read) {
+					fprintf(stderr, "Failed write to %s\n", fullpath);
+					fclose(f);
+					f = NULL;
+				}
+			}
+			filesize -= bytes_read;
+		}
+		if (f != NULL) {
+			fclose(f);
+			f = NULL;
+		}
+	}
+}
+
+void untar_here(const char *path) {
+	FILE *a = fopen(path, "rb");
+	if (a == NULL)
+		fprintf(stderr, "Unable to open %s\n", path);
+	else {
+		untar(a, path);
+		fclose(a);
+	}
+}
diff --git a/paint/sources/neural_nodes/neural_node.ts b/paint/sources/neural_nodes/neural_node.ts
index 0b55cef1..9abd18ed 100644
--- a/paint/sources/neural_nodes/neural_node.ts
+++ b/paint/sources/neural_nodes/neural_node.ts
@@ -135,6 +135,14 @@ function neural_node_download(url: string) {
 			iron_sys_command("chmod +x \"" + bin + "\"");
 		}
 		/// end
+
+		if (ends_with(url, "Hunyuan3D_win64.tar")) {
+			console_toast(tr("Unpacking Hunyuan3D_win64.tar"));
+			sys_notify_on_next_frame(function() {
+				let tar: string = neural_node_dir() + "/Hunyuan3D_win64.tar";
+				untar_here(tar);
+			});
+		}
 	});
 }