diff --git a/tools/mkfsdata.py b/tools/mkfsdata.py
new file mode 100755
index 0000000000..dc504446cc
--- /dev/null
+++ b/tools/mkfsdata.py
@@ -0,0 +1,183 @@
+#!/usr/bin/env python3
+
+"""
+tools/mkfsdata.py
+
+Copyright (c) 2024 Alexey Matveev
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+"""
+
+import argparse
+import logging
+from pathlib import Path
+from typing import Iterator, List, Optional, TextIO, Tuple
+
+
+def get_files(dirname: Path) -> Iterator[Tuple[Path, str]]:
+    """
+    Generator return files in the directory dirname
+    """
+    for p in dirname.glob("**/*"):
+        if p.is_file():
+            relative_full_path = "/" + str(p.relative_to(dirname))
+            yield p, relative_full_path
+
+
+def conver_c_name(prefix: str, r_full_path: str) -> str:
+    """
+    Convert file name to C variable name
+    """
+    return "{}{}".format(prefix, r_full_path.replace(".", "_").replace("/", "_"))
+
+
+def write_f_data(
+    fd: TextIO,
+    file: Path,
+    r_full_path: str,
+    is_add_progmem: bool = False,
+):
+    """
+    Write file as hex dump
+
+    Args:
+        file - source file
+        is_add_progmem - add PROGMEM, for AVR
+    """
+    rs_name = conver_c_name("data", r_full_path)
+    st_progmem = "PROGMEM " if is_add_progmem else ""
+    fd.write(
+        f"static const unsigned char {rs_name}[] {st_progmem}=\n"
+        "{\n"
+        f"  /* {r_full_path} */\n\n"
+    )
+
+    # write file name
+    result = "  "
+    for ch in r_full_path:
+        result += "0x{0:02x}, ".format(ord(ch))
+    result += "0x00,"
+    fd.write(result)
+
+    # write file content
+    with open(file, "rb") as f_data:
+        for j, ch in enumerate(iter(lambda: f_data.read(1), b"")):
+            if j % 10 == 0:
+                fd.write("\n")
+                fd.write("  ")
+            fd.write("0x{0:02x}, ".format(ch[0]))
+        fd.write("\n")
+
+    # End
+    fd.write("};\n")
+
+
+def write_s_data(
+    fd: TextIO,
+    r_full_path: str,
+    prev_file: Optional[str],
+    is_replace_to_root: bool = False,
+):
+    """
+    Write struct httpd_fsdata_file
+    """
+    if is_replace_to_root:
+        st_name = "g_httpdfs_root"
+    else:
+        st_name = conver_c_name("file", r_full_path)
+
+    if prev_file is None:
+        st_prev_name = "NULL"
+    else:
+        st_prev_name = conver_c_name("file", prev_file)
+    rs_name = conver_c_name("data", r_full_path)
+    n_len = len(r_full_path) + 1
+    fd.write(
+        f"const struct httpd_fsdata_file {st_name}[] =\n"
+        "    {{"
+        f"{st_prev_name}, {rs_name}, {rs_name} + {n_len}, "
+        f"sizeof({rs_name}) - {n_len}"
+        "}};\n\n"
+    )
+
+
+def main():
+    logging.basicConfig(level=logging.INFO, format="%(message)s")
+    logger = logging.getLogger()
+
+    args = parser().parse_args()
+
+    # Get files
+    files: List[Tuple[Path, str]] = []
+    for file, r_full_path in get_files(args.dirname):
+        logger.info(f"Adding file {r_full_path}")
+        files.append((file, r_full_path))
+
+    with args.out.open("w") as fd:
+        # write header
+        fd.write(
+            '#include "netutils/httpd.h"\n'
+            "\n"
+            "#ifndef NULL\n"
+            "  #define NULL 0\n"
+            "#endif\n\n"
+        )
+
+        # write content
+        for file, r_full_path in files:
+            write_f_data(fd, file, r_full_path, args.add_progmem)
+            fd.write("\n")  # Add empty line beetween files
+
+        # write list of files
+        prev_file = None
+        for j, (file, r_full_path) in enumerate(files):
+            write_s_data(
+                fd=fd,
+                r_full_path=r_full_path,
+                prev_file=prev_file,
+                is_replace_to_root=j == len(files) - 1,
+            )
+            prev_file = r_full_path
+
+        # end
+        fd.write(f"const int g_httpd_numfiles = {len(files)};\n")
+
+
+def parser() -> argparse.ArgumentParser:
+    """Create parser"""
+    parser = argparse.ArgumentParser(description="Create C file with data for httpd")
+    parser.add_argument(
+        "-d",
+        "--dirname",
+        default="httpd-fs",
+        type=Path,
+        help="Directory with files to add",
+    )
+    parser.add_argument(
+        "-o",
+        "--out",
+        default="httpd_fsdata.c",
+        type=Path,
+        help="Output C file",
+    )
+    parser.add_argument(
+        "--add-progmem",
+        action="store_true",
+        help="Add PROGMEM to data",
+    )
+    return parser
+
+
+if __name__ == "__main__":
+    main()