diff --git a/Cargo.lock b/Cargo.lock
index 001b237..132f064 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -87,6 +87,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bfaff671f6b22ca62406885ece523383b9b64022e341e53e009a62ebc47a45f2"
 dependencies = [
  "clap_builder",
+ "clap_derive",
 ]
 
 [[package]]
@@ -101,6 +102,18 @@ dependencies = [
  "strsim",
 ]
 
+[[package]]
+name = "clap_derive"
+version = "4.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf9804afaaf59a91e75b022a30fb7229a7901f60c755489cc61c9b423b836442"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "clap_lex"
 version = "0.6.0"
@@ -192,6 +205,12 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "heck"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+
 [[package]]
 name = "libc"
 version = "0.2.151"
@@ -232,6 +251,24 @@ dependencies = [
  "adler",
 ]
 
+[[package]]
+name = "proc-macro2"
+version = "1.0.70"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+dependencies = [
+ "proc-macro2",
+]
+
 [[package]]
 name = "rayon"
 version = "1.8.0"
@@ -280,6 +317,17 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
+[[package]]
+name = "syn"
+version = "2.0.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c8b28c477cc3bf0e7966561e3460130e1255f7a1cf71931075f1c5e7a7e269"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "tar"
 version = "0.4.40"
@@ -291,6 +339,12 @@ dependencies = [
  "xattr",
 ]
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+
 [[package]]
 name = "utf8parse"
 version = "0.2.1"
diff --git a/Cargo.toml b/Cargo.toml
index c682c95..54a684c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-clap = "4.4"
+clap = { version = "4.4", features = ["derive"] }
 flate2 = "1.0"
 rayon = "1.8.0"
 tar = "0.4"
diff --git a/src/main.rs b/src/main.rs
index be755ef..5d28bd2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,6 @@
 use std::fs::File;
 use std::{fs, io, sync::Arc};
-use std::path::Path;
+use std::path::{Path, PathBuf};
 use flate2::read::GzDecoder;
 use tar::Archive;
 use std::collections::HashMap;
@@ -10,6 +10,23 @@ use std::io::prelude::*;
 use std::io::BufReader;
 use std::process::Command;
 use rayon::prelude::*;
+use clap::Parser;
+
+/// Program for unpacking unitypackages files.
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    /// .unitypackage file to extract
+    #[arg(short, long)]
+    input: PathBuf,
+    /// target directory
+    #[arg(short, long)]
+    output: PathBuf,
+
+    /// optional- path to the tool that will auto convert fbx files to gltf during unpacking
+    #[arg(short,long)]
+    fbx_to_gltf: Option<PathBuf>
+}
 
 pub fn extract_archive(archive_path: &Path, extract_to: &Path) -> io::Result<()> {
     let tar_gz = File::open(archive_path)?;
@@ -20,9 +37,13 @@ pub fn extract_archive(archive_path: &Path, extract_to: &Path) -> io::Result<()>
 }
 
 fn main() {
-    let archive_path = Path::new("C:\\PROJECTS\\lwa_unity_unpack\\POLYGON_Snow_Kit_Unity_2020_3_v1_4.unitypackage");
+    let args = Args::parse();
+    let archive_path = Path::new(&args.input);
     let tmp_dir = Path::new("./tmp_dir");
-    let output_dir = Path::new("./output");
+    let output_dir = Path::new(&args.output);
+    if !archive_path.exists() {
+        panic!("Input file does not exits");
+    }
     if tmp_dir.exists() {
         println!("Temp directory exits, cleaning up first.");
         fs::remove_dir_all(tmp_dir).unwrap();
@@ -78,9 +99,11 @@ fn main() {
         process_directory(asset_hash, asset_path, &result_path);
         check_source_asset_exists(&source_asset);
 
-        if let Some("fbx") = path.extension().and_then(OsStr::to_str) {
-            process_fbx_file(&source_asset, &result_path);
-            return;
+        if args.fbx_to_gltf.is_some() {
+            if let Some("fbx") = path.extension().and_then(OsStr::to_str) {
+                process_fbx_file(&source_asset, &result_path, &args.fbx_to_gltf.clone().unwrap());
+                return;
+            }
         }
 
         process_non_fbx_file(&source_asset, &result_path);
@@ -102,10 +125,10 @@ fn main() {
         }
     }
 
-    fn process_fbx_file(source_asset: &Path, result_path: &Path) {
+    fn process_fbx_file(source_asset: &Path, result_path: &Path, tool: &PathBuf) {
         let out_path = result_path.with_extension("");
         println!("{:?}", &["--input", source_asset.to_str().unwrap(), "--output", out_path.to_str().unwrap()]);
-        let output = Command::new("C:\\tools\\FBX2glTF.exe")
+        let output = Command::new(tool)
             .args(&["--input", source_asset.to_str().unwrap(), "-b", "--output", out_path.to_str().unwrap()])
             .output().unwrap();
         let output_result = String::from_utf8_lossy(&output.stdout);