diff --git a/CompressionManager.cpp b/CompressionManager.cpp
index 0c934b8..27a2435 100644
--- a/CompressionManager.cpp
+++ b/CompressionManager.cpp
@@ -23,6 +23,9 @@ CompressionManager::CompressionManager()
 	:cctx(ZSTD_createCCtx())
 	,dctx(ZSTD_createDCtx())
 {
+	// Tu ustawienia pod kompresję
+	const int level = COMPRESSION_LEVEL;
+
 	// Ustawienia frameless
 	size_t rc = 0;
 
@@ -39,7 +42,7 @@ CompressionManager::CompressionManager()
 	rc |= ZSTD_CCtx_setParameter(cctx, ZSTD_c_dictIDFlag, 0);
 
 	// Ustawia poziom kompresji
-	rc |= ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, zstd::compression_level);
+	rc |= ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, level);
 
 	if (ZSTD_isError(rc)) {
 		std::cerr << "ZSTD_CCtx_setParameter error" << std::endl;
diff --git a/CompressionManager.h b/CompressionManager.h
index 5f747fb..83eef36 100644
--- a/CompressionManager.h
+++ b/CompressionManager.h
@@ -30,10 +30,7 @@
 #error "Wymagane zstd >= 1.4.0 dla ZSTD_c_format / ZSTD_f_zstd1_magicless"
 #endif
 
-namespace zstd
-{
-	inline constexpr short compression_level = 3;
-}
+#define COMPRESSION_LEVEL   3 
 
 class CompressionManager
 {
diff --git a/CreateCargo.cpp b/CreateCargo.cpp
index fe6f7aa..b24a880 100644
--- a/CreateCargo.cpp
+++ b/CreateCargo.cpp
@@ -22,6 +22,7 @@
 CreateCargo::CreateCargo()
 	: signature(fl::sigpak)
 	, extension(fl::extpak)
+	, version(VERSION)
 	, methodFlags(0)
 	, xxhState(XXH64_createState())
 	, offset(0)
@@ -132,11 +133,11 @@ bool CreateCargo::GetFileList(const std::string& path)
 					{
 						if (FindOnTheList(zipList, fileRef) || CheckFileExtension(fileRef, zipList))
 						{
-							pc.parameter = FindOnTheList(encList, fileRef) || CheckFileExtension(fileRef, encList) ? flag::ezd : flag::zip;
+							pc.parameter = FindOnTheList(encList, fileRef) || CheckFileExtension(fileRef, encList) ? FILE_FLAG_ZIPENC : FILE_FLAG_COMPRESS;
 						}
 						else
 						{
-							pc.parameter = FindOnTheList(encList, fileRef) || CheckFileExtension(fileRef, encList) ? flag::enc : flag::raw;
+							pc.parameter = FindOnTheList(encList, fileRef) || CheckFileExtension(fileRef, encList) ? FILE_FLAG_ENCRYPT : FILE_FLAG_RAW;
 						}
 						pc.path = PathToUnixLike(tmpPath);
 						std::cout << pc.path << " - " << pc.parameter << std::endl;
diff --git a/CreateCargo.h b/CreateCargo.h
index 279930f..958dcf2 100644
--- a/CreateCargo.h
+++ b/CreateCargo.h
@@ -72,6 +72,7 @@ public:
 private:
 	const std::string signature;
 	const std::string extension;
+	const signed char version;
 
 	uint8_t methodFlags;
 
diff --git a/DataStruct.h b/DataStruct.h
index 91bf253..75f5a79 100644
--- a/DataStruct.h
+++ b/DataStruct.h
@@ -22,15 +22,37 @@
 #include <cstdint>
 #include <string>
 
-namespace ui
-{
-	inline constexpr std::string_view title = "exPak";
-	inline constexpr std::string_view ver = "0.5";
-}
+#define EXTENSION "pak"
+#define SIGNATURE "XPAK"
+
+#define SIGNATURE_KEY_FILE "XKEY"
+
+#define VERSION	  0x03
+
+// Wielkość pojedynczego bloku strumienia
+#define CHUNK_STREAM_512KB 524288 // 512KB
+#define CHUNK_STREAM_16MB  16777216 // 16MB
+#define CHUNK_STREAM_256MB 268435456 // 256MB
+
+// Rozmiar pojedynczego bloku
+#define CHUNK_BLOCK_SIZE   131072 // 128KB
+
+#define FILE_FLAG_RAW       0x00
+#define FILE_FLAG_COMPRESS  0x0F
+#define FILE_FLAG_ENCRYPT   0xF0
+#define FILE_FLAG_ZIPENC    0xFF
+
+#define FILE_FLAG_FILTERING 0xAB
+
+//Prgoram title
+#define PROGRAM_TITLE     "eXtendet PAK"
+#define PROGRAM_VERSION   "v0.5"
+#define PROGRAM_AUTHOR    "Yanczi"
+#define PROGRAM_COMPILING "19 December 2025"
+#define PROGRAM_LICENSE   "GNU LGPL v3"
 
 // Pliki
-namespace fl
-{
+namespace fl {
 	inline constexpr std::string_view sigpak = "XPAK";
 	inline constexpr std::string_view sigkey = "XKEY";
 
diff --git a/EncryptionManager.cpp b/EncryptionManager.cpp
index a44085e..832d6e5 100644
--- a/EncryptionManager.cpp
+++ b/EncryptionManager.cpp
@@ -67,6 +67,9 @@ void EncryptionManager::generateKeys()
 
 void EncryptionManager::saveKey(const std::string& path, bool hpp)
 {
+    const std::string sig = SIGNATURE_KEY_FILE;
+    const int8_t ver = VERSION;
+
     // Wygeneruj time stamp
     std::time_t now = std::time(nullptr);
     const int time = static_cast<int>(now);
@@ -75,13 +78,14 @@ void EncryptionManager::saveKey(const std::string& path, bool hpp)
     std::vector<char> keyVec(reinterpret_cast<const char*>(key.data()),
         reinterpret_cast<const char*>(key.data()) + key.size());
 
-    const uint64_t crcKey = XXH64(keyVec.data(), keyVec.size(), 0);
+    const uint64_t crcKey = XXH64(keyVec.data(), keyVec.size(), VERSION);
 
     // Zapisz ten śmietnik do pliku KEY
     std::ofstream file(path + ".key", std::ios::binary);
     if (!file) { std::cout << "Failed to save encryption key to file" << std::endl; }
 
-    file.write(fl::sigkey.data(), fl::sigkey.length());
+    file.write(sig.data(), sig.length());
+    file.write(reinterpret_cast<const char*>(&ver), sizeof(ver));
     file.write(reinterpret_cast<const char*>(&time), sizeof(time));
     file.write(reinterpret_cast<const char*>(keyVec.data()), keyVec.size());
     file.write(reinterpret_cast<const char*>(&crcKey), sizeof(crcKey));
@@ -98,7 +102,7 @@ void EncryptionManager::saveCppHeadFile(const std::string& path)
 
     std::ofstream file(path + ".hpp");
 
-    file << "// Plik wygenerowany przez " << ui::title << " " << ui::ver << std::endl;
+    file << "// Plik wygenerowany przez " << PROGRAM_TITLE << " " << PROGRAM_VERSION << std::endl;
     file << std::endl;
     file << std::endl;
     file << "#pragma once" << std::endl;
@@ -133,15 +137,18 @@ std::string EncryptionManager::toHex(const unsigned char* data, size_t len)
 void EncryptionManager::loadKey(const std::string& path)
 {
     std::ifstream file(path + ".key", std::ios::binary);
-    std::vector<char> sig(fl::sigkey.size());
+
+    const std::string signature = SIGNATURE_KEY_FILE;
+    std::vector<char> sig(signature.size());
     int8_t ver;
     int time;
 
     // Wczytaj
     file.read(sig.data(), sig.size());
+    file.read(reinterpret_cast<char*>(&ver), sizeof(ver));
 
     // Sprawdź czy plik klucza jest poprawny
-    if (std::string(sig.begin(), sig.end()) != fl::sigkey)
+    if (std::string(sig.begin(), sig.end()) != signature || ver != VERSION)
     {
         throw std::runtime_error("Invalid key file!");
     }
@@ -154,7 +161,7 @@ void EncryptionManager::loadKey(const std::string& path)
     file.read(reinterpret_cast<char*>(&crcKey), sizeof(crcKey));
 
     // Sprawdź integralność klucza
-    if (XXH64(keyVec.data(), keyVec.size(), 0) != crcKey)
+    if (XXH64(keyVec.data(), keyVec.size(), VERSION) != crcKey)
     {
         throw std::runtime_error("Key integrity error!");
     }
diff --git a/ExtractCargo.cpp b/ExtractCargo.cpp
index c944347..3d1398a 100644
--- a/ExtractCargo.cpp
+++ b/ExtractCargo.cpp
@@ -23,7 +23,7 @@ ExtractCargo::ExtractCargo()
 	:filesLen(0)
 	, tablePosition(0)
 	, xxhState(XXH64_createState())
-	, signature(fl::sigpak)
+	, signature(SIGNATURE)
 {
 	// TODO Auto-generated constructor stub
 	XXH64_reset(xxhState, 0);
diff --git a/ViewCargo.cpp b/ViewCargo.cpp
index 9b95d12..ed04866 100644
--- a/ViewCargo.cpp
+++ b/ViewCargo.cpp
@@ -59,7 +59,8 @@ bool ViewCargo::ViewFiles(const std::string& path)
 	uint64_t tabPos = 0;
 	uint32_t tabSize = 0;
 
-	std::vector<char> magic(fl::sigpak.length());
+	const std::string signature = SIGNATURE;
+	std::vector<char> magic(signature.length());
 	int8_t cargoVer = 0;
 
 	std::ifstream cargo(path, std::ios::binary);
@@ -81,7 +82,7 @@ bool ViewCargo::ViewFiles(const std::string& path)
 	cargo.read(reinterpret_cast<char*>(&tabSize), sizeof(tabSize));
 
 	//Sprawdź czy kontener ma poprawną sygnature
-	if (std::string(magic.begin(), magic.end()) != fl::sigpak)
+	if (std::string(magic.begin(), magic.end()) != signature)
 	{
 		std::cerr << "Error: Corrupted Cargo" << std::endl;
 		cargo.close();
@@ -128,15 +129,15 @@ void ViewCargo::ShowFile(const std::string& file, const uint8_t& flag)
 	// Ustawianie checkboxów
 	switch (flag)
 	{
-	case flag::zip:
+	case FILE_FLAG_COMPRESS:
 		compresedCheck = "[x]";
 		break;
 
-	case flag::enc:
+	case FILE_FLAG_ENCRYPT:
 		encryptedCheck = "[x]";
 		break;
 
-	case flag::ezd:
+	case FILE_FLAG_ZIPENC:
 		compresedCheck = "[x]";
 		encryptedCheck = "[x]";
 		break;
diff --git a/voidcmd.cpp b/voidcmd.cpp
index 22e1520..eb20331 100644
--- a/voidcmd.cpp
+++ b/voidcmd.cpp
@@ -80,16 +80,16 @@ static bool EmptyPath(std::string path)
 }
 
 int main(int argc, char* argv[]) {
-	std::cout << ui::title << std::endl << "ver. " << ui::ver << std::endl;
-	std::cout << "Author: Yanczi" << std::endl;
-	std::cout << "License: GNU LGPL v3" << "\n" << std::endl;
+	std::string path = "";
+
+	std::cout << PROGRAM_VERSION << " Release " << PROGRAM_COMPILING << std::endl;
+	std::cout << "Author: " << PROGRAM_AUTHOR << std::endl;
+	std::cout << "License: " << PROGRAM_LICENSE << "\n" << std::endl;
 
 	CreateCargo cargo;
 	ExtractCargo extract;
 	ViewCargo viewCargo;
 
-	std::string path = "";
-
 	for (int i = 0; i < argc; ++i)
 	{
 		std::string arg = argv[i];