diff --git a/composer.json b/composer.json
index 456fc35..cd6c109 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
   "name": "codeinc/pdf2txt-client",
-  "version": "v1.5",
+  "version": "v1.6",
   "description": "A PHP client for the pdf2txt service",
   "homepage": "https://github.com/codeinchq/pdf2txt-php-client",
   "type": "library",
diff --git a/src/Pdf2TxtClient.php b/src/Pdf2TxtClient.php
index 33ce1df..a35eb4f 100644
--- a/src/Pdf2TxtClient.php
+++ b/src/Pdf2TxtClient.php
@@ -22,31 +22,43 @@
 use Psr\Http\Message\StreamInterface;
 
 /**
- * Class Pdf2TxtClient
+ * Class Pdf2TxtClient provides a simple way to interact with the Pdf2Txt API.
  *
  * @package CodeInc\Pdf2TxtClient
- * @link https://github.com/codeinchq/pdf2txt
- * @link https://github.com/codeinchq/pdf2txt-php-client
+ * @link    https://github.com/codeinchq/pdf2txt
+ * @link    https://github.com/codeinchq/pdf2txt-php-client
  * @license https://opensource.org/licenses/MIT MIT
  */
-class Pdf2TxtClient
+readonly class Pdf2TxtClient
 {
+    public ClientInterface $client;
+    public StreamFactoryInterface $streamFactory;
+    public RequestFactoryInterface $requestFactory;
+
+    /**
+     * Pdf2TxtClient constructor.
+     *
+     * @param string $baseUrl
+     * @param ClientInterface|null $client
+     * @param StreamFactoryInterface|null $streamFactory
+     * @param RequestFactoryInterface|null $requestFactory
+     */
     public function __construct(
-        private readonly string $baseUrl,
-        private ClientInterface|null $client = null,
-        private StreamFactoryInterface|null $streamFactory = null,
-        private RequestFactoryInterface|null $requestFactory = null,
+        private string $baseUrl,
+        ClientInterface|null $client = null,
+        StreamFactoryInterface|null $streamFactory = null,
+        RequestFactoryInterface|null $requestFactory = null,
     ) {
-        $this->client ??= Psr18ClientDiscovery::find();
-        $this->streamFactory ??= Psr17FactoryDiscovery::findStreamFactory();
-        $this->requestFactory ??= Psr17FactoryDiscovery::findRequestFactory();
+        $this->client = $client ?? Psr18ClientDiscovery::find();
+        $this->streamFactory = $streamFactory ?? Psr17FactoryDiscovery::findStreamFactory();
+        $this->requestFactory ??= $requestFactory ?? Psr17FactoryDiscovery::findRequestFactory();
     }
 
     /**
      * Converts a PDF to text using streams and the PDF2TEXT API.
      *
      * @param StreamInterface|resource|string $stream The PDF content.
-     * @param ConvertOptions $options The convert options.
+     * @param ConvertOptions $options                 The convert options.
      * @return StreamInterface
      * @throws Exception
      */
@@ -121,46 +133,6 @@ public function processJsonResponse(StreamInterface $response): array
         );
     }
 
-    /**
-     * Opens a local file and creates a stream from it.
-     *
-     * @param string $path The path to the file.
-     * @param string $openMode The mode used to open the file.
-     * @return StreamInterface
-     * @throws Exception
-     */
-    public function createStreamFromFile(string $path, string $openMode = 'r'): StreamInterface
-    {
-        $f = fopen($path, $openMode);
-        if ($f === false) {
-            throw new Exception("The file '$path' could not be opened", Exception::ERROR_FILE_OPEN);
-        }
-
-        return $this->streamFactory->createStreamFromResource($f);
-    }
-
-    /**
-     * Saves a stream to a local file.
-     *
-     * @param StreamInterface $stream
-     * @param string $path The path to the file.
-     * @param string $openMode The mode used to open the file.
-     * @throws Exception
-     */
-    public function saveStreamToFile(StreamInterface $stream, string $path, string $openMode = 'w'): void
-    {
-        $f = fopen($path, $openMode);
-        if ($f === false) {
-            throw new Exception("The file '$path' could not be opened", Exception::ERROR_FILE_OPEN);
-        }
-
-        if (stream_copy_to_stream($stream->detach(), $f) === false) {
-            throw new Exception("The stream could not be copied to the file '$path'", Exception::ERROR_FILE_WRITE);
-        }
-
-        fclose($f);
-    }
-
     /**
      * Returns the convert endpoint URI.
      *
diff --git a/tests/Pdf2TxtClientTest.php b/tests/Pdf2TxtClientTest.php
index 8fbcd00..8ce4dd6 100644
--- a/tests/Pdf2TxtClientTest.php
+++ b/tests/Pdf2TxtClientTest.php
@@ -38,7 +38,7 @@ public function testExtractionFromLocalFileToText(): void
     {
         $client = $this->getNewClient();
 
-        $stream = $client->extract($client->createStreamFromFile(self::TEST_PDF_PATH));
+        $stream = $client->extract($client->streamFactory->createStreamFromFile(self::TEST_PDF_PATH));
         $this->assertInstanceOf(StreamInterface::class, $stream, "The stream is not valid");
 
         $text = (string)$stream;
@@ -54,7 +54,7 @@ public function testExtractionFromLocalFileToRawJson(): void
         $client = $this->getNewClient();
 
         $stream = $client->extract(
-            $client->createStreamFromFile(self::TEST_PDF_PATH),
+            $client->streamFactory->createStreamFromFile(self::TEST_PDF_PATH),
             new ConvertOptions(format: Format::json)
         );
         $this->assertInstanceOf(StreamInterface::class, $stream, "The stream is not valid");
@@ -72,7 +72,7 @@ public function testExtractionFromLocalFileToProcessedJson(): void
         $client = $this->getNewClient();
 
         $stream = $client->extract(
-            $client->createStreamFromFile(self::TEST_PDF_PATH),
+            $client->streamFactory->createStreamFromFile(self::TEST_PDF_PATH),
             new ConvertOptions(format: Format::json)
         );
         $this->assertInstanceOf(StreamInterface::class, $stream, "The stream is not valid");