diff --git a/.gitattributes b/.gitattributes
index d80024f..1adb868 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,4 +1,5 @@
-* text=auto
+* text=auto eol=lf
+
 *.md diff=markdown
 *.php diff=php
 /.github export-ignore
diff --git a/src/Request.php b/src/Request.php
index a708933..d4d7be9 100644
--- a/src/Request.php
+++ b/src/Request.php
@@ -78,11 +78,20 @@ public function getBody(): array
      * {@inheritDoc}
      */
     public function addFile(string $fieldName, string $path): static
+    {
+        return $this->addRawFile($fieldName, (string) file_get_contents($path));
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function addRawFile(string $fieldName, string $contents): static
     {
         $this->contentType = ContentType::MULTIPART;
+
         $this->files[] = [
-            'fieldName' => $fieldName,
-            'path' => $path,
+            $fieldName,
+            $contents,
         ];
 
         return $this;
@@ -93,16 +102,7 @@ public function addFile(string $fieldName, string $path): static
      */
     public function getFiles(): array
     {
-        $data = [];
-
-        foreach ($this->files as $file) {
-            $data[] = [
-                $file['fieldName'],
-                file_get_contents($file['path']),
-            ];
-        }
-
-        return $data;
+        return $this->files;
     }
 
     /**
diff --git a/src/RequestInterface.php b/src/RequestInterface.php
index 5f7224f..49dffaa 100644
--- a/src/RequestInterface.php
+++ b/src/RequestInterface.php
@@ -24,12 +24,19 @@ public function getUrl(): string;
     public function getBody(): array;
 
     /**
-     * Add a file to the request data.
+     * Add a file from a given path to the request payload.
      *
      * @return $this
      */
     public function addFile(string $fieldName, string $path): static;
 
+    /**
+     * Add a file using its raw contents to the request payload.
+     *
+     * @return $this
+     */
+    public function addRawFile(string $fieldName, string $contents): static;
+
     /**
      * Get an array of files attached to the request.
      */