diff --git a/src/ObsAdapter.php b/src/ObsAdapter.php
index 81777db..45e7bff 100644
--- a/src/ObsAdapter.php
+++ b/src/ObsAdapter.php
@@ -8,6 +8,7 @@
 use League\Flysystem\Adapter\AbstractAdapter;
 use League\Flysystem\AdapterInterface;
 use League\Flysystem\Config;
+use League\Flysystem\Util;
 use Obs\ObsClient;
 use Obs\ObsException;
 
@@ -31,7 +32,20 @@ class ObsAdapter extends AbstractAdapter
     /**
      * @var string[]
      */
-    protected static $metaOptions = ['ACL', 'Expires', 'StorageClass'];
+    protected static $metaOptions = [
+        'ACL',
+        'StorageClass',
+        'ContentType',
+        'ContentLength',
+        'Metadata',
+        'WebsiteRedirectLocation',
+        'SseKms',
+        'SseKmsKey',
+        'SseC',
+        'SseCKey',
+        'Expires',
+        'SuccessRedirect',
+    ];
 
     /**
      * @var string
@@ -109,6 +123,22 @@ public function write($path, $contents, Config $config)
         $path = $this->applyPathPrefix($path);
 
         $options = $this->getOptionsFromConfig($config);
+        if (! isset($options['ACL'])) {
+            /** @var string|null $visibility */
+            $visibility = $config->get('visibility');
+            if ($visibility !== null) {
+                $options['ACL'] = $options['ACL'] ?? ($visibility === self::VISIBILITY_PUBLIC ? ObsClient::AclPublicRead : ObsClient::AclPrivate);
+            }
+        }
+
+        $shouldDetermineMimetype = $contents !== '' && ! \array_key_exists('ContentType', $options);
+
+        if ($shouldDetermineMimetype) {
+            $mimeType = Util::guessMimeType($path, $contents);
+            if ($mimeType) {
+                $options['ContentType'] = $mimeType;
+            }
+        }
 
         try {
             $this->client->putObject(array_merge($options, [
@@ -273,7 +303,7 @@ public function createDir($dirname, Config $config)
     {
         $defaultFile = trim($dirname, '/') . '/';
 
-        return $this->write($defaultFile, null, $config);
+        return $this->write($defaultFile, '', $config);
     }
 
     /**
@@ -724,11 +754,11 @@ public function signUrl($path, $expiration, array $options = [], $method = 'GET'
                 'Expires' => $expires,
                 'QueryParams' => $options,
             ]);
+
             return $model['SignedUrl'];
         } catch (ObsException $obsException) {
             return false;
         }
-
     }
 
     /**
diff --git a/tests/MockAdapterTest.php b/tests/MockAdapterTest.php
index 1d35644..23b14c6 100644
--- a/tests/MockAdapterTest.php
+++ b/tests/MockAdapterTest.php
@@ -36,6 +36,7 @@ protected function setUp(): void
                     'Bucket' => 'test',
                     'Key' => 'fixture/read.txt',
                     'Body' => 'read-test',
+                    'ContentType' => 'text/plain',
                 ],
             ])->andReturn(new Model([]));
         $this->obsAdapter->write('fixture/read.txt', 'read-test', new Config());
@@ -49,6 +50,7 @@ public function testUpdate(): void
                     'Bucket' => 'test',
                     'Key' => 'file.txt',
                     'Body' => 'update',
+                    'ContentType' => 'text/plain',
                 ],
             ])->andReturn(new Model());
         $this->obsAdapter->update('file.txt', 'update', new Config());
@@ -72,6 +74,7 @@ public function testUpdateStream(): void
                     'Bucket' => 'test',
                     'Key' => 'file.txt',
                     'Body' => 'write',
+                    'ContentType' => 'text/plain',
                 ],
             ])->andReturn(new Model());
         $this->obsAdapter->write('file.txt', 'write', new Config());
@@ -81,6 +84,7 @@ public function testUpdateStream(): void
                     'Bucket' => 'test',
                     'Key' => 'file.txt',
                     'Body' => 'update',
+                    'ContentType' => 'text/plain',
                 ],
             ])->andReturn(new Model());
         $this->obsAdapter->updateStream('file.txt', $this->streamFor('update')->detach(), new Config());
@@ -102,6 +106,7 @@ private function mockPutObject($path, $body, $visibility = null): void
             'Bucket' => 'test',
             'Key' => $path,
             'Body' => $body,
+            'ContentType' => 'text/plain',
         ];
         if ($visibility !== null) {
             $arg = array_merge($arg, [
@@ -154,7 +159,7 @@ public function testCreateDir(): void
                 [
                     'Bucket' => 'test',
                     'Key' => 'path/',
-                    'Body' => null,
+                    'Body' => '',
                 ],
             ])->andReturn(new Model());
         $this->obsAdapter->createDir('path', new Config());
@@ -228,6 +233,7 @@ public function testSetVisibility(): void
                     'Bucket' => 'test',
                     'Key' => 'file.txt',
                     'Body' => 'write',
+                    'ContentType' => 'text/plain',
                 ],
             ])->andReturn(new Model());
         $this->obsAdapter->write('file.txt', 'write', new Config());
@@ -545,6 +551,7 @@ public function testWriteStreamWithExpires(): void
                     'Bucket' => 'test',
                     'Key' => 'file.txt',
                     'Body' => 'write',
+                    'ContentType' => 'text/plain',
                 ],
             ])->andReturn(new Model());
         $this->obsAdapter->writeStream('file.txt', $this->streamFor('write')->detach(), new Config([