diff --git a/src/Filesystem/Adapters/S3Adapter.php b/src/Filesystem/Adapters/S3Adapter.php
index 16a939a..060cf01 100644
--- a/src/Filesystem/Adapters/S3Adapter.php
+++ b/src/Filesystem/Adapters/S3Adapter.php
@@ -1,21 +1,36 @@
 <?php
+declare(strict_types=1);
+
 namespace FlysystemOffload\Filesystem\Adapters;
 
 use Aws\S3\S3Client;
 use FlysystemOffload\Filesystem\AdapterInterface;
 use League\Flysystem\AwsS3V3\AwsS3V3Adapter;
 use League\Flysystem\FilesystemAdapter;
+use League\Flysystem\PathPrefixing\PathPrefixedAdapter;
+use League\MimeTypeDetection\ExtensionMimeTypeDetector;
+use League\MimeTypeDetection\MimeTypeDetector;
 use WP_Error;
 
 class S3Adapter implements AdapterInterface
 {
+    private MimeTypeDetector $mimeTypeDetector;
+
+    public function __construct(?MimeTypeDetector $mimeTypeDetector = null)
+    {
+        $this->mimeTypeDetector = $mimeTypeDetector ?? new ExtensionMimeTypeDetector();
+    }
+
     public function validate(array $settings)
     {
         $required = ['access_key', 'secret_key', 'region', 'bucket'];
 
         foreach ($required as $field) {
             if (empty($settings[$field])) {
-                return new WP_Error('flysystem_offload_invalid_s3', sprintf(__('Campo S3 faltante: %s', 'flysystem-offload'), $field));
+                return new WP_Error(
+                    'flysystem_offload_invalid_s3',
+                    sprintf(__('Campo S3 faltante: %s', 'flysystem-offload'), $field)
+                );
             }
         }
 
@@ -27,21 +42,40 @@ class S3Adapter implements AdapterInterface
         try {
             $clientConfig = [
                 'credentials' => [
-                    'key' => $settings['access_key'],
-                    'secret' => $settings['secret_key']
+                    'key'    => $settings['access_key'],
+                    'secret' => $settings['secret_key'],
                 ],
-                'region' => $settings['region'],
-                'version' => 'latest'
+                'region'  => $settings['region'],
+                'version' => 'latest',
             ];
 
-            if (!empty($settings['endpoint'])) {
-                $clientConfig['endpoint'] = $settings['endpoint'];
-                $clientConfig['use_path_style_endpoint'] = true;
+            if (! empty($settings['endpoint'])) {
+                $clientConfig['endpoint']               = rtrim($settings['endpoint'], '/');
+                $clientConfig['use_path_style_endpoint'] = (bool) ($settings['use_path_style_endpoint'] ?? true);
+            }
+
+            if (! empty($settings['http_client'])) {
+                $clientConfig['http_client'] = $settings['http_client'];
             }
 
             $client = new S3Client($clientConfig);
 
-            return new AwsS3V3Adapter($client, $settings['bucket'], $settings['prefix'] ?? '');
+            $adapter = new AwsS3V3Adapter(
+                $client,
+                $settings['bucket'],
+                '',
+                options: [],
+                mimeTypeDetector: $this->mimeTypeDetector
+            );
+
+            if (! empty($settings['prefix'])) {
+                $adapter = new PathPrefixedAdapter(
+                    $adapter,
+                    trim($settings['prefix'], '/')
+                );
+            }
+
+            return $adapter;
         } catch (\Throwable $e) {
             return new WP_Error('flysystem_offload_s3_error', $e->getMessage());
         }
diff --git a/src/Filesystem/FilesystemFactory.php b/src/Filesystem/FilesystemFactory.php
index f010f44..8570d7c 100644
--- a/src/Filesystem/FilesystemFactory.php
+++ b/src/Filesystem/FilesystemFactory.php
@@ -11,7 +11,6 @@ use FlysystemOffload\Filesystem\Adapters\OneDriveAdapter;
 use FlysystemOffload\Filesystem\Adapters\S3Adapter;
 use FlysystemOffload\Filesystem\Adapters\SftpAdapter;
 use FlysystemOffload\Filesystem\Adapters\WebdavAdapter;
-use FlysystemOffload\Helpers\PathHelper;
 use League\Flysystem\Filesystem;
 use League\Flysystem\FilesystemOperator;
 use League\Flysystem\Local\LocalFilesystemAdapter;
diff --git a/src/Helpers/PathHelper.php b/src/Helpers/PathHelper.php
index afce594..f566573 100644
--- a/src/Helpers/PathHelper.php
+++ b/src/Helpers/PathHelper.php
@@ -1,60 +1,42 @@
 <?php
+declare(strict_types=1);
+
 namespace FlysystemOffload\Helpers;
 
-class PathHelper
+final class PathHelper
 {
-    public static function normalizePrefix(string $prefix): string
-    {
-        $prefix = trim($prefix);
-        $prefix = trim($prefix, '/');
-
-        return $prefix ? $prefix . '/' : '';
-    }
+    private function __construct() {}
 
     public static function stripProtocol(string $path): string
     {
-        $path = preg_replace('#^(fly://|https?://[^/]+/uploads/?)#', '', $path);
+        return ltrim(preg_replace('#^[^:]+://#', '', $path) ?? '', '/');
+    }
 
+    public static function trimLeadingSlash(string $path): string
+    {
         return ltrim($path, '/');
     }
 
-    public static function ensureFlyProtocol(string $path): string
+    public static function trimTrailingSlash(string $path): string
     {
-        if (str_starts_with($path, 'fly://')) {
-            return $path;
-        }
-
-        $relative = self::stripProtocol($path);
-
-        return 'fly://' . $relative;
+        return rtrim($path, '/');
     }
 
-    public static function collectFilesFromAttachment(int $postId): array
+    public static function trimSlashes(string $path): string
     {
-        $files = [];
+        return trim($path, '/');
+    }
 
-        if ($mainFile = get_attached_file($postId, true)) {
-            $files[] = self::stripProtocol($mainFile);
-        }
+    public static function ensureTrailingSlash(string $path): string
+    {
+        return rtrim($path, '/') . '/';
+    }
 
-        $metadata = wp_get_attachment_metadata($postId) ?: [];
-        $dir = isset($metadata['file']) ? dirname(self::stripProtocol($metadata['file'])) : '';
+    public static function normalizeDirectory(string $path): string
+    {
+        $path = str_replace('\\', '/', $path);
+        $path = preg_replace('#/{2,}#', '/', $path) ?? $path;
 
-        if (!empty($metadata['sizes'])) {
-            foreach ($metadata['sizes'] as $size) {
-                if (!empty($size['file'])) {
-                    $files[] = trailingslashit($dir) . ltrim($size['file'], '/');
-                }
-            }
-        }
-
-        $backupSizes = get_post_meta($postId, '_wp_attachment_backup_sizes', true) ?: [];
-        foreach ($backupSizes as $size) {
-            if (!empty($size['file'])) {
-                $files[] = trailingslashit($dir) . ltrim($size['file'], '/');
-            }
-        }
-
-        return array_unique(array_filter($files));
+        return self::trimTrailingSlash($path);
     }
 }
diff --git a/src/Media/ImageEditorGD.php b/src/Media/ImageEditorGD.php
index 3bb9a55..706c205 100644
--- a/src/Media/ImageEditorGD.php
+++ b/src/Media/ImageEditorGD.php
@@ -131,7 +131,7 @@ class ImageEditorGD extends \WP_Image_Editor_GD
         }
 
         try {
-            self::$filesystem->writeStream($remotePath, $stream);
+            self::$filesystem?->writeStream($remotePath, $stream);
         } catch (\Throwable $e) {
             if (is_resource($stream)) {
                 fclose($stream);
@@ -172,7 +172,7 @@ class ImageEditorGD extends \WP_Image_Editor_GD
         }
 
         try {
-            $source = self::$filesystem->readStream($remotePath);
+            $source = self::$filesystem?->readStream($remotePath);
             if (! is_resource($source)) {
                 throw new \RuntimeException('No se pudo abrir el stream remoto.');
             }
diff --git a/src/Media/ImageEditorImagick.php b/src/Media/ImageEditorImagick.php
index fa77552..7db893f 100644
--- a/src/Media/ImageEditorImagick.php
+++ b/src/Media/ImageEditorImagick.php
@@ -11,17 +11,11 @@ if (! defined('ABSPATH')) {
     exit;
 }
 
-if (! class_exists(\WP_Image_Editor::class)) {
-    require_once ABSPATH . WPINC . '/class-wp-image-editor.php';
-}
-
 if (! class_exists(\WP_Image_Editor_Imagick::class) && file_exists(ABSPATH . WPINC . '/class-wp-image-editor-imagick.php')) {
     require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php';
 }
 
 if (! class_exists(\WP_Image_Editor_Imagick::class)) {
-    // Si la clase base no está disponible (p. ej. Imagick deshabilitado),
-    // salimos silenciosamente para permitir que WordPress siga usando GD.
     return;
 }
 
@@ -29,7 +23,7 @@ class ImageEditorImagick extends \WP_Image_Editor_Imagick
 {
     protected static ?FilesystemOperator $filesystem = null;
     protected ?string $remotePath = null;
-    protected ?string $localPath = null;
+    protected ?string $localPath  = null;
 
     public static function bootWithFilesystem(?FilesystemOperator $filesystem): void
     {
@@ -40,7 +34,7 @@ class ImageEditorImagick extends \WP_Image_Editor_Imagick
     {
         if ($this->isFlyPath($this->file) && self::$filesystem) {
             $this->remotePath = PathHelper::stripProtocol($this->file);
-            $temp = $this->downloadToTemp($this->remotePath);
+            $temp             = $this->downloadToTemp($this->remotePath);
 
             if (is_wp_error($temp)) {
                 return $temp;
@@ -137,7 +131,7 @@ class ImageEditorImagick extends \WP_Image_Editor_Imagick
         }
 
         try {
-            self::$filesystem->writeStream($remotePath, $stream);
+            self::$filesystem?->writeStream($remotePath, $stream);
         } catch (\Throwable $e) {
             if (is_resource($stream)) {
                 fclose($stream);
@@ -178,7 +172,7 @@ class ImageEditorImagick extends \WP_Image_Editor_Imagick
         }
 
         try {
-            $source = self::$filesystem->readStream($remotePath);
+            $source = self::$filesystem?->readStream($remotePath);
             if (! is_resource($source)) {
                 throw new \RuntimeException('No se pudo abrir el stream remoto.');
             }
diff --git a/src/Media/MediaHooks.php b/src/Media/MediaHooks.php
index 168557d..1e4e8ef 100644
--- a/src/Media/MediaHooks.php
+++ b/src/Media/MediaHooks.php
@@ -3,354 +3,238 @@ declare(strict_types=1);
 
 namespace FlysystemOffload\Media;
 
-use League\Flysystem\FilesystemException;
+use FlysystemOffload\Helpers\PathHelper;
 use League\Flysystem\FilesystemOperator;
-use League\Flysystem\StorageAttributes;
 use WP_Error;
 
 class MediaHooks
 {
-    private const CUSTOM_IMAGE_EDITOR = 'FlysystemOffload\\Media\\ImageEditorImagick';
-
     private ?FilesystemOperator $filesystem = null;
-    private bool $registered = false;
-    private bool $metadataMirrorInProgress = false;
+    private string $basePrefix;
+
+    private const IMAGE_EDITOR_IMAGICK = 'FlysystemOffload\\Media\\ImageEditorImagick';
+    private const IMAGE_EDITOR_GD      = 'FlysystemOffload\\Media\\ImageEditorGD';
+
+    public function __construct(string $basePrefix = '')
+    {
+        $this->basePrefix = PathHelper::trimSlashes($basePrefix);
+    }
+
+    public function register(): void
+    {
+        add_filter('upload_dir', [$this, 'filterUploadDir'], 20);
+        add_filter('wp_get_attachment_url', [$this, 'filterAttachmentUrl'], 20, 2);
+        add_filter('get_attached_file', [$this, 'filterGetAttachedFile'], 20, 2);
+        add_filter('update_attached_file', [$this, 'filterUpdateAttachedFile'], 20, 2);
+        add_filter('wp_read_image_metadata', [$this, 'ensureLocalPathForMetadata'], 5, 2);
+        add_filter('image_editors', [$this, 'filterImageEditors'], 5);
+        add_action('delete_attachment', [$this, 'handleDeleteAttachment'], 20);
+    }
 
     public function setFilesystem(?FilesystemOperator $filesystem): void
     {
         $this->filesystem = $filesystem;
 
-        if (class_exists(self::CUSTOM_IMAGE_EDITOR)) {
-            \call_user_func([self::CUSTOM_IMAGE_EDITOR, 'bootWithFilesystem'], $filesystem);
+        if (class_exists(self::IMAGE_EDITOR_IMAGICK)) {
+            \call_user_func([self::IMAGE_EDITOR_IMAGICK, 'bootWithFilesystem'], $filesystem);
+        }
+        if (class_exists(self::IMAGE_EDITOR_GD)) {
+            \call_user_func([self::IMAGE_EDITOR_GD, 'bootWithFilesystem'], $filesystem);
         }
     }
 
-    public function register(): void
+    public function filterUploadDir(array $uploadDir): array
     {
-        if ($this->registered) {
-            return;
-        }
+        $subdir = trim($uploadDir['subdir'] ?? '', '/');
 
-        add_filter('wp_image_editors', [$this, 'filterImageEditors'], 5);
-        add_filter('pre_move_uploaded_file', [$this, 'handlePreMoveUploadedFile'], 10, 3);
-        add_filter('wp_read_image_metadata', [$this, 'filterReadImageMetadata'], 10, 2);
-        add_filter('wp_generate_attachment_metadata', [$this, 'filterGenerateAttachmentMetadata'], 10, 2);
-        add_filter('pre_wp_unique_filename_file_list', [$this, 'filterUniqueFilenameFileList'], 10, 3);
-        add_action('delete_attachment', [$this, 'handleDeleteAttachment'], 10);
+        $remoteBase = $this->basePrefix !== '' ? $this->basePrefix . '/' : '';
+        $remoteBase .= $subdir !== '' ? $subdir : '';
 
-        $this->registered = true;
+        $remoteBase = trim($remoteBase, '/');
+
+        $uploadDir['path']   = $remoteBase !== '' ? 'fly://' . $remoteBase : 'fly://';
+        $uploadDir['basedir'] = $uploadDir['path'];
+        $uploadDir['subdir'] = $subdir !== '' ? '/' . $subdir : '';
+        $uploadDir['url']    = $uploadDir['baseurl'] = $uploadDir['url']; // baseurl se sobrescribe en Plugin::filterUploadDir
+
+        return $uploadDir;
     }
 
-    public function unregister(): void
+    public function filterAttachmentUrl(string $url, int $attachmentId): string
     {
-        if (! $this->registered) {
-            return;
+        $file = get_post_meta($attachmentId, '_wp_attached_file', true);
+
+        if (empty($file)) {
+            return $url;
         }
 
-        remove_filter('wp_image_editors', [$this, 'filterImageEditors'], 5);
-        remove_filter('pre_move_uploaded_file', [$this, 'handlePreMoveUploadedFile'], 10);
-        remove_filter('wp_read_image_metadata', [$this, 'filterReadImageMetadata'], 10);
-        remove_filter('wp_generate_attachment_metadata', [$this, 'filterGenerateAttachmentMetadata'], 10);
-        remove_filter('pre_wp_unique_filename_file_list', [$this, 'filterUniqueFilenameFileList'], 10);
-        remove_action('delete_attachment', [$this, 'handleDeleteAttachment']);
+        $relative = PathHelper::trimLeadingSlash($file);
 
-        $this->registered = false;
+        return trailingslashit($this->getBaseUrl()) . $relative;
     }
 
-    public function filterImageEditors(array $editors): array
+    public function filterGetAttachedFile(string $file, int $attachmentId): string
     {
-        if (! class_exists(self::CUSTOM_IMAGE_EDITOR)) {
-            return $editors;
+        $meta     = wp_get_attachment_metadata($attachmentId);
+        $relative = $meta['file'] ?? get_post_meta($attachmentId, '_wp_attached_file', true);
+
+        if (empty($relative)) {
+            return $file;
         }
 
-        $imagickIndex = array_search(\WP_Image_Editor_Imagick::class, $editors, true);
-
-        if ($imagickIndex !== false) {
-            unset($editors[$imagickIndex]);
-        }
-
-        array_unshift($editors, self::CUSTOM_IMAGE_EDITOR);
-
-        return array_values(array_unique($editors));
+        return 'fly://' . PathHelper::trimLeadingSlash($relative);
     }
 
-    public function handlePreMoveUploadedFile($override, array $file, string $destination)
+    public function filterUpdateAttachedFile(string $file, int $attachmentId): string
     {
-        if ($override !== null) {
-            return $override;
+        if (str_starts_with($file, 'fly://')) {
+            update_post_meta($attachmentId, '_wp_attached_file', PathHelper::stripProtocol($file));
+        } else {
+            update_post_meta($attachmentId, '_wp_attached_file', PathHelper::trimLeadingSlash($file));
         }
 
-        if (! $this->isFlyPath($destination)) {
-            return $override;
-        }
-
-        if (! $this->filesystem) {
-            return new WP_Error(
-                'flysystem_offload_missing_filesystem',
-                __('No se pudo acceder al filesystem remoto.', 'flysystem-offload')
-            );
-        }
-
-        $relativePath = $this->relativeFlyPath($destination);
-
-        if ($relativePath === null) {
-            return new WP_Error(
-                'flysystem_offload_invalid_destination',
-                __('Ruta de destino inválida para el stream fly://.', 'flysystem-offload')
-            );
-        }
-
-        $directory = trim(dirname($relativePath), '.');
-
-        try {
-            if ($directory !== '') {
-                $this->filesystem->createDirectory($directory);
-            }
-
-            $stream = @fopen($file['tmp_name'], 'rb');
-
-            if (! $stream) {
-                return new WP_Error(
-                    'flysystem_offload_tmp_read_fail',
-                    __('No se pudo leer el archivo temporal subido.', 'flysystem-offload')
-                );
-            }
-
-            $this->filesystem->writeStream($relativePath, $stream);
-        } catch (\Throwable $e) {
-            if (isset($stream) && is_resource($stream)) {
-                fclose($stream);
-            }
-
-            return new WP_Error(
-                'flysystem_offload_write_fail',
-                sprintf(
-                    __('No se pudo guardar el archivo en el almacenamiento remoto: %s', 'flysystem-offload'),
-                    $e->getMessage()
-                )
-            );
-        }
-
-        if (isset($stream) && is_resource($stream)) {
-            fclose($stream);
-        }
-
-        @unlink($file['tmp_name']);
-
-        return true;
+        return $file;
     }
 
-    public function filterReadImageMetadata($metadata, string $file)
+    public function ensureLocalPathForMetadata($metadata, string $file)
     {
-        if ($this->metadataMirrorInProgress || ! $this->isFlyPath($file)) {
+        if (! str_starts_with($file, 'fly://') || ! $this->filesystem) {
             return $metadata;
         }
 
-        $this->metadataMirrorInProgress = true;
-
-        $temp = $this->mirrorToLocal($file);
+        // Fuerza a WP a usar una copia temporal local durante la lectura de EXIF/IPTC
+        $remotePath = PathHelper::stripProtocol($file);
+        $temp       = $this->downloadToTemp($remotePath);
 
         if (! is_wp_error($temp)) {
             $metadata = wp_read_image_metadata($temp);
             @unlink($temp);
         }
 
-        $this->metadataMirrorInProgress = false;
-
         return $metadata;
     }
 
-    public function filterGenerateAttachmentMetadata(array $metadata, int $attachmentId): array
+    public function filterImageEditors(array $editors): array
     {
-        if (isset($metadata['filesize'])) {
-            return $metadata;
+        if (class_exists(self::IMAGE_EDITOR_IMAGICK)) {
+            $editors = array_filter(
+                $editors,
+                static fn (string $editor) => $editor !== \WP_Image_Editor_Imagick::class
+            );
+            array_unshift($editors, self::IMAGE_EDITOR_IMAGICK);
         }
 
-        $file = get_attached_file($attachmentId);
-
-        if ($file && file_exists($file)) {
-            $metadata['filesize'] = filesize($file);
+        if (class_exists(self::IMAGE_EDITOR_GD)) {
+            $editors = array_filter(
+                $editors,
+                static fn (string $editor) => $editor !== \WP_Image_Editor_GD::class
+            );
+            array_unshift($editors, self::IMAGE_EDITOR_GD);
         }
 
-        return $metadata;
-    }
-
-    public function filterUniqueFilenameFileList($files, string $dir, string $filename)
-    {
-        if (! $this->isFlyPath($dir) || ! $this->filesystem) {
-            return $files;
-        }
-
-        $relativeDir = $this->relativeFlyPath($dir);
-
-        if ($relativeDir === null) {
-            return $files;
-        }
-
-        $existing = [];
-
-        foreach ($this->filesystem->listContents($relativeDir, false) as $item) {
-            /** @var StorageAttributes $item */
-            if ($item->isDir()) {
-                continue;
-            }
-
-            $existing[] = basename($item->path());
-        }
-
-        return $existing;
+        return array_values(array_unique($editors));
     }
 
     public function handleDeleteAttachment(int $attachmentId): void
     {
-        $file = get_attached_file($attachmentId);
-
-        if (! $file || ! $this->isFlyPath($file)) {
+        if (! $this->filesystem) {
             return;
         }
 
-        $meta = wp_get_attachment_metadata($attachmentId);
+        $meta     = wp_get_attachment_metadata($attachmentId);
+        $relative = $meta['file'] ?? get_post_meta($attachmentId, '_wp_attached_file', true);
+
+        if (empty($relative)) {
+            return;
+        }
+
+        $base      = PathHelper::trimLeadingSlash($relative);
+        $directory = trim(dirname($base), './');
+
+        $targets = [$base];
 
         if (! empty($meta['sizes'])) {
-            foreach ($meta['sizes'] as $sizeInfo) {
-                if (empty($sizeInfo['file'])) {
-                    continue;
+            foreach ($meta['sizes'] as $size) {
+                if (! empty($size['file'])) {
+                    $targets[] = ltrim(($directory ? $directory . '/' : '') . $size['file'], '/');
                 }
-
-                wp_delete_file(str_replace(basename($file), $sizeInfo['file'], $file));
             }
         }
 
-        $original = get_post_meta($attachmentId, 'original_image', true);
-        if ($original) {
-            wp_delete_file(str_replace(basename($file), $original, $file));
-        }
-
-        $backup = get_post_meta($attachmentId, '_wp_attachment_backup_sizes', true);
-        if (is_array($backup)) {
-            foreach ($backup as $sizeInfo) {
-                if (empty($sizeInfo['file'])) {
-                    continue;
+        foreach ($targets as $target) {
+            try {
+                if ($this->filesystem->fileExists($target)) {
+                    $this->filesystem->delete($target);
                 }
-
-                wp_delete_file(str_replace(basename($file), $sizeInfo['file'], $file));
+            } catch (\Throwable $e) {
+                error_log('[Flysystem Offload] Error eliminando ' . $target . ': ' . $e->getMessage());
             }
         }
-
-        wp_delete_file($file);
     }
 
-    protected function mirrorToLocal(string $remotePath)
+    private function downloadToTemp(string $remotePath)
     {
-        if (! $this->filesystem || ! $this->isFlyPath($remotePath)) {
-            return $this->mirrorViaNativeCopy($remotePath);
+        if (! $this->filesystem) {
+            return new WP_Error(
+                'flysystem_offload_no_fs',
+                __('No hay filesystem remoto configurado.', 'flysystem-offload')
+            );
         }
 
         if (! function_exists('wp_tempnam')) {
             require_once ABSPATH . 'wp-admin/includes/file.php';
         }
 
-        $temp = wp_tempnam(wp_basename($remotePath));
+        $temp = wp_tempnam(basename($remotePath));
 
         if (! $temp) {
             return new WP_Error(
                 'flysystem_offload_temp_fail',
-                __('No se pudo crear un archivo temporal para la lectura de metadatos.', 'flysystem-offload')
-            );
-        }
-
-        $relative = $this->relativeFlyPath($remotePath);
-
-        if ($relative === null) {
-            @unlink($temp);
-
-            return new WP_Error(
-                'flysystem_offload_remote_copy_fail',
-                __('No se pudo determinar la ruta remota del archivo.', 'flysystem-offload')
+                __('No se pudo crear un archivo temporal.', 'flysystem-offload')
             );
         }
 
         try {
-            $source = $this->filesystem->readStream($relative);
-
-            if (! is_resource($source)) {
+            $stream = $this->filesystem->readStream($remotePath);
+            if (! is_resource($stream)) {
                 throw new \RuntimeException('No se pudo abrir el stream remoto.');
             }
 
             $target = fopen($temp, 'wb');
-
             if (! $target) {
-                throw new \RuntimeException('No se pudo abrir el archivo temporal en disco.');
+                throw new \RuntimeException('No se pudo abrir el archivo temporal.');
             }
 
-            stream_copy_to_stream($source, $target);
+            stream_copy_to_stream($stream, $target);
+
+            fclose($stream);
+            fclose($target);
         } catch (\Throwable $e) {
-            if (isset($source) && is_resource($source)) {
-                fclose($source);
+            if (isset($stream) && is_resource($stream)) {
+                fclose($stream);
             }
             if (isset($target) && is_resource($target)) {
                 fclose($target);
             }
-
             @unlink($temp);
 
             return new WP_Error(
-                'flysystem_offload_remote_copy_fail',
+                'flysystem_offload_download_fail',
                 sprintf(
-                    __('No se pudo copiar la imagen desde el almacenamiento remoto: %s', 'flysystem-offload'),
+                    __('Fallo al descargar "%s" del almacenamiento remoto: %s', 'flysystem-offload'),
+                    $remotePath,
                     $e->getMessage()
                 )
             );
         }
 
-        if (isset($source) && is_resource($source)) {
-            fclose($source);
-        }
-        if (isset($target) && is_resource($target)) {
-            fclose($target);
-        }
-
         return $temp;
     }
 
-    private function mirrorViaNativeCopy(string $remotePath)
+    private function getBaseUrl(): string
     {
-        if (! function_exists('wp_tempnam')) {
-            require_once ABSPATH . 'wp-admin/includes/file.php';
-        }
+        $uploadDir = wp_get_upload_dir();
 
-        $temp = wp_tempnam(wp_basename($remotePath));
-
-        if (! $temp) {
-            return new WP_Error(
-                'flysystem_offload_temp_fail',
-                __('No se pudo crear un archivo temporal para la lectura de metadatos.', 'flysystem-offload')
-            );
-        }
-
-        if (@copy($remotePath, $temp)) {
-            return $temp;
-        }
-
-        @unlink($temp);
-
-        return new WP_Error(
-            'flysystem_offload_remote_copy_fail',
-            __('No se pudo copiar la imagen desde el almacenamiento remoto.', 'flysystem-offload')
-        );
-    }
-
-    protected function isFlyPath(string $path): bool
-    {
-        return strncmp($path, 'fly://', 6) === 0;
-    }
-
-    protected function relativeFlyPath(string $path): ?string
-    {
-        if (! $this->isFlyPath($path)) {
-            return null;
-        }
-
-        return ltrim(substr($path, 6), '/');
+        return $uploadDir['baseurl'] ?? content_url('/uploads');
     }
 }
diff --git a/src/StreamWrapper/FlysystemStreamWrapper.php b/src/StreamWrapper/FlysystemStreamWrapper.php
index 2d25037..7cc9d16 100644
--- a/src/StreamWrapper/FlysystemStreamWrapper.php
+++ b/src/StreamWrapper/FlysystemStreamWrapper.php
@@ -12,18 +12,15 @@ use League\Flysystem\UnableToWriteFile;
 
 class FlysystemStreamWrapper
 {
-    /**
-     * @var array<string, FilesystemOperator>
-     */
+    /** @var array<string, FilesystemOperator> */
     private static array $filesystems = [];
 
-    /**
-     * @var array<string, string>
-     */
+    /** @var array<string, string> */
     private static array $prefixes = [];
 
     /** @var resource|null */
     private $stream = null;
+
     private string $protocol = '';
     private string $path = '';
     private string $mode = '';
@@ -31,10 +28,10 @@ class FlysystemStreamWrapper
     private array $dirEntries = [];
     private int $dirPosition = 0;
 
-    /** @var resource|null */
+    /** @var resource|array|string|null */
     public $context = null;
 
-    public static function register(FilesystemOperator $filesystem, string $protocol, string $prefix): void
+    public static function register(FilesystemOperator $filesystem, string $protocol, string $prefix = ''): void
     {
         if (in_array($protocol, stream_get_wrappers(), true)) {
             stream_wrapper_unregister($protocol);
@@ -48,23 +45,25 @@ class FlysystemStreamWrapper
 
     public function stream_open(string $path, string $mode, int $options, ?string &$opened_path): bool
     {
-        $protocol      = $this->extractProtocol($path);
+        $protocol       = $this->extractProtocol($path);
         $this->protocol = $protocol;
         $this->path     = $path;
         $this->mode     = $mode;
-        $this->flyPath  = $this->resolveFlyPath($path, $protocol);
+        $this->flyPath  = $this->resolveFlyPath($path);
 
         $filesystem = $this->filesystem($protocol);
 
+        $binary = str_contains($mode, 'b') ? 'b' : '';
+
         if (strpbrk($mode, 'waxc')) {
-            $this->stream = fopen('php://temp', str_contains($mode, 'b') ? 'w+b' : 'w+');
+            $this->stream = fopen('php://temp', 'w+' . $binary);
 
             if (str_contains($mode, 'a') && $filesystem->fileExists($this->flyPath)) {
                 try {
-                    $contents = $filesystem->readStream($this->flyPath);
-                    if (is_resource($contents)) {
-                        stream_copy_to_stream($contents, $this->stream);
-                        fclose($contents);
+                    $remote = $filesystem->readStream($this->flyPath);
+                    if (is_resource($remote)) {
+                        stream_copy_to_stream($remote, $this->stream);
+                        fclose($remote);
                     }
                 } catch (UnableToReadFile $e) {
                     return false;
@@ -77,12 +76,18 @@ class FlysystemStreamWrapper
         }
 
         try {
-            $resource = $filesystem->readStream($this->flyPath);
-            if (! is_resource($resource)) {
+            $remote = $filesystem->readStream($this->flyPath);
+            if (! is_resource($remote)) {
                 return false;
             }
 
-            $this->stream = $resource;
+            $local = fopen('php://temp', 'w+' . $binary);
+            stream_copy_to_stream($remote, $local);
+
+            fclose($remote);
+            rewind($local);
+
+            $this->stream = $local;
 
             return true;
         } catch (UnableToReadFile $e) {
@@ -109,9 +114,16 @@ class FlysystemStreamWrapper
         $filesystem = $this->filesystem($this->protocol);
 
         try {
-            rewind($this->stream);
+            $meta = stream_get_meta_data($this->stream);
+            if ($meta['seekable'] ?? false) {
+                rewind($this->stream);
+            }
+
             $filesystem->writeStream($this->flyPath, $this->stream);
-            rewind($this->stream);
+
+            if ($meta['seekable'] ?? false) {
+                rewind($this->stream);
+            }
 
             return true;
         } catch (UnableToWriteFile $e) {
@@ -132,6 +144,58 @@ class FlysystemStreamWrapper
         $this->stream = null;
     }
 
+    public function stream_tell(): int|false
+    {
+        return is_resource($this->stream) ? ftell($this->stream) : false;
+    }
+
+    public function stream_seek(int $offset, int $whence = SEEK_SET): bool
+    {
+        if (! is_resource($this->stream)) {
+            return false;
+        }
+
+        return fseek($this->stream, $offset, $whence) === 0;
+    }
+
+    public function stream_eof(): bool
+    {
+        return is_resource($this->stream) ? feof($this->stream) : true;
+    }
+
+    public function stream_metadata(string $path, int $option, mixed $value): bool
+    {
+        // WordPress suele invocar chmod/chown/chgrp incluso sobre streams remotos.
+        // Los tratamos como no-ops y devolvemos true para evitar warnings.
+        return true;
+    }
+
+    public function stream_cast(int $cast_as)
+    {
+        // Permite que funciones como getimagesize() o getID3 obtengan el recurso subyacente.
+        if (! is_resource($this->stream)) {
+            return false;
+        }
+
+        // Aseguramos que el puntero esté al inicio cuando se castea como stream.
+        if (in_array($cast_as, [STREAM_CAST_FOR_SELECT, STREAM_CAST_AS_STREAM], true)) {
+            $meta = stream_get_meta_data($this->stream);
+            if ($meta['seekable'] ?? false) {
+                rewind($this->stream);
+            }
+
+            return $this->stream;
+        }
+
+        return false;
+    }
+
+    public function stream_set_option(int $option, int $arg1, int $arg2): bool
+    {
+        // No se requieren operaciones especiales; devolvemos false para indicar que no se manejó.
+        return false;
+    }
+
     public function stream_stat(): array|false
     {
         return $this->url_stat($this->path, 0);
@@ -139,12 +203,14 @@ class FlysystemStreamWrapper
 
     public function url_stat(string $path, int $flags): array|false
     {
-        $protocol  = $this->extractProtocol($path);
+        $protocol   = $this->extractProtocol($path);
         $filesystem = $this->filesystem($protocol);
-        $flyPath    = $this->resolveFlyPath($path, $protocol);
+        $flyPath    = $this->resolveFlyPath($path);
 
         try {
-            if (! $filesystem->fileExists($flyPath) && ! $filesystem->directoryExists($flyPath)) {
+            $exists = $filesystem->fileExists($flyPath) || $filesystem->directoryExists($flyPath);
+
+            if (! $exists) {
                 if ($flags & STREAM_URL_STAT_QUIET) {
                     return false;
                 }
@@ -197,9 +263,9 @@ class FlysystemStreamWrapper
 
     public function unlink(string $path): bool
     {
-        $protocol  = $this->extractProtocol($path);
+        $protocol   = $this->extractProtocol($path);
         $filesystem = $this->filesystem($protocol);
-        $flyPath    = $this->resolveFlyPath($path, $protocol);
+        $flyPath    = $this->resolveFlyPath($path);
 
         try {
             $filesystem->delete($flyPath);
@@ -212,9 +278,9 @@ class FlysystemStreamWrapper
 
     public function mkdir(string $path, int $mode, int $options): bool
     {
-        $protocol  = $this->extractProtocol($path);
+        $protocol   = $this->extractProtocol($path);
         $filesystem = $this->filesystem($protocol);
-        $flyPath    = $this->resolveFlyPath($path, $protocol);
+        $flyPath    = $this->resolveFlyPath($path);
 
         try {
             $filesystem->createDirectory($flyPath);
@@ -227,9 +293,9 @@ class FlysystemStreamWrapper
 
     public function rmdir(string $path, int $options): bool
     {
-        $protocol  = $this->extractProtocol($path);
+        $protocol   = $this->extractProtocol($path);
         $filesystem = $this->filesystem($protocol);
-        $flyPath    = $this->resolveFlyPath($path, $protocol);
+        $flyPath    = $this->resolveFlyPath($path);
 
         try {
             $filesystem->deleteDirectory($flyPath);
@@ -240,13 +306,35 @@ class FlysystemStreamWrapper
         }
     }
 
+    public function rename(string $oldPath, string $newPath): bool
+    {
+        $oldProtocol = $this->extractProtocol($oldPath);
+        $newProtocol = $this->extractProtocol($newPath);
+
+        if ($oldProtocol !== $newProtocol) {
+            return false;
+        }
+
+        $filesystem = $this->filesystem($oldProtocol);
+        $from       = $this->resolveFlyPath($oldPath);
+        $to         = $this->resolveFlyPath($newPath);
+
+        try {
+            $filesystem->move($from, $to);
+
+            return true;
+        } catch (FilesystemException $e) {
+            return false;
+        }
+    }
+
     public function dir_opendir(string $path, int $options): bool
     {
         $protocol        = $this->extractProtocol($path);
         $this->protocol  = $protocol;
-        $this->flyPath   = $this->resolveFlyPath($path, $protocol);
+        $this->flyPath   = $this->resolveFlyPath($path);
         $filesystem      = $this->filesystem($protocol);
-        $this->dirEntries = [];
+        $this->dirEntries = ['.', '..'];
 
         foreach ($filesystem->listContents($this->flyPath, false) as $item) {
             if ($item instanceof StorageAttributes) {
@@ -285,28 +373,6 @@ class FlysystemStreamWrapper
         return true;
     }
 
-    public function rename(string $oldPath, string $newPath): bool
-    {
-        $oldProtocol  = $this->extractProtocol($oldPath);
-        $newProtocol  = $this->extractProtocol($newPath);
-
-        if ($oldProtocol !== $newProtocol) {
-            return false;
-        }
-
-        $filesystem = $this->filesystem($oldProtocol);
-        $from       = $this->resolveFlyPath($oldPath, $oldProtocol);
-        $to         = $this->resolveFlyPath($newPath, $newProtocol);
-
-        try {
-            $filesystem->move($from, $to);
-
-            return true;
-        } catch (FilesystemException $e) {
-            return false;
-        }
-    }
-
     private function filesystem(string $protocol): FilesystemOperator
     {
         if (! isset(self::$filesystems[$protocol])) {
@@ -316,24 +382,12 @@ class FlysystemStreamWrapper
         return self::$filesystems[$protocol];
     }
 
-	private function resolveFlyPath(string $path, ?string $protocol = null): string  
-	{  
-		$protocol ??= $this->extractProtocol($path);  
-		$prefix    = self::$prefixes[$protocol] ?? '';  
-		$raw       = preg_replace('#^[^:]+://#', '', $path) ?? '';  
-	  
-		$normalized = ltrim($raw, '/');  
-	  
-		if ($prefix !== '' && str_starts_with($normalized, $prefix . '/')) {  
-			return $normalized;  
-		}  
-	  
-		if ($prefix === '') {  
-			return $normalized;  
-		}  
-	  
-		return $prefix . '/' . $normalized;  
-	}
+    private function resolveFlyPath(string $path): string
+    {
+        $raw = preg_replace('#^[^:]+://#', '', $path) ?? '';
+
+        return ltrim($raw, '/');
+    }
 
     private function extractProtocol(string $path): string
     {