diff --git a/src/Model/FileSupport/BuyRequest/CustomizableOptionDataProvider.php b/src/Model/FileSupport/BuyRequest/CustomizableOptionDataProvider.php
new file mode 100644
index 0000000..404289f
--- /dev/null
+++ b/src/Model/FileSupport/BuyRequest/CustomizableOptionDataProvider.php
@@ -0,0 +1,188 @@
+<?php
+/**
+ * ScandiPWA - Progressive Web App for Magento
+ *
+ * Copyright © Scandiweb, Inc. All rights reserved.
+ * See LICENSE for license details.
+ *
+ * @license OSL-3.0 (Open Software License ("OSL") v. 3.0)
+ * @package scandipwa/quote-graphql
+ * @link    https://github.com/scandipwa/quote-graphql
+ */
+
+declare(strict_types=1);
+
+namespace ScandiPWA\WishlistGraphQl\Model\FileSupport\BuyRequest;
+
+use Magento\Framework\App\Filesystem\DirectoryList;
+use Magento\Framework\Filesystem;
+use Magento\Wishlist\Model\Wishlist\BuyRequest\BuyRequestDataProviderInterface;
+use Magento\Wishlist\Model\Wishlist\Data\WishlistItem;
+
+/**
+ * Data provider for custom options buy requests
+ */
+class CustomizableOptionDataProvider implements BuyRequestDataProviderInterface
+{
+    const PROVIDER_OPTION_TYPE = 'custom-option';
+    const QUOTE_MEDIA_PATH = 'custom_options/quote/';
+    const ORDER_MEDIA_PATH = 'custom_options/order/';
+
+    /**
+     * @var string
+     */
+    protected $mediaPath;
+
+    /**
+     * @param Filesystem $filesystem
+     */
+    public function __construct(
+        Filesystem $filesystem
+    ) {
+        $this->mediaPath = $filesystem->getDirectoryRead(DirectoryList::MEDIA)->getAbsolutePath();
+    }
+
+    /**
+     * @inheritdoc
+     *
+     * @phpcs:disable Magento2.Functions.DiscouragedFunction
+     */
+    public function execute(WishlistItem $wishlistItemData, ?int $productId): array
+    {
+        $customizableOptionsData = [];
+        foreach ($wishlistItemData->getSelectedOptions() as $optionData) {
+            $optionData = \explode('/', base64_decode($optionData->getId()));
+
+            if ($this->isProviderApplicable($optionData) === false) {
+                continue;
+            }
+
+            [$optionType, $optionId, $optionValue] = $optionData;
+
+            if ($optionType == self::PROVIDER_OPTION_TYPE) {
+                $customizableOptionsData[$optionId][] = $optionValue;
+            }
+        }
+
+        foreach ($wishlistItemData->getEnteredOptions() as $option) {
+            $optionData = \explode('/', base64_decode($option->getUid()));
+
+            if ($this->isProviderApplicable($optionData) === false) {
+                continue;
+            }
+
+            [$optionType, $optionId] = $optionData;
+
+            // -- File Upload Support --
+            $fileData = $this->getFileData($option->getUid(), $option->getValue());
+            if ($optionType == self::PROVIDER_OPTION_TYPE) {
+                if ($fileData !== false) {
+                    $this->createFileAndFolder($option->getUid(), $fileData['raw'], $fileData['title']);
+                    unset($fileData['raw']);
+                    $customizableOptionsData[$optionId][] = $fileData;
+            // -- End of Support --
+                } else {
+                    $customizableOptionsData[$optionId][] = $option->getValue();
+                }
+            }
+        }
+
+        if (empty($customizableOptionsData)) {
+            return $customizableOptionsData;
+        }
+
+        $result = ['options' => $this->flattenOptionValues($customizableOptionsData)];
+
+        if ($productId) {
+            $result += ['product' => $productId];
+        }
+
+        return $result;
+    }
+
+    protected function getFileData($uid, $optionData) {
+        try {
+            $data = json_decode($optionData, true);
+
+            if (!is_array($data)) {
+                return false;
+            }
+
+            $filename = $data['file_name'];
+            $filedata = $data['file_data'];
+
+            $insidePath = $uid . '/_/' . $filename;
+
+            if (!$filename || !$filedata) {
+                return false;
+            }
+
+            return [
+                'type' => 'application/octet-stream',
+                'title' => $filename,
+                'quote_path' => self::QUOTE_MEDIA_PATH . $insidePath,
+                'order_path' => self::ORDER_MEDIA_PATH . $insidePath,
+                'fullpath' => $this->mediaPath . self::QUOTE_MEDIA_PATH . $insidePath,
+                'secret_key' => $filename,
+                'raw' => $filedata
+            ];
+        } catch(\Exception $e) {
+            return false;
+        }
+
+        return false;
+    }
+
+    /**
+     * @param $quoteId
+     * @param $value
+     * @param $filename
+     */
+    public function createFileAndFolder($uid, $value, $filename)
+    {
+        $directory = sprintf(
+            '%s%s%s/_',
+            $this->mediaPath,
+            self::QUOTE_MEDIA_PATH,
+            $uid
+        );
+
+        if (!is_dir($directory)) {
+            mkdir($directory, 0777, true);
+        }
+
+        file_put_contents(
+            sprintf('%s/%s', $directory, $filename),
+            base64_decode(substr($value, strpos($value, ',') + 1 ))
+        );
+    }
+
+    /**
+     * Flatten option values for non-multiselect customizable options
+     *
+     * @param array $customizableOptionsData
+     *
+     * @return array
+     */
+    protected function flattenOptionValues(array $customizableOptionsData): array
+    {
+        foreach ($customizableOptionsData as $optionId => $optionValue) {
+            if (count($optionValue) === 1) {
+                $customizableOptionsData[$optionId] = $optionValue[0];
+            }
+        }
+
+        return $customizableOptionsData;
+    }
+
+    /**
+     * Checks whether this provider is applicable for the current option
+     *
+     * @param array $optionData
+     * @return bool
+     */
+    protected function isProviderApplicable(array $optionData): bool
+    {
+        return $optionData[0] === self::PROVIDER_OPTION_TYPE;
+    }
+}
diff --git a/src/Model/Resolver/WishlistItemsResolver.php b/src/Model/Resolver/WishlistItemsResolver.php
index de1b6c8..26e77b4 100755
--- a/src/Model/Resolver/WishlistItemsResolver.php
+++ b/src/Model/Resolver/WishlistItemsResolver.php
@@ -250,7 +250,16 @@ protected function getItemOptions($item, $type)
                 $options = $this->downloadableOptions->getOptions($item);
                 break;
             default:
-                return $this->productOptions->getOptions($item);
+                $options = $this->productOptions->getOptions($item);
+
+                // Magento produce HTML markup as label for files. We need plain name of the file instead.
+                foreach ($options as $index => $option){
+                    if($option['option_type'] === 'file'){
+                        $options[$index]['value'] = $option['print_value'];
+                    }
+                }
+
+                return $options;
         }
 
         $output = [];
diff --git a/src/etc/graphql/di.xml b/src/etc/graphql/di.xml
new file mode 100644
index 0000000..063d310
--- /dev/null
+++ b/src/etc/graphql/di.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <type name="Magento\Wishlist\Model\Wishlist\BuyRequest\BuyRequestBuilder">
+        <arguments>
+            <argument name="providers" xsi:type="array">
+                <item name="customizable_option" xsi:type="object">ScandiPWA\WishlistGraphQl\Model\FileSupport\BuyRequest\CustomizableOptionDataProvider</item>
+            </argument>
+        </arguments>
+    </type>
+</config>