diff --git a/src/nk/DocumentBundle/Command/GenerateFileSlugCommand.php b/src/nk/DocumentBundle/Command/GenerateFileSlugCommand.php
new file mode 100644
index 0000000..19e41ee
--- /dev/null
+++ b/src/nk/DocumentBundle/Command/GenerateFileSlugCommand.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace nk\DocumentBundle\Command;
+
+use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Helper\ProgressBar;
+
+class GenerateFileSlugCommand extends ContainerAwareCommand
+{
+    protected function configure()
+    {
+        $this
+            ->setName('nk:document:generate:file:slug')
+            ->setDescription('(re)genère les slugs de tous les fichiers')
+        ;
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $em = $this->getContainer()->get('doctrine.orm.entity_manager');
+        $files = $em->getRepository('nkDocumentBundle:File')->findAll();
+
+        $progress = new ProgressBar($output, count($files));
+        $progress->setFormat('%current%/%max% [%bar%] %percent:3s%% %elapsed:6s%/%estimated:-6s% %memory:6s% %message%');
+        $progress->start();
+
+        $progress->setMessage('start');
+
+        foreach ($files as $file) {
+            $progress->setMessage($file->getId());
+            $file->setSlug(null);
+
+            if ($progress->getProgress() % 10 === 0) {
+                $em->flush();
+            }
+
+            $progress->advance();
+        }
+
+        $em->flush();
+
+        $progress->setMessage('finish');
+        $progress->finish();
+    }
+}
diff --git a/src/nk/DocumentBundle/Controller/ApiRestController.php b/src/nk/DocumentBundle/Controller/ApiRestController.php
index 5a3bf8c..ba17b0c 100644
--- a/src/nk/DocumentBundle/Controller/ApiRestController.php
+++ b/src/nk/DocumentBundle/Controller/ApiRestController.php
@@ -133,7 +133,7 @@ public function getDocumentAction(Document $document)
 
         foreach ($document->getFiles() as $file) {
             /* @var $file \nk\DocumentBundle\Entity\File */
-            $file->setDownloadPath($this->generateUrl('nk_document_file_download', array('id' => $file->getId(), 'inline' => 1)));
+            $file->setDownloadPath($this->generateUrl('nk_document_file_preview_slug', array('slug' => $file->getSlug())));
         }
 
         $data = array(
diff --git a/src/nk/DocumentBundle/Entity/File.php b/src/nk/DocumentBundle/Entity/File.php
index 6684ec6..6799918 100644
--- a/src/nk/DocumentBundle/Entity/File.php
+++ b/src/nk/DocumentBundle/Entity/File.php
@@ -88,6 +88,13 @@ class File
      */
     private $downloadPath;
 
+    /**
+     * @Gedmo\Slug(fields={"id", "name"}, suffix=".pdf")
+     * @ORM\Column(length=128, nullable=false, options={"default" : ""})
+     * @Serializer\Groups({"details"})
+     */
+    private $slug;
+
     public function __construct(Document $document = null)
     {
         if($document !== null)
@@ -275,4 +282,27 @@ public function setDownloadPath($downloadPath)
 
         return $this;
     }
+
+    /**
+     * Set slug
+     *
+     * @param string $slug
+     * @return File
+     */
+    public function setSlug($slug)
+    {
+        $this->slug = $slug;
+
+        return $this;
+    }
+
+    /**
+     * Get slug
+     *
+     * @return string 
+     */
+    public function getSlug()
+    {
+        return $this->slug;
+    }
 }
diff --git a/src/nk/DocumentBundle/Resources/config/routing/file.yml b/src/nk/DocumentBundle/Resources/config/routing/file.yml
index 17bb45f..45dcab0 100644
--- a/src/nk/DocumentBundle/Resources/config/routing/file.yml
+++ b/src/nk/DocumentBundle/Resources/config/routing/file.yml
@@ -8,4 +8,10 @@ nk_document_file_download:
     pattern:  /{id}/download
     defaults: { _controller: nkDocumentBundle:File:download }
     requirements:
-        id: \d+
\ No newline at end of file
+        id: \d+
+
+nk_document_file_preview_slug:
+    pattern:  /{slug}
+    defaults: { _controller: nkDocumentBundle:File:download, inline = 1 }
+    requirements:
+        id: \d+