diff --git a/lib/Alchemy/Phrasea/Filesystem/FilesystemService.php b/lib/Alchemy/Phrasea/Filesystem/FilesystemService.php
index ad0ad11ceb..1a782400ad 100644
--- a/lib/Alchemy/Phrasea/Filesystem/FilesystemService.php
+++ b/lib/Alchemy/Phrasea/Filesystem/FilesystemService.php
@@ -10,6 +10,7 @@
 
 namespace Alchemy\Phrasea\Filesystem;
 
+use Alchemy\Phrasea\Media\Subdef\Specification\PdfSpecification;
 use Alchemy\Phrasea\Model\RecordInterface;
 use MediaAlchemyst\Specification\SpecificationInterface;
 
@@ -163,6 +164,8 @@ class FilesystemService
                 return $this->getExtensionFromVideoCodec($spec->getVideoCodec());
             case SpecificationInterface::TYPE_SWF:
                 return 'swf';
+            case PdfSpecification::TYPE_PDF:
+                return 'pdf';
         }
 
         return null;
@@ -205,8 +208,6 @@ class FilesystemService
                 return 'jpg';
             case 'png':
                 return 'png';
-            case 'pdf':
-                return 'pdf';
         }
 
         return null;
diff --git a/lib/Alchemy/Phrasea/Media/Subdef/Image.php b/lib/Alchemy/Phrasea/Media/Subdef/Image.php
index 921cd6c9d7..441f156b21 100644
--- a/lib/Alchemy/Phrasea/Media/Subdef/Image.php
+++ b/lib/Alchemy/Phrasea/Media/Subdef/Image.php
@@ -34,7 +34,7 @@ class Image extends Provider
         $this->registerOption(new OptionType\Boolean($this->translator->trans('Remove ICC Profile'), self::OPTION_STRIP, false));
         $this->registerOption(new OptionType\Boolean($this->translator->trans('Flatten layers'), self::OPTION_FLATTEN, false));
         $this->registerOption(new OptionType\Range($this->translator->trans('Quality'), self::OPTION_QUALITY, 0, 100, 75));
-        $this->registerOption(new OptionType\Enum('Image Codec', self::OPTION_ICODEC, array('jpeg', 'png', 'tiff', 'pdf'), 'jpeg'));
+        $this->registerOption(new OptionType\Enum('Image Codec', self::OPTION_ICODEC, array('jpeg', 'png', 'tiff'), 'jpeg'));
     }
 
     public function getType()
diff --git a/lib/Alchemy/Phrasea/Media/Subdef/Pdf.php b/lib/Alchemy/Phrasea/Media/Subdef/Pdf.php
new file mode 100644
index 0000000000..4d0f087b8c
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Media/Subdef/Pdf.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Alchemy\Phrasea\Media\Subdef;
+
+use Symfony\Component\Translation\TranslatorInterface;
+use Alchemy\Phrasea\Media\Subdef\Specification\PdfSpecification;
+
+class Pdf extends Provider
+{
+    protected $options = [];
+
+    public function __construct(TranslatorInterface $translator)
+    {
+        $this->translator = $translator;
+    }
+
+    public function getType()
+    {
+        return self::TYPE_PDF;
+    }
+
+    public function getDescription()
+    {
+        return $this->translator->trans('Generates a pdf file');
+    }
+
+    public function getMediaAlchemystSpec()
+    {
+        if (! $this->spec) {
+            $this->spec = new PdfSpecification();
+        }
+
+        return $this->spec;
+    }
+
+}
\ No newline at end of file
diff --git a/lib/Alchemy/Phrasea/Media/Subdef/Specification/PdfSpecification.php b/lib/Alchemy/Phrasea/Media/Subdef/Specification/PdfSpecification.php
new file mode 100644
index 0000000000..83cb5b2f3a
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Media/Subdef/Specification/PdfSpecification.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Alchemy\Phrasea\Media\Subdef\Specification;
+
+use MediaAlchemyst\Specification\AbstractSpecification;
+
+class PdfSpecification extends AbstractSpecification
+{
+    const TYPE_PDF = 'pdf';
+
+    public function getType()
+    {
+        return self::TYPE_PDF;
+    }
+}
\ No newline at end of file
diff --git a/lib/Alchemy/Phrasea/Media/Subdef/Subdef.php b/lib/Alchemy/Phrasea/Media/Subdef/Subdef.php
index 3853958f4c..5bfb687221 100644
--- a/lib/Alchemy/Phrasea/Media/Subdef/Subdef.php
+++ b/lib/Alchemy/Phrasea/Media/Subdef/Subdef.php
@@ -22,6 +22,7 @@ interface Subdef
     const TYPE_VIDEO = 'video';
     const TYPE_AUDIO = 'audio';
     const TYPE_FLEXPAPER = 'flexpaper';
+    const TYPE_PDF = 'pdf';
     const TYPE_UNKNOWN = 'unknown';
 
     /**
diff --git a/lib/Alchemy/Phrasea/Media/SubdefGenerator.php b/lib/Alchemy/Phrasea/Media/SubdefGenerator.php
index 3a1e9daa4f..04ce4e3f64 100644
--- a/lib/Alchemy/Phrasea/Media/SubdefGenerator.php
+++ b/lib/Alchemy/Phrasea/Media/SubdefGenerator.php
@@ -19,11 +19,16 @@ use Alchemy\Phrasea\Core\Event\Record\SubDefinitionsCreationEvent;
 use Alchemy\Phrasea\Core\Event\Record\SubDefinitionCreationFailedEvent;
 use Alchemy\Phrasea\Core\Event\Record\RecordEvents;
 use Alchemy\Phrasea\Filesystem\FilesystemService;
+use Alchemy\Phrasea\Media\Subdef\Specification\PdfSpecification;
 use MediaAlchemyst\Alchemyst;
+use MediaAlchemyst\Specification\Image;
 use MediaVorus\MediaVorus;
 use MediaAlchemyst\Exception\ExceptionInterface as MediaAlchemystException;
 use Neutron\TemporaryFilesystem\Manager;
 use Psr\Log\LoggerInterface;
+use Unoconv\Exception\ExceptionInterface as UnoconvException;
+use Unoconv\Exception\RuntimeException;
+use Unoconv\Unoconv;
 
 class SubdefGenerator
 {
@@ -70,12 +75,8 @@ class SubdefGenerator
 
             }
         }
-        $recordType = $record->getType();
-        if(isset($this->tmpFilePath) && $recordType != 'image'){
-            $recordType = 'image';
-        }
 
-        if (null === $subdefs = $record->getDatabox()->get_subdef_structure()->getSubdefGroup($recordType)) {
+        if (null === $subdefs = $record->getDatabox()->get_subdef_structure()->getSubdefGroup($record->getType())) {
             $this->logger->info(sprintf('Nothing to do for %s', $record->getType()));
             $subdefs = [];
         }
@@ -169,14 +170,48 @@ class SubdefGenerator
 
                 return;
             }
-            if(isset($this->tmpFilePath)){
-                $this->alchemyst->turnInto($this->tmpFilePath , $pathdest, $subdef_class->getSpecs());
-            }else{
+
+            if (isset($this->tmpFilePath) && $subdef_class->getSpecs() instanceof Image) {
+
+                $this->alchemyst->turnInto($this->tmpFilePath, $pathdest, $subdef_class->getSpecs());
+
+            } elseif ($subdef_class->getSpecs() instanceof PdfSpecification){
+
+                $this->generatePdfSubdef($record->get_hd_file()->getPathname(), $pathdest);
+
+            } else {
+
                 $this->alchemyst->turnInto($record->get_hd_file()->getPathname(), $pathdest, $subdef_class->getSpecs());
+
             }
 
         } catch (MediaAlchemystException $e) {
             $this->logger->error(sprintf('Subdef generation failed for record %d with message %s', $record->getRecordId(), $e->getMessage()));
         }
     }
+
+    private function generatePdfSubdef($source, $pathdest)
+    {
+        try {
+            $mediafile = $this->app['mediavorus']->guess($source);
+        } catch (MediaVorusFileNotFoundException $e) {
+            throw new FileNotFoundException(sprintf('File %s not found', $source));
+        }
+
+        try {
+            if ($mediafile->getFile()->getMimeType() != 'application/pdf') {
+                $this->app['unoconv']->transcode(
+                    $mediafile->getFile()->getPathname(), Unoconv::FORMAT_PDF, $pathdest
+                );
+
+            } else {
+                copy($mediafile->getFile()->getPathname(), $pathdest);
+            }
+        } catch (UnoconvException $e) {
+            throw new RuntimeException('Unable to transmute document to pdf due to Unoconv', null, $e);
+        } catch (\Exception $e) {
+            throw $e;
+        }
+
+    }
 }
diff --git a/lib/classes/databox/subdef.php b/lib/classes/databox/subdef.php
index 8fe0be07f7..0dcab4ccc1 100644
--- a/lib/classes/databox/subdef.php
+++ b/lib/classes/databox/subdef.php
@@ -13,6 +13,7 @@ use Alchemy\Phrasea\Media\Subdef\Video;
 use Alchemy\Phrasea\Media\Subdef\FlexPaper;
 use Alchemy\Phrasea\Media\Subdef\Gif;
 use Alchemy\Phrasea\Media\Subdef\Unknown;
+use Alchemy\Phrasea\Media\Subdef\Pdf;
 use Alchemy\Phrasea\Media\Subdef\Subdef as SubdefSpecs;
 use Alchemy\Phrasea\Media\Type\Type as SubdefType;
 use MediaAlchemyst\Specification\SpecificationInterface;
@@ -40,9 +41,9 @@ class databox_subdef
     protected $translator;
     protected static $mediaTypeToSubdefTypes = [
         SubdefType::TYPE_AUDIO    => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_AUDIO],
-        SubdefType::TYPE_DOCUMENT => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_FLEXPAPER],
+        SubdefType::TYPE_DOCUMENT => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_FLEXPAPER, SubdefSpecs::TYPE_PDF],
         SubdefType::TYPE_FLASH    => [SubdefSpecs::TYPE_IMAGE],
-        SubdefType::TYPE_IMAGE    => [SubdefSpecs::TYPE_IMAGE],
+        SubdefType::TYPE_IMAGE    => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_PDF],
         SubdefType::TYPE_VIDEO    => [SubdefSpecs::TYPE_IMAGE, SubdefSpecs::TYPE_VIDEO, SubdefSpecs::TYPE_ANIMATION],
         SubdefType::TYPE_UNKNOWN  => [SubdefSpecs::TYPE_IMAGE],
     ];
@@ -100,6 +101,9 @@ class databox_subdef
             case SubdefSpecs::TYPE_FLEXPAPER:
                 $this->subdef_type = $this->buildFlexPaperSubdef($sd);
                 break;
+            case SubdefSpecs::TYPE_PDF:
+                $this->subdef_type = $this->buildPdfSubdef($sd);
+                break;
             case SubdefSpecs::TYPE_UNKNOWN:
                 $this->subdef_type = $this->buildImageSubdef($sd);
                 break;
@@ -216,6 +220,16 @@ class databox_subdef
     {
         return new FlexPaper($this->translator);
     }
+    /**
+     * Build Pdf Subdef object depending the SimpleXMLElement
+     *
+     * @param  SimpleXMLElement $sd
+     * @return Pdf
+     */
+    protected function buildPdfSubdef(SimpleXMLElement $sd)
+    {
+        return new Pdf($this->translator);
+    }
     /**
      *
      * @return string
@@ -360,6 +374,9 @@ class databox_subdef
                         case SubdefSpecs::TYPE_VIDEO:
                             $mediatype_obj = new Video($this->translator);
                             break;
+                        case SubdefSpecs::TYPE_PDF:
+                            $mediatype_obj = new Pdf($this->translator);
+                            break;
                         case SubdefSpecs::TYPE_UNKNOWN:
                             $mediatype_obj = new Unknown($this->translator);
                             break;
diff --git a/tests/Alchemy/Tests/Phrasea/Media/Subdef/PdfTest.php b/tests/Alchemy/Tests/Phrasea/Media/Subdef/PdfTest.php
new file mode 100644
index 0000000000..9edbf50c41
--- /dev/null
+++ b/tests/Alchemy/Tests/Phrasea/Media/Subdef/PdfTest.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Alchemy\Tests\Phrasea\Media\Subdef;
+
+use Alchemy\Phrasea\Media\Subdef\Pdf;
+use Alchemy\Phrasea\Media\Subdef\Subdef;
+use Alchemy\Tests\Tools\TranslatorMockTrait;
+
+/**
+ * @group functional
+ * @group legacy
+ */
+class PdfTest extends \PhraseanetTestCase
+{
+    use TranslatorMockTrait;
+
+    /**
+     * @var Pdf
+     */
+    protected $object;
+
+    public function setUp()
+    {
+        parent::setUp();
+        $this->object = new Pdf($this->createTranslatorMock());
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\Pdf::getType
+     */
+    public function testGetType()
+    {
+        $this->assertEquals(Subdef::TYPE_PDF, $this->object->getType());
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\Pdf::getDescription
+     */
+    public function testGetDescription()
+    {
+        $this->assertTrue(is_string($this->object->getDescription()));
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\Pdf::getMediaAlchemystSpec
+     */
+    public function testGetMediaAlchemystSpec()
+    {
+        $this->assertInstanceOf('Alchemy\\Phrasea\\Media\\Subdef\\Specification\\PdfSpecification', $this->object->getMediaAlchemystSpec());
+    }
+}
diff --git a/tests/Alchemy/Tests/Phrasea/Media/Subdef/Specification/PdfSpecificationTest.php b/tests/Alchemy/Tests/Phrasea/Media/Subdef/Specification/PdfSpecificationTest.php
new file mode 100644
index 0000000000..bbe521c509
--- /dev/null
+++ b/tests/Alchemy/Tests/Phrasea/Media/Subdef/Specification/PdfSpecificationTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace Alchemy\Tests\Phrasea\Media\Subdef\Specification;
+
+use Alchemy\Phrasea\Media\Subdef\Specification\PdfSpecification;
+
+class PdfTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\Specification\PdfSpecification::getType
+     */
+    public function testGetType()
+    {
+        $specs = new PdfSpecification();
+        $this->assertEquals(PdfSpecification::TYPE_PDF, $specs->getType());
+    }
+}
\ No newline at end of file