diff --git a/app.php b/app.php
index 0b585bf..9f99446 100644
--- a/app.php
+++ b/app.php
@@ -178,6 +178,7 @@ $f3->route('POST /image2svg',
 $f3->route('POST /sign',
     function($f3) {
         $filename = null;
+        $filigrane = $f3->get('POST.filigrane');
         $tmpfile = tempnam($f3->get('UPLOADS'), 'pdfsignature_sign_'.uniqid("", true));
         unlink($tmpfile);
         $svgFiles = [];
@@ -215,6 +216,9 @@ $f3->route('POST /sign',
 
         PDFSignature::createPDFFromSvg($svgFiles, $tmpfile.'.svg.pdf');
         PDFSignature::addSvgToPDF($tmpfile.'.pdf', $tmpfile.'.svg.pdf', $tmpfile.'_signe.pdf');
+        if ($filigrane) {
+            PDFSignature::convertTextToFiligrane($filigrane, $tmpfile.'_signe.pdf');
+        }
 
         Web::instance()->send($tmpfile.'_signe.pdf', null, 0, TRUE, $filename);
 
diff --git a/lib/PDFSignature.class.php b/lib/PDFSignature.class.php
index a1038f2..9e9baa8 100644
--- a/lib/PDFSignature.class.php
+++ b/lib/PDFSignature.class.php
@@ -196,6 +196,27 @@ class PDFSignature
         }
     }
 
+    public static function convertTextToFiligrane($text, $outputFile)
+    {
+        // Création svg
+        // TODO
+
+        // conversion du filigrane en pdf
+        shell_exec(sprintf("rsvg-convert -f pdf -o %s %s",
+            escapeshellarg($outputFile.'_filigrane.pdf'),
+            escapeshellarg($outputFile.'_filigrane.svg')
+        ));
+
+        // on applique le filigrane
+        shell_exec(sprintf("pdftk %s background %s output %s",
+            escapeshellarg($outputFile),
+            escapeshellarg($outputFile.'_filigrane.pdf'),
+            escapeshellarg($outputFile.'_withfiligrane.pdf')
+        ));
+
+        rename($outputFile.'_withfiligrane.pdf', $outputFile);
+    }
+
     public function clean() {
         foreach($this->toClean as $path) {
             if(strpos($path, $this->pathHash) !== false) {