diff --git a/Standard/StandardInterface.php b/Standard/StandardInterface.php
new file mode 100644
index 0000000..74ce45a
--- /dev/null
+++ b/Standard/StandardInterface.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace Padam87\PdfPreflight\Standard;
+
+use Padam87\PdfPreflight\Rule\RuleInterface;
+use Smalot\PdfParser\Document;
+
+interface StandardInterface
+{
+    /**
+     * @return RuleInterface[]
+     */
+    public function getRules(): array;
+
+    public function validate(Document $document): array;
+}
diff --git a/Standard/X1a.php b/Standard/X1a.php
new file mode 100644
index 0000000..b91f703
--- /dev/null
+++ b/Standard/X1a.php
@@ -0,0 +1,67 @@
+<?php
+
+namespace Padam87\PdfPreflight\Standard;
+
+use Padam87\PdfPreflight\Rule\NoRgbImages;
+use Padam87\PdfPreflight\Rule\NoRgbText;
+use Smalot\PdfParser\Document;
+
+
+/**
+ * The PDF/X-1a standard
+ *
+ * - [ ] PDF must be version 1.3 or earlier
+ * - [ ] Page must not be separated
+ * - [ ] OutputIntent must be present
+ * - [ ] OutputIntent must contain exactly one PDF/X entry
+ * - [ ] OutputConditionIdentifier required in PDF/X OutputIntent
+ * - [ ] Destination profile must be embedded or Registry Name must be filled out
+ * - [ ] OutputIntent Info key must be present
+ * - [ ] Destination profile must be ICC output profile (type ‘prtr’)
+ * - [x] Only DeviceCMYK and spot colors allowed
+ * - [ ] Fonts must be embedded
+ * - [ ] LZW compression prohibited
+ * - [ ] Trapped key must be True or False
+ * - [ ] GTS_PDFXVersion key must be present
+ * - [ ] Invalid GTS_PDFXVersion (PDF/X-1a)
+ * - [ ] Invalid GTS_PDFXConformance (PDF/X-1a)
+ * - [ ] CreationDate, ModDate and Title required
+ * - [ ] Document ID must be present in PDF trailer
+ * - [ ] Either TrimBox or ArtBox must be present
+ * - [ ] Page boxes must be nested properly
+ * - [ ] Transfer curves prohibited
+ * - [ ] Halftone must be of Type 1 or 5
+ * - [ ] Halftone Name key prohibited
+ * - [ ] Embedded PostScript prohibited
+ * - [ ] Encryption prohibited
+ * - [ ] Alternate image must not be default for printing
+ * - [ ] Annotation and Acrobat form elements must be outside of TrimBox and BleedBox
+ * - [ ] Actions and JavaScript prohibited
+ * - [ ] Operators not defined in PDF 1.3 prohibited
+ * - [ ] File specifications not allowed
+ * - [ ] Transparency not allowed
+ */
+class X1a implements StandardInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getRules(): array
+    {
+        return [
+            new NoRgbImages(),
+            new NoRgbText(),
+        ];
+    }
+
+    public function validate(Document $document): array
+    {
+        $errors = [];
+
+        foreach ($this->getRules() as $rule) {
+            $errors[get_class($rule)] = $rule->validate($document);
+        }
+
+        return $errors;
+    }
+}
diff --git a/test.php b/test.php
index c1ba5c1..77e1fc4 100644
--- a/test.php
+++ b/test.php
@@ -4,15 +4,9 @@
 
 include 'vendor/autoload.php';
 
-use Padam87\PdfPreflight\Rule\MaxInkDensityImage;
-use Padam87\PdfPreflight\Rule\MaxInkDensityText;
-use Padam87\PdfPreflight\Rule\NoRgbImages;
-use Padam87\PdfPreflight\Rule\ImageMinDpi;
-use Padam87\PdfPreflight\Rule\NoRgbText;
-use Padam87\PdfPreflight\Rule\RuleInterface;
+use Padam87\PdfPreflight\Standard\X1a;
 use Smalot\PdfParser\Object as XObject;
 use Smalot\PdfParser\Parser;
-use Symfony\Component\Stopwatch\Stopwatch;
 use Symfony\Component\VarDumper\Cloner\Stub;
 use Symfony\Component\VarDumper\Cloner\VarCloner;
 use Symfony\Component\VarDumper\Dumper\CliDumper;
@@ -35,45 +29,12 @@
     $dumper->dump($cloner->cloneVar($var));
 });
 
-/** @var RuleInterface[] $rules */
-$rules = [
-    new ImageMinDpi(),
-    new NoRgbImages(),
-    new NoRgbText(),
-    new MaxInkDensityImage(300),
-    new MaxInkDensityText(100),
-];
-
-$stopwatch = new Stopwatch();
-$stopwatch->start('parse');
-
 $parser = new Parser();
 //$document = $parser->parseFile('./gls.pdf');
-$document = $parser->parseFile('./test.pdf');
-
-$event = $stopwatch->stop('parse');
-
-dump($event->getDuration());
-
-$stopwatch->start('preflight');
-
-foreach ($rules as $rule) {
-    $errors = $rule->validate($document);
-
-    $event = $stopwatch->lap('preflight');
-    $periods = $event->getPeriods();
-    $period = end($periods);
-
-    dump(
-        [
-            'rule' => get_class($rule),
-            'errors' => $errors,
-            'duration' => $period->getDuration(),
-        ]
-    );
-}
+//$document = $parser->parseFile('./test.pdf');
+$document = $parser->parseFile('./hotel.pdf');
 
-$event = $stopwatch->stop('preflight');
+$standard = new X1a();
 
-dump($event->getDuration());
+dump($standard->validate($document));