diff --git a/app/Helpers/Document/WithTypeHelpers.php b/app/Helpers/Document/WithTypeHelpers.php
new file mode 100644
index 000000000000..17609f017254
--- /dev/null
+++ b/app/Helpers/Document/WithTypeHelpers.php
@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2021. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://opensource.org/licenses/AAL
+ */
+
+namespace App\Helpers\Document;
+
+trait WithTypeHelpers
+{
+    /**
+     * Returns boolean based on checks for image.
+     * 
+     * @return bool 
+     */
+    public function isImage(): bool
+    {
+        if (in_array($this->type, ['png', 'svg', 'jpeg', 'jpg', 'tiff', 'gif'])) {
+            return true;
+        }
+
+        return false;
+    }
+}
diff --git a/app/Models/Document.php b/app/Models/Document.php
index 70a5d8b8a5ff..20059e724ad2 100644
--- a/app/Models/Document.php
+++ b/app/Models/Document.php
@@ -11,6 +11,7 @@
 
 namespace App\Models;
 
+use App\Helpers\Document\WithTypeHelpers;
 use App\Models\Filterable;
 use Illuminate\Database\Eloquent\SoftDeletes;
 use Illuminate\Support\Facades\Storage;
@@ -19,6 +20,7 @@ class Document extends BaseModel
 {
     use SoftDeletes;
     use Filterable;
+    use WithTypeHelpers;
 
     const DOCUMENT_PREVIEW_SIZE = 300; // pixels
 
diff --git a/app/Utils/HtmlEngine.php b/app/Utils/HtmlEngine.php
index fd6335276e53..51be7e78d30b 100644
--- a/app/Utils/HtmlEngine.php
+++ b/app/Utils/HtmlEngine.php
@@ -756,6 +756,10 @@ html {
         $container->setAttribute('style', 'display:grid; grid-auto-flow: row; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(2, 1fr);');
 
         foreach ($this->entity->documents as $document) {
+            if (!$document->isImage()) {
+                continue;
+            }
+
             $image = $dom->createElement('img');
 
             $image->setAttribute('src', $document->generateUrl());
diff --git a/tests/Unit/WithTypeHelpersTest.php b/tests/Unit/WithTypeHelpersTest.php
new file mode 100644
index 000000000000..563aafed02af
--- /dev/null
+++ b/tests/Unit/WithTypeHelpersTest.php
@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2021. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://opensource.org/licenses/AAL
+ */
+
+namespace Tests\Unit;
+
+use App\Models\Account;
+use App\Models\Company;
+use App\Models\Document;
+use Tests\TestCase;
+
+class WithTypeHelpersTest extends TestCase
+{
+    public function testIsImageHelper(): void
+    {
+        $account = Account::factory()->create();
+
+        $company = Company::factory()->create([
+            'account_id' => $account->id,
+        ]);
+
+        /** @var Document */
+        $document = Document::factory()->create([
+            'company_id' => $company->id,
+            'type' => 'jpeg',
+        ]);
+
+        $this->assertTrue($document->isImage());
+
+        /** @var Document */
+        $document = Document::factory()->create([
+            'company_id' => $company->id,
+        ]);
+
+        $this->assertFalse($document->isImage());
+    }
+}