diff --git a/assets/css/csvxml.css b/public/assets/css/csvxml.css
similarity index 100%
rename from assets/css/csvxml.css
rename to public/assets/css/csvxml.css
diff --git a/assets/css/csvxml.min.css b/public/assets/css/csvxml.min.css
similarity index 100%
rename from assets/css/csvxml.min.css
rename to public/assets/css/csvxml.min.css
diff --git a/assets/css/editMenu.css b/public/assets/css/editMenu.css
similarity index 100%
rename from assets/css/editMenu.css
rename to public/assets/css/editMenu.css
diff --git a/assets/fonts/SourceSansPro-Light.ttf b/public/assets/fonts/SourceSansPro-Light.ttf
similarity index 100%
rename from assets/fonts/SourceSansPro-Light.ttf
rename to public/assets/fonts/SourceSansPro-Light.ttf
diff --git a/assets/fonts/SourceSansPro-Regular.ttf b/public/assets/fonts/SourceSansPro-Regular.ttf
similarity index 100%
rename from assets/fonts/SourceSansPro-Regular.ttf
rename to public/assets/fonts/SourceSansPro-Regular.ttf
diff --git a/assets/fonts/SourceSansPro-Regular.woff2 b/public/assets/fonts/SourceSansPro-Regular.woff2
similarity index 100%
rename from assets/fonts/SourceSansPro-Regular.woff2
rename to public/assets/fonts/SourceSansPro-Regular.woff2
diff --git a/assets/img/mdlogo-code.svg b/public/assets/img/mdlogo-code.svg
similarity index 100%
rename from assets/img/mdlogo-code.svg
rename to public/assets/img/mdlogo-code.svg
diff --git a/assets/img/mdlogo-csvxml.svg b/public/assets/img/mdlogo-csvxml.svg
similarity index 100%
rename from assets/img/mdlogo-csvxml.svg
rename to public/assets/img/mdlogo-csvxml.svg
diff --git a/assets/js/csvxml-overview.js b/public/assets/js/csvxml-overview.js
similarity index 100%
rename from assets/js/csvxml-overview.js
rename to public/assets/js/csvxml-overview.js
diff --git a/assets/js/csvxml-overview.min.js b/public/assets/js/csvxml-overview.min.js
similarity index 100%
rename from assets/js/csvxml-overview.min.js
rename to public/assets/js/csvxml-overview.min.js
diff --git a/assets/js/newToolTip.js b/public/assets/js/newToolTip.js
similarity index 100%
rename from assets/js/newToolTip.js
rename to public/assets/js/newToolTip.js
diff --git a/csv.php b/public/csv.php
similarity index 95%
rename from csv.php
rename to public/csv.php
index 63e79b4..263f893 100644
--- a/csv.php
+++ b/public/csv.php
@@ -5,7 +5,7 @@
  * @author Joshua Ramon Enslin <joshua@museum-digital.de>
  */
 declare(strict_types = 1);
-require_once __DIR__ . "/functions/functions.php";
+require_once __DIR__ . "/../functions/functions.php";
 
 if (session_status() != PHP_SESSION_ACTIVE) {
     session_start();
@@ -31,7 +31,7 @@ if (!empty($_POST) and !empty($_POST['selectedFields'])) {
 }
 else $selectionActive = false;
 
-require __DIR__ . "/values/availableFields.php";
+require __DIR__ . "/../values/availableFields.php";
 
 $line1 = $line2 = $line3 = $line4 = [];
 
diff --git a/index.php b/public/index.php
similarity index 97%
rename from index.php
rename to public/index.php
index fdc737d..a4dcada 100644
--- a/index.php
+++ b/public/index.php
@@ -7,7 +7,7 @@
  * @author Joshua Ramon Enslin <joshua@museum-digital.de>
  */
 declare(strict_types = 1);
-require_once __DIR__ . "/functions/functions.php";
+require_once __DIR__ . "/../functions/functions.php";
 
 if (session_status() != PHP_SESSION_ACTIVE) {
     session_start();
@@ -57,7 +57,7 @@ echo '
     </div>
 ';
 
-require __DIR__ . "/values/availableFields.php";
+require __DIR__ . "/../values/availableFields.php";
 
 $tooltips = [];
 foreach ($availableFields as $headline => $fields) {
diff --git a/index3.php b/public/index3.php
similarity index 98%
rename from index3.php
rename to public/index3.php
index 8781059..df5e23d 100644
--- a/index3.php
+++ b/public/index3.php
@@ -1,6 +1,6 @@
 <?PHP
 declare(strict_types = 1);
-require_once __DIR__ . "/functions/functions.php";
+require_once __DIR__ . "/../functions/functions.php";
 
 if (session_status() != PHP_SESSION_ACTIVE) {
     session_start();
@@ -21,11 +21,11 @@ else if (!isset($_SESSION['lang'])) {
 $lang = $_SESSION['lang'];
 
 $filename = $_GET['fnam'];
-$csv_datei = 'csv/' . $filename;
+$csv_datei = MD_STD::realpath(__DIR__ . '/../csv/' . $filename);
 
 // Get allowed values * $fieldNoMultiplicator
 $fieldNoMultiplicator = 10;
-require __DIR__ . "/values/availableFields.php";
+require __DIR__ . "/../values/availableFields.php";
 
 $allowed = $eventpart = $eventpartsure = $fieldsWithDependency = $fieldsWithAllowedValueSet = [];
 
@@ -99,7 +99,7 @@ else {
 
 
 //// Get values into memory for following checks
-$fp = fopen ( $csv_datei, 'r' );
+$fp = fopen($csv_datei, 'r');
 $y = 0;
 while ($zeile = fgetcsv($fp, 100000, ';')) {
 
diff --git a/index6.php b/public/index6.php
similarity index 89%
rename from index6.php
rename to public/index6.php
index 48f64ca..6a4134f 100644
--- a/index6.php
+++ b/public/index6.php
@@ -1,6 +1,6 @@
 <?PHP
 declare(strict_types = 1);
-require_once __DIR__ . "/functions/functions.php";
+require_once __DIR__ . "/../functions/functions.php";
 
 if (session_status() != PHP_SESSION_ACTIVE) {
     session_start();
@@ -24,14 +24,10 @@ if (empty($filename = trim($_GET['fnam'], " ,./"))) {
     echo "Error: Invalid file name";
     exit;
 }
-$csv_datei = __DIR__ . '/csv/' . $filename;
-if (!file_exists($csv_datei)) {
-    echo "Error: The CSV file does not exist.";
-    exit;
-}
+$csv_datei = MD_STD::realpath(__DIR__ . '/../csv/' . $filename);
 
-if (is_dir(__DIR__ . "/xml")) rrmdir(__DIR__ . '/xml');
-mkdir(__DIR__ . "/xml", 0755);
+if (is_dir(__DIR__ . "/../xml")) rrmdir(__DIR__ . '/../xml');
+mkdir(__DIR__ . "/../xml", 0755);
 
 if (!($fp = fopen($csv_datei, 'r'))) {
     throw new MDmainEntityNotExistentException("Failed opening file");
diff --git a/upload.php b/public/upload.php
similarity index 84%
rename from upload.php
rename to public/upload.php
index 56fe0f9..eedb021 100644
--- a/upload.php
+++ b/public/upload.php
@@ -1,8 +1,8 @@
 <?PHP
 declare(strict_types = 1);
-require_once __DIR__ . "/functions/functions.php";
+require_once __DIR__ . "/../functions/functions.php";
 
-$target = "csv/" . basename($_FILES['uploaded']['name']);
+$target = __DIR__ . "/../csv/" . basename($_FILES['uploaded']['name']);
 $targetpart = basename($_FILES['uploaded']['name']);
 
 if (session_status() != PHP_SESSION_ACTIVE) {
diff --git a/zipit.php b/public/zipit.php
similarity index 88%
rename from zipit.php
rename to public/zipit.php
index a378c58..75ccab0 100644
--- a/zipit.php
+++ b/public/zipit.php
@@ -1,10 +1,9 @@
 <?PHP
-require_once "inc/zip.php";
-
-require_once __DIR__ . "/functions/functions.php";
+require_once __DIR__ . "/../inc/zip.php";
+require_once __DIR__ . "/../functions/functions.php";
 
 $fileTime = date("D, d M Y H:i:s T");
-$fileDir = 'xml/';
+$fileDir = __DIR__ . '/../xml/';
 
 $zip = new Zip();
 //$zip->setComment("Example Zip file.\nCreated on " . date('l jS \of F Y h:i:s A'));
@@ -40,5 +39,5 @@ header("Content-Transfer-Encoding: binary");
 header("Content-Length: " . $length);
 echo $zipData;
 
-rrmdir(__DIR__ . '/xml');
+rrmdir(__DIR__ . '/../xml');
 
diff --git a/tests/csvTest.php b/tests/csvTest.php
new file mode 100644
index 0000000..6fad1b6
--- /dev/null
+++ b/tests/csvTest.php
@@ -0,0 +1,33 @@
+<?PHP
+/**
+ * This script contains tests for the home page.
+ *
+ * @author Joshua Ramon Enslin <joshua@jrenslin.de>
+ */
+declare(strict_types = 1);
+
+// phpcs:disable
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Test class for the start page.
+ */
+final class CsvTest extends TestCase {
+
+    /**
+     * Test for HTML output.
+     *
+     * @return void
+     */
+    public function testHTMLOutput():void {
+
+        include __DIR__ . "/../public/csv.php";
+        $output = $this->getActualOutput();
+
+        self::assertIsString($output);
+        ob_clean();
+
+    }
+
+}
diff --git a/tests/startPageTest.php b/tests/startPageTest.php
index 86f9a35..c0e4098 100644
--- a/tests/startPageTest.php
+++ b/tests/startPageTest.php
@@ -4,24 +4,28 @@
  *
  * @author Joshua Ramon Enslin <joshua@jrenslin.de>
  */
-declare(strict_types=1);
+declare(strict_types = 1);
 
 // phpcs:disable
 
 use PHPUnit\Framework\TestCase;
 
+/**
+ * Test class for the start page.
+ */
 final class StartPageTest extends TestCase {
 
+    /**
+     * Test for HTML output.
+     *
+     * @return void
+     */
     public function testHTMLOutput():void {
 
-        include __DIR__ . "/../index.php";
+        include __DIR__ . "/../public/index.php";
         $output = $this->getActualOutput();
 
-        self::assertEquals(
-            true,
-            is_string($output)
-        );
-
+        self::assertIsString($output);
         ob_clean();
 
     }