diff --git a/jumpapp/classes/Language.php b/jumpapp/classes/Language.php
index 4c70ed2..99d6963 100644
--- a/jumpapp/classes/Language.php
+++ b/jumpapp/classes/Language.php
@@ -14,6 +14,7 @@
 namespace Jump;
 
 use \Jump\Exceptions\ConfigException;
+use \Jump\Pages\ErrorPage;
 
 /**
  * Defines a class for loading language strings form available translations files, caching
@@ -64,7 +65,7 @@ class Language {
         try {
             $locale = new \Utopia\Locale\Locale($this->config->get('language'));
         } catch (\Exception) {
-            (new Pages\ErrorPage($this->cache, $this->config, 500, 'Provided language code has no corresponding translation file.'))->init();
+            ErrorPage::display($this->config, 500, 'Provided language code has no corresponding translation file.');
         }
 
         $this->locale = $locale;
diff --git a/jumpapp/classes/Main.php b/jumpapp/classes/Main.php
index 1e77267..9634f34 100644
--- a/jumpapp/classes/Main.php
+++ b/jumpapp/classes/Main.php
@@ -13,6 +13,9 @@
 
 namespace Jump;
 
+use \Jump\Pages\ErrorPage;
+use \Tracy\Debugger;
+
 class Main {
 
     private Cache $cache;
@@ -23,7 +26,18 @@ class Main {
     private \Nette\Http\Session $session;
 
     public function __construct() {
+        // We can't do anything without the config object.
         $this->config = new Config();
+
+        // Set something to either display detailed debugging info or handle exceptions
+        // as early as possible during initialisation.
+        if ($this->config->get('debug')) {
+            Debugger::enable(Debugger::Development);
+        } else {
+            set_exception_handler([$this, 'exception_handler']);
+        }
+
+        // Carry on setting things up.
         $this->cache = new Cache($this->config);
         $this->router = new \Nette\Routing\RouteList;
         $this->language = new Language($this->config, $this->cache);
@@ -49,7 +63,7 @@ class Main {
 		]);
     }
 
-    function init() {
+    public function init() {
         // Create a request object based on globals so we can utilise url rewriting etc.
         $this->request = (new \Nette\Http\RequestFactory)->fromGlobals();
 
@@ -70,4 +84,15 @@ class Main {
         return $page->get_output();
     }
 
+    /**
+     * Global exception handler, display friendly message if something goes wrong.
+     *
+     * @param $exception
+     * @return void
+     */
+    public function exception_handler($exception): void {
+        error_log($exception->getMessage());
+        ErrorPage::display($this->config, 500, 'Something went wrong, please use debug option to see details.');
+    }
+
 }
diff --git a/jumpapp/classes/Pages/ErrorPage.php b/jumpapp/classes/Pages/ErrorPage.php
index 86f35af..9015597 100644
--- a/jumpapp/classes/Pages/ErrorPage.php
+++ b/jumpapp/classes/Pages/ErrorPage.php
@@ -14,26 +14,17 @@
 namespace Jump\Pages;
 
 class ErrorPage {
-
-    private string $content;
-
-    public function __construct(private \Jump\Cache $cache, private \Jump\Config $config, private int $httpcode, public string $message) {
-        $this->mustache = new \Mustache_Engine([
-            'loader' => new \Mustache_Loader_FilesystemLoader($this->config->get('templatedir'))
+    public static function display(\Jump\Config $config, int $httpcode, string $message) {
+        $mustache = new \Mustache_Engine([
+            'loader' => new \Mustache_Loader_FilesystemLoader($config->get('templatedir'))
         ]);
-        $this->content = $cache->load(cachename: 'templates/errorpage', key: $httpcode.md5($message), callback: function() use ($httpcode, $message) {
-            $template = $this->mustache->loadTemplate('errorpage');
-            return $template->render([
-                'code' => $httpcode,
-                'message' => $message,
-                'wwwurl' => $this->config->get_wwwurl(),
-            ]);
-        });
+        $template = $mustache->loadTemplate('errorpage');
+        $content = $template->render([
+            'code' => $httpcode,
+            'message' => $message,
+            'wwwurl' => $config->get_wwwurl(),
+        ]);
+        http_response_code($httpcode);
+        die($content);
     }
-
-    public function init() {
-        http_response_code($this->httpcode);
-        die($this->content);
-    }
-
 }
diff --git a/jumpapp/classes/Pages/TagPage.php b/jumpapp/classes/Pages/TagPage.php
index 9962f35..9fd4c56 100644
--- a/jumpapp/classes/Pages/TagPage.php
+++ b/jumpapp/classes/Pages/TagPage.php
@@ -63,7 +63,7 @@ class TagPage extends AbstractPage {
                 $taggedsites = $sites->get_sites_by_tag($this->tagname);
             }
             catch (TagNotFoundException) {
-                (new ErrorPage($this->cache, $this->config, 404, 'There are no sites with this tag.'))->init();
+                ErrorPage::display($this->config, 404, 'There are no sites with this tag.');
             }
             $template = $this->mustache->loadTemplate('sites');
             return $template->render([
diff --git a/jumpapp/composer.json b/jumpapp/composer.json
index e2be85e..e8f54a5 100644
--- a/jumpapp/composer.json
+++ b/jumpapp/composer.json
@@ -20,6 +20,7 @@
         "guzzlehttp/guzzle": "^7.0",
         "unsplash/unsplash": "3.2.1",
         "divineomega/array_undot": "^4.1",
-        "utopia-php/locale": "^0.6.0"
+        "utopia-php/locale": "^0.6.0",
+        "tracy/tracy": "^2.10"
     }
 }
diff --git a/jumpapp/composer.lock b/jumpapp/composer.lock
index 1f24898..9d35ef0 100644
--- a/jumpapp/composer.lock
+++ b/jumpapp/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "5fcb97502e7722b9364b85cdd3a4f851",
+    "content-hash": "124fb3f5325190e7a3c8284b42e9e304",
     "packages": [
         {
             "name": "arthurhoaro/favicon",
@@ -1502,6 +1502,80 @@
             ],
             "time": "2023-02-21T19:46:44+00:00"
         },
+        {
+            "name": "tracy/tracy",
+            "version": "v2.10.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/nette/tracy.git",
+                "reference": "882fee7cf4258a602ad4a37461e837ed2ca1406b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/nette/tracy/zipball/882fee7cf4258a602ad4a37461e837ed2ca1406b",
+                "reference": "882fee7cf4258a602ad4a37461e837ed2ca1406b",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "ext-session": "*",
+                "php": ">=8.0 <8.3"
+            },
+            "conflict": {
+                "nette/di": "<3.0"
+            },
+            "require-dev": {
+                "latte/latte": "^2.5",
+                "nette/di": "^3.0",
+                "nette/mail": "^3.0",
+                "nette/tester": "^2.2",
+                "nette/utils": "^3.0",
+                "phpstan/phpstan": "^1.0",
+                "psr/log": "^1.0 || ^2.0 || ^3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.10-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "src/Tracy/functions.php"
+                ],
+                "classmap": [
+                    "src"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "David Grudl",
+                    "homepage": "https://davidgrudl.com"
+                },
+                {
+                    "name": "Nette Community",
+                    "homepage": "https://nette.org/contributors"
+                }
+            ],
+            "description": "😎  Tracy: the addictive tool to ease debugging PHP code for cool developers. Friendly design, logging, profiler, advanced features like debugging AJAX calls or CLI support. You will love it.",
+            "homepage": "https://tracy.nette.org",
+            "keywords": [
+                "Xdebug",
+                "debug",
+                "debugger",
+                "nette",
+                "profiler"
+            ],
+            "support": {
+                "issues": "https://github.com/nette/tracy/issues",
+                "source": "https://github.com/nette/tracy/tree/v2.10.2"
+            },
+            "time": "2023-03-29T12:34:53+00:00"
+        },
         {
             "name": "unsplash/unsplash",
             "version": "3.2.1",
diff --git a/jumpapp/config.php b/jumpapp/config.php
index a49e277..de156fa 100644
--- a/jumpapp/config.php
+++ b/jumpapp/config.php
@@ -29,6 +29,10 @@ return [
     // Where is the cache storage directory, should not be public.
     'cachedir'       => getenv('CACHEDIR')       ?:   '/var/www/cache',
 
+    // Soemthing not working? Set this to "true" to display detailed
+    // debugging information.
+    'debug'          => getenv('DEBUG')          ?:   false,
+
     // Display alternative layout of sites list.
     'altlayout'      => getenv('ALTLAYOUT')      ?:   false,
     // Should the clock be displayed?