diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 1d16099..0e46631 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -1,215 +1,5 @@
 parameters:
 	ignoreErrors:
-		-
-			message: "#^Dead catch \\- Exception is never thrown in the try block\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:castType\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:cleanOutlineWithParagraphs\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:cleanParagraphs\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:contentKeywords\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:contentKeywordsWithScores\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:csvDecode\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:csvDecodeRaw\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:csvDecodeWithHeader\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:csvDecodeWithHeaderRaw\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:externalLinks\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:h1\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:h2\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:h3\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:h4\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:h5\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:h6\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:headers\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:headings\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:images\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:imagesWithDetails\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:internalLinks\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:keywords\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:links\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:linksWithDetails\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:lists\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:metaTags\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:outlineWithParagraphs\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:parseCsv\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:parseCsvWithHeader\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:parseJson\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:parseXml\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:rssRaw\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:searchIndexRaw\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:sitemapRaw\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:viewport\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\Core\\:\\:xmlDecode\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^PHPDoc tag @var for variable \\$array has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Core.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\PHPScraper\\:\\:__call\\(\\) has parameter \\$arguments with no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/PHPScraper.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\PHPScraper\\:\\:__construct\\(\\) has parameter \\$config with no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/PHPScraper.php
-
-		-
-			message: "#^Method Spekulatius\\\\PHPScraper\\\\PHPScraper\\:\\:setConfig\\(\\) has parameter \\$config with no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/PHPScraper.php
-
-		-
-			message: "#^Property Spekulatius\\\\PHPScraper\\\\PHPScraper\\:\\:\\$config type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/PHPScraper.php
-
 		-
 			message: "#^Access to an undefined property Spekulatius\\\\PHPScraper\\\\PHPScraper\\:\\:\\$baseHref\\.$#"
 			count: 2
diff --git a/phpstan.neon b/phpstan.neon
index 1f03ea9..c606fb6 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -4,8 +4,9 @@ includes:
 parameters:
   level: 9
   paths:
-    - src
-    - tests
-  excludePaths:
-    - vendor
+    - src/
+    - tests/
   tmpDir: ./.tmp/phpstan/
+  ignoreErrors:
+    # TODO Add those return types.
+    - '#return type has no value type specified in iterable type array\.$#'
diff --git a/src/PHPScraper.php b/src/PHPScraper.php
index 998915d..6a3ff58 100644
--- a/src/PHPScraper.php
+++ b/src/PHPScraper.php
@@ -11,23 +11,29 @@
 use Symfony\Component\BrowserKit\HttpBrowser;
 use Symfony\Component\HttpClient\HttpClient as SymfonyHttpClient;
 
+/**
+ * @phpstan-type PHPScraperConfig array{'follow_redirects'?: bool, 'follow_meta_refresh'?: bool, 'max_redirects'?: int, 'agent'?: string, 'proxy'?: string|null, 'timeout'?: int, 'disable_ssl'?: bool}
+ */
 class PHPScraper
 {
     /**
      * Holds the config for the clients.
      *
-     * @var array
+     * @var PHPScraperConfig
      */
     protected $config = [];
 
     /**
      * Holds the Core class. It handles the actual scraping.
      *
-     * @var \Spekulatius\PHPScraper\Core;
+     * @var \Spekulatius\PHPScraper\Core
      */
     protected $core = null;
 
-    public function __construct(?array $config = [])
+    /**
+     * @param PHPScraperConfig $config
+     */
+    public function __construct(array $config = [])
     {
         // Prepare the core. It delegates all further processing.
         $this->core = new Core;
@@ -39,9 +45,9 @@ public function __construct(?array $config = [])
     /**
      * Sets the config, generates the required Clients and updates the core with the new clients.
      *
-     * @param ?array $config = []
+     * @param PHPScraperConfig $config
      */
-    public function setConfig(?array $config = []): self
+    public function setConfig(array $config = []): self
     {
         // Define the default values
         $defaults = [
@@ -86,7 +92,7 @@ public function setConfig(?array $config = []): self
         ];
 
         // Add the defaults in
-        $this->config = array_merge($defaults, $config ?? []);
+        $this->config = array_merge($defaults, $config);
 
         // Symfony HttpClient
         $httpClient = SymfonyHttpClient::create([
@@ -126,7 +132,7 @@ public function __get(string $name)
      * Catches the method calls and tries to satisfy them.
      *
      * @param string $name
-     * @param array $arguments
+     * @param array<mixed> $arguments
      * @return mixed
      */
     public function __call(string $name, array $arguments = [])
diff --git a/src/UsesContent.php b/src/UsesContent.php
index 142cc63..cf59d08 100644
--- a/src/UsesContent.php
+++ b/src/UsesContent.php
@@ -303,17 +303,22 @@ public function outlineWithParagraphs(): array
      */
     public function cleanOutlineWithParagraphs(): array
     {
-        $result = $this->filterExtractAttributes('//h1|//h2|//h3|//h4|//h5|//h6|//p', ['_name', '_text']);
+        $elementsNameAndText = $this->filterExtractAttributes('//h1|//h2|//h3|//h4|//h5|//h6|//p', ['_name', '_text']);
 
-        /** @var array $array */
-        foreach ($result as $index => $array) {
-            if ($array[1] !== '') {
-                $result[$index] = array_combine(['tag', 'content'], $array);
-                $result[$index]['content'] = trim($result[$index]['content']);
+        /** @var array<string> $nameAndText */
+        foreach ($elementsNameAndText as $index => $nameAndText) {
+            // Element has no text.
+            if ($nameAndText[1] === '') {
+                continue;
             }
+
+            $elementsNameAndText[$index] = [
+                'tag' => $nameAndText[0],
+                'content' => trim($nameAndText[1]),
+            ];
         }
 
-        return $result;
+        return $elementsNameAndText;
     }
 
     /**
diff --git a/src/UsesFileParsers.php b/src/UsesFileParsers.php
index 8ce7aec..9fcb1e7 100644
--- a/src/UsesFileParsers.php
+++ b/src/UsesFileParsers.php
@@ -133,7 +133,11 @@ public function csvDecodeWithHeader(
         return $csv;
     }
 
-    // Helper method to cast types
+    /**
+     * Helper method to cast types
+     *
+     * @return int|float|string
+     */
     public function castType(string $entry)
     {
         // Looks like an int?
@@ -279,7 +283,7 @@ public function parseJson(?string $jsonStringOrUrl = null): array
             if ($jsonStringOrUrl !== null) {
                 // Simple: Try to parse what we have been given
                 try {
-                    $result = json_decode($jsonStringOrUrl, true);
+                    $result = json_decode($jsonStringOrUrl, true, 512, JSON_THROW_ON_ERROR);
                 } catch (\Exception $e) {
                     // We don't do anything if it fails - likely we have an URL. Let's continue below.
                 }