diff --git a/src/class-convertkit-api-traits.php b/src/class-convertkit-api-traits.php
index 7d564be..27a0163 100644
--- a/src/class-convertkit-api-traits.php
+++ b/src/class-convertkit-api-traits.php
@@ -2682,6 +2682,11 @@ public function convert_relative_to_absolute_urls(\DOMNodeList $elements, string
                 continue;
             }
 
+            // Skip if the attribute's value is an anchor.
+            if (strpos($element->getAttribute($attribute), '#') !== false) {
+                continue;
+            }
+
             // Remove element if it's rocket-loader.min.js. Including it prevents landing page redirects from working.
             if (strpos($element->getAttribute($attribute), 'rocket-loader.min.js') !== false) {
                 if ($element->parentNode instanceof \DOMNode) {
diff --git a/tests/Integration/KitMethodsTest.php b/tests/Integration/KitMethodsTest.php
new file mode 100644
index 0000000..2b1df4c
--- /dev/null
+++ b/tests/Integration/KitMethodsTest.php
@@ -0,0 +1,155 @@
+<?php
+
+namespace Tests;
+
+use lucatume\WPBrowser\TestCase\WPTestCase;
+
+/**
+ * Test methods that don't interact with the Kit API,
+ * such as convert_relative_to_absolute_urls().
+ *
+ * @since   2.6.2
+ */
+class KitMethodsTest extends WPTestCase
+{
+	/**
+	 * Kit API Class
+	 *
+	 * @var object
+	 */
+	protected $api;
+
+	/**
+	 * Performs actions before each test.
+	 *
+	 * @since   2.6.2
+	 */
+	public function setUp(): void
+	{
+		parent::setUp();
+
+		// Include class from /src to test.
+		require_once 'src/class-convertkit-api-traits.php';
+		require_once 'src/class-convertkit-api-v4.php';
+
+		// Initialize the classes we want to test.
+		$this->api = new \ConvertKit_API_V4(
+			client_id: $_ENV['CONVERTKIT_OAUTH_CLIENT_ID'],
+			redirect_uri: $_ENV['CONVERTKIT_OAUTH_REDIRECT_URI'],
+			access_token: $_ENV['CONVERTKIT_OAUTH_ACCESS_TOKEN'],
+			refresh_token: $_ENV['CONVERTKIT_OAUTH_REFRESH_TOKEN']
+		);
+	}
+
+	/**
+	 * Test the convert_relative_to_absolute_urls() method.
+	 *
+	 * @since   2.6.2
+	 *
+	 * @return  void
+	 */
+	public function testConvertRelativeToAbsoluteUrls()
+	{
+		// Setup HTML in DOMDocument.
+		$html = new \DOMDocument();
+		$html->loadHTML(
+			'<html>
+            <head>
+                <script type="text/javascript" src="rocket-loader.min.js"></script>
+                <link rel="stylesheet" href="//fonts.googleapis.com">
+            </head>
+            <body>
+                <a href="/test">Test</a>
+                <a href="#anchor">Anchor</a>
+                <img src="/test.jpg" />
+                <script type="text/javascript" src="/test.js"></script>
+                <form action="/test">Test</form>
+            </body>
+        </html>'
+		);
+
+		// Define URL to prepend to relative URLs.
+		$url_scheme_host_only = 'https://example.com';
+
+		// Convert relative URLs to absolute URLs for elements we want to test.
+		$this->api->convert_relative_to_absolute_urls(
+			$html->getElementsByTagName('a'),
+			'href',
+			$url_scheme_host_only
+		);
+		$this->api->convert_relative_to_absolute_urls(
+			$html->getElementsByTagName('link'),
+			'href',
+			$url_scheme_host_only
+		);
+		$this->api->convert_relative_to_absolute_urls(
+			$html->getElementsByTagName('img'),
+			'src',
+			$url_scheme_host_only
+		);
+		$this->api->convert_relative_to_absolute_urls(
+			$html->getElementsByTagName('script'),
+			'src',
+			$url_scheme_host_only
+		);
+		$this->api->convert_relative_to_absolute_urls(
+			$html->getElementsByTagName('form'),
+			'action',
+			$url_scheme_host_only
+		);
+
+		// Fetch HTML string.
+		$output = $html->saveHTML();
+
+		// Assert string contains expected HTML elements that should not be modified.
+		$this->assertStringContainsString('<link rel="stylesheet" href="//fonts.googleapis.com">', $output);
+
+		// Assert string does not contain HTML elements that should be removed.
+		$this->assertStringNotContainsString(
+			'<script type="text/javascript" src="rocket-loader.min.js"></script>',
+			$output
+		);
+
+		// Assert string contains expected HTML elements that should be modified.
+		$this->assertStringContainsString(
+			'<a href="' . $url_scheme_host_only . '/test">Test</a>',
+			$output
+		);
+		$this->assertStringContainsString(
+			'<img src="' . $url_scheme_host_only . '/test.jpg">',
+			$output
+		);
+		$this->assertStringContainsString(
+			'<script type="text/javascript" src="' . $url_scheme_host_only . '/test.js"></script>',
+			$output
+		);
+		$this->assertStringContainsString(
+			'<form action="' . $url_scheme_host_only . '/test">Test</form>',
+			$output
+		);
+
+		// Assert string contains expected HTML elements that should not be modified.
+		$this->assertStringContainsString(
+			'<a href="#anchor">Anchor</a>',
+			$output
+		);
+	}
+
+	/**
+	 * Test that the get_body_html() method returns the expected HTML.
+	 *
+	 * @since   2.6.2
+	 */
+	public function testGetBodyHtml()
+	{
+		$content = '<h1>Vantar þinn ungling sjálfstraust í stærðfræði?</h1><p>This is a test</p>';
+		$html    = new \DOMDocument();
+		$html->loadHTML(
+			'
+            <html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head>
+            <body>' . $content . '</body>
+            </html>'
+		);
+		$this->assertEquals($content, $this->api->get_body_html($html));
+	}
+}
