diff --git a/bridgetown.config.yml b/bridgetown.config.yml
index a7d314f..ec923fb 100644
--- a/bridgetown.config.yml
+++ b/bridgetown.config.yml
@@ -14,14 +14,14 @@
 # https://learnxinyminutes.com/docs/yaml/
 #
 
-url: "" # the base hostname & protocol for your site, e.g. https://example.com
+url: "https://test.com" # the base hostname & protocol for your site, e.g. https://example.com
 
 permalink: pretty
 template_engine: erb
 
 # Other options you might want to investigate:
-# 
+#
 # base_path: "/" # the subpath of your site, e.g. /blog
 # timezone: America/Los_Angeles
 # pagination:
-#   enabled: true
\ No newline at end of file
+#   enabled: true
diff --git a/plugins/builders/vercel_url.rb b/plugins/builders/vercel_url.rb
new file mode 100644
index 0000000..3e6f5bd
--- /dev/null
+++ b/plugins/builders/vercel_url.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class Builders::VercelUrl < SiteBuilder
+  def build
+    hook :site, :pre_render do |site|
+      next unless ENV["VERCEL_URL"] && ENV["VERCEL_ENV"] != "production"
+
+      Bridgetown.logger.info("Subbing Vercel URL")
+      site.config.update(url: "https://#{ENV["VERCEL_URL"]}")
+    end
+  end
+end
diff --git a/src/_layouts/default.erb b/src/_layouts/default.erb
index f0a8692..53596d5 100644
--- a/src/_layouts/default.erb
+++ b/src/_layouts/default.erb
@@ -7,6 +7,7 @@
     <%= render Shared::Navbar.new(metadata: site.metadata, resource: resource) %>
 
     <main>
+      <span>Absolute URL: <%= resource.absolute_url %></span>
       <%= yield %>
     </main>