diff --git a/lib/wicked_pdf.rb b/lib/wicked_pdf.rb
index cee40f31..4f164d25 100644
--- a/lib/wicked_pdf.rb
+++ b/lib/wicked_pdf.rb
@@ -46,7 +46,8 @@ def pdf_from_string(string, options = {})
     string_file.write(string)
     string_file.close
 
-    pdf = pdf_from_html_file(string_file.path, options)
+    action = options[:skip_file_prefix] ? 'pdf_from_url' : 'pdf_from_html_file'
+    pdf = send(action, string_file.path, options)
     pdf
   ensure
     string_file.close! if string_file
diff --git a/lib/wicked_pdf/pdf_helper.rb b/lib/wicked_pdf/pdf_helper.rb
index 0b97f411..eb7184f4 100644
--- a/lib/wicked_pdf/pdf_helper.rb
+++ b/lib/wicked_pdf/pdf_helper.rb
@@ -122,7 +122,7 @@ def prerender_header_and_footer(options)
       [:header, :footer].each do |hf|
         next unless options[hf] && options[hf][:html] && options[hf][:html][:template]
         @hf_tempfiles = [] unless defined?(@hf_tempfiles)
-        @hf_tempfiles.push(tf = WickedPdfTempfile.new("wicked_#{hf}_pdf.html"))
+        @hf_tempfiles.push(tf = WickedPdfTempfile.new("wicked_#{hf}_pdf.html", options[:temp_path]))
         options[hf][:html][:layout] ||= options[:layout]
         render_opts = {
           :template => options[hf][:html][:template],
@@ -135,7 +135,7 @@ def prerender_header_and_footer(options)
         render_opts[:file] = options[hf][:html][:file] if options[:file]
         tf.write render_to_string(render_opts)
         tf.flush
-        options[hf][:html][:url] = "file:///#{tf.path}"
+        options[hf][:html][:url] = options[:skip_file_prefix] ? tf.path : "file:///#{tf.path}"
       end
       options
     end