Refactor page titles and subtitles for consistency and clarity across various PDF conversion tools

src/pages/sign-pdf.html

@@ -123,12 +123,10 @@
           class="text-2xl font-bold text-white mb-2"
           data-i18n="tools:signPdf.name"
         >
-          Sign PDF Free Online - Add Digital Signature
+          Sign PDF
         </h1>
         <p class="text-gray-400 mb-6" data-i18n="tools:signPdf.subtitle">
-          Upload a PDF to sign it using the built-in PDF.js viewer. Look for the
-          <strong>signature / pen tool</strong> in the toolbar to add your
-          signature.
+          Draw, type, or upload your signature.
         </p>
 
         <!-- Drop Zone -->