adjust meta tags

app/views/layouts/_head_tags.html.erb

@@ -1,4 +1,4 @@
 <title>
-  DocuSeal | Open Source Document Filling and Signing
+  <%= content_for(:html_title) || 'DocuSeal | Open Source Document Signing' %>
 </title>
 <%= render 'shared/meta' %>

app/views/shared/_meta.html.erb

@@ -1,21 +1,25 @@
 <% if Docuseal.demo? || (request.path != '/' && !devise_controller?) %>
   <meta name="robots" content="noindex">
 <% end %>
-<meta name="description" content="Open source, self-hosted tool to streamline document filling and signing. Create custom PDF forms to complete and sign with an easy to use online tool.">
+<% title = content_for(:html_title) || 'DocuSeal | Open Source Document Filling and Signing' %>
-<meta property="og:title" content="DocuSeal | Open Source Document Filling and Signing">
+<% description = content_for(:html_description) || 'Open source, self-hosted tool to streamline document filling and signing. Create custom PDF forms to complete and sign with an easy to use online tool.' %>
-<meta property="og:description" content="Open source, self-hosted tool to streamline document filling and signing. Create custom PDF forms to complete and sign with an easy to use online tool.">
+<meta name="description" content="<%= description %>">
+<meta property="og:title" content="<%= title %>">
+<meta property="og:description" content="<%= description %>">
 <meta property="og:type" content="website">
 <meta property="og:url" content="<%= root_url %>">
 <meta property="og:site_name" content="DocuSeal">
+<% unless content_for(:disable_image_preview) %>
   <meta property="og:image" content="<%= image_pack_url('images/preview.png') %>">
   <meta property="og:image:width" content="800">
   <meta property="og:image:height" content="800">
   <meta name="twitter:image" content="<%= image_pack_url('images/preview.png') %>">
+<% end %>
 <meta name="twitter:card" content="summary">
 <meta name="twitter:creator" content="@docusealco">
 <meta name="twitter:site" content="@docusealco">
-<meta name="twitter:title" content="DocuSeal | Open Source Document Filling and Signing">
+<meta name="twitter:title" content="<%= title %>">
-<meta name="twitter:description" content="Open source, self-hosted tool to streamline document filling and signing. Create custom PDF forms to complete and sign with an easy to use online tool.">
+<meta name="twitter:description" content="<%= description %>">
 <link rel="apple-touch-icon" sizes="180x180" href="/apple-icon-180x180.png">
 <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
 <link rel="icon" type="image/png" sizes="96x96" href="/favicon-96x96.png">

app/views/start_form/show.html.erb

@@ -1,3 +1,5 @@
+<% content_for(:html_title, "#{@template.name} | DocuSeal") %>
+<% content_for(:html_description, "#{@template.account.name} has invited you to fill and sign documents online effortlessly with a secure, fast, and user-friendly digital document signing solution.") %>
 <div class="max-w-md mx-auto px-2 mt-12 mb-4">
   <div class="space-y-6 mx-auto">
     <div class="space-y-6">

app/views/submissions/show.html.erb

@@ -1,3 +1,6 @@
+<% if params[:controller] == 'submissions_preview' %>
+  <%= render 'submissions/preview_tags' %>
+<% end %>
 <div style="max-width: 1600px" class="mx-auto pl-4">
   <div class="flex justify-between py-1.5 items-center pr-4 sticky top-0 md:relative z-10 bg-base-100">
     <a href="<%= signed_in? && @submission.account_id == current_account&.id ? template_path(@submission.template) : '/' %>" class="flex items-center space-x-3 py-1">

app/views/submissions_preview/completed.html.erb

@@ -1,3 +1,4 @@
+<%= render 'submissions/preview_tags' %>
 <div class="max-w-md mx-auto px-2 mt-12 mb-4">
   <div class="space-y-6 mx-auto">
     <div class="space-y-6">

app/views/submit_form/show.html.erb

@@ -1,3 +1,5 @@
+<% content_for(:html_title, "#{@submitter.submission.template.name} | DocuSeal") %>
+<% content_for(:html_description, "#{@submitter.account.name} has invited you to fill and sign documents online effortlessly with a secure, fast, and user-friendly digital document signing solution.") %>
 <% fields_index = Templates.build_field_areas_index(@submitter.submission.template_fields || @submitter.submission.template.fields) %>
 <% values = @submitter.submission.submitters.reduce({}) { |acc, sub| acc.merge(sub.values) } %>
 <% attachments_index = ActiveStorage::Attachment.where(record: @submitter.submission.submitters, name: :attachments).preload(:blob).index_by(&:uuid) %>