diff --git a/.haml-lint_todo.yml b/.haml-lint_todo.yml
index 64f5c0cc7..69937c4c4 100644
--- a/.haml-lint_todo.yml
+++ b/.haml-lint_todo.yml
@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `haml-lint --auto-gen-config`
-# on 2023-09-28 10:42:25 -0400 using Haml-Lint version 0.50.0.
+# on 2023-10-03 08:32:28 -0400 using Haml-Lint version 0.51.0.
 # The point is for the user to remove these configuration records
 # one by one as the lints are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -15,7 +15,7 @@ linters:
   UnnecessaryStringOutput:
     enabled: false
 
-  # Offense count: 59
+  # Offense count: 44
   RuboCop:
     enabled: false
 
diff --git a/app/helpers/admin/announcements_helper.rb b/app/helpers/admin/announcements_helper.rb
new file mode 100644
index 000000000..97abe8e01
--- /dev/null
+++ b/app/helpers/admin/announcements_helper.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module Admin::AnnouncementsHelper
+  def datetime_pattern
+    '[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}(:[0-9]{2}){1,2}'
+  end
+
+  def datetime_placeholder
+    Time.zone.now.strftime('%FT%R')
+  end
+end
diff --git a/app/views/admin/accounts/show.html.haml b/app/views/admin/accounts/show.html.haml
index 44867d0a2..7801ef191 100644
--- a/app/views/admin/accounts/show.html.haml
+++ b/app/views/admin/accounts/show.html.haml
@@ -72,7 +72,7 @@
       .dashboard__counters__label= t 'admin.accounts.login_status'
 
 - if @account.local? && @account.user.nil?
-  = link_to t('admin.accounts.unblock_email'), unblock_email_admin_account_path(@account.id), method: :post, class: 'button' if can?(:unblock_email, @account) && CanonicalEmailBlock.where(reference_account_id: @account.id).exists?
+  = link_to t('admin.accounts.unblock_email'), unblock_email_admin_account_path(@account.id), method: :post, class: 'button' if can?(:unblock_email, @account) && CanonicalEmailBlock.exists?(reference_account_id: @account.id)
 - else
   .table-wrapper
     %table.table.inline-table
diff --git a/app/views/admin/announcements/edit.html.haml b/app/views/admin/announcements/edit.html.haml
index df1ac455f..150d98272 100644
--- a/app/views/admin/announcements/edit.html.haml
+++ b/app/views/admin/announcements/edit.html.haml
@@ -5,8 +5,8 @@
   = render 'shared/error_messages', object: @announcement
 
   .fields-group
-    = f.input :starts_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: '[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}(:[0-9]{2}){1,2}', placeholder: Time.now.strftime('%FT%R') }
-    = f.input :ends_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: '[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}(:[0-9]{2}){1,2}', placeholder: Time.now.strftime('%FT%R') }
+    = f.input :starts_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: datetime_pattern, placeholder: datetime_placeholder }
+    = f.input :ends_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: datetime_pattern, placeholder: datetime_placeholder }
 
   .fields-group
     = f.input :all_day, as: :boolean, wrapper: :with_label
@@ -16,7 +16,7 @@
 
   - unless @announcement.published?
     .fields-group
-      = f.input :scheduled_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: '[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}(:[0-9]{2}){1,2}', placeholder: Time.now.strftime('%FT%R') }
+      = f.input :scheduled_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: datetime_pattern, placeholder: datetime_placeholder }
 
   .actions
     = f.button :button, t('generic.save_changes'), type: :submit
diff --git a/app/views/admin/announcements/new.html.haml b/app/views/admin/announcements/new.html.haml
index cb39672e1..0123632ff 100644
--- a/app/views/admin/announcements/new.html.haml
+++ b/app/views/admin/announcements/new.html.haml
@@ -5,8 +5,8 @@
   = render 'shared/error_messages', object: @announcement
 
   .fields-group
-    = f.input :starts_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: '[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}(:[0-9]{2}){1,2}', placeholder: Time.now.strftime('%FT%R') }
-    = f.input :ends_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: '[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}(:[0-9]{2}){1,2}', placeholder: Time.now.strftime('%FT%R') }
+    = f.input :starts_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: datetime_pattern, placeholder: datetime_placeholder }
+    = f.input :ends_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: datetime_pattern, placeholder: datetime_placeholder }
 
   .fields-group
     = f.input :all_day, as: :boolean, wrapper: :with_label
@@ -15,7 +15,7 @@
     = f.input :text, wrapper: :with_block_label
 
   .fields-group
-    = f.input :scheduled_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: '[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}(:[0-9]{2}){1,2}', placeholder: Time.now.strftime('%FT%R') }
+    = f.input :scheduled_at, include_blank: true, wrapper: :with_block_label, html5: true, input_html: { pattern: datetime_pattern, placeholder: datetime_placeholder }
 
   .actions
     = f.button :button, t('.create'), type: :submit
diff --git a/app/views/admin/reports/actions/preview.html.haml b/app/views/admin/reports/actions/preview.html.haml
index eb67eebe0..8634bb215 100644
--- a/app/views/admin/reports/actions/preview.html.haml
+++ b/app/views/admin/reports/actions/preview.html.haml
@@ -61,7 +61,7 @@
                       = fa_icon 'link'
                       = media_attachment.file_file_name
                 .strike-card__statuses-list__item__meta
-                  = link_to ActivityPub::TagManager.instance.url_for(status), target: '_blank' do
+                  = link_to ActivityPub::TagManager.instance.url_for(status), target: '_blank', rel: 'noopener noreferrer' do
                     %time.formatted{ datetime: status.created_at.iso8601, title: l(status.created_at) }= l(status.created_at)
                   - unless status.application.nil?
                     ·
diff --git a/app/views/admin/statuses/show.html.haml b/app/views/admin/statuses/show.html.haml
index e070e5872..5fda50a94 100644
--- a/app/views/admin/statuses/show.html.haml
+++ b/app/views/admin/statuses/show.html.haml
@@ -2,7 +2,7 @@
   = t('statuses.title', name: display_name(@account), quote: truncate(@status.spoiler_text.presence || @status.text, length: 50, omission: '…', escape: false))
 
 - content_for :heading_actions do
-  = link_to t('admin.statuses.open'), ActivityPub::TagManager.instance.url_for(@status), class: 'button', target: '_blank'
+  = link_to t('admin.statuses.open'), ActivityPub::TagManager.instance.url_for(@status), class: 'button', target: '_blank', rel: 'noopener noreferrer'
 
 %h3= t('admin.statuses.metadata')
 
diff --git a/app/views/admin/tags/show.html.haml b/app/views/admin/tags/show.html.haml
index 71bce0c0c..0878887ce 100644
--- a/app/views/admin/tags/show.html.haml
+++ b/app/views/admin/tags/show.html.haml
@@ -9,7 +9,7 @@
 
   .dashboard
     .dashboard__item
-      = react_admin_component :counter, measure: 'tag_accounts', start_at: @time_period.first, end_at: @time_period.last, params: { id: @tag.id }, label: t('admin.trends.tags.dashboard.tag_accounts_measure'), href: tag_url(@tag), target: '_blank'
+      = react_admin_component :counter, measure: 'tag_accounts', start_at: @time_period.first, end_at: @time_period.last, params: { id: @tag.id }, label: t('admin.trends.tags.dashboard.tag_accounts_measure'), href: tag_url(@tag), target: '_blank', rel: 'noopener noreferrer'
     .dashboard__item
       = react_admin_component :counter, measure: 'tag_uses', start_at: @time_period.first, end_at: @time_period.last, params: { id: @tag.id }, label: t('admin.trends.tags.dashboard.tag_uses_measure')
     .dashboard__item
diff --git a/app/views/auth/registrations/new.html.haml b/app/views/auth/registrations/new.html.haml
index f473a993b..c001b66c2 100644
--- a/app/views/auth/registrations/new.html.haml
+++ b/app/views/auth/registrations/new.html.haml
@@ -26,7 +26,7 @@
     = f.input :confirm_password, as: :string, placeholder: t('simple_form.labels.defaults.honeypot', label: t('simple_form.labels.defaults.password')), required: false, input_html: { 'aria-label': t('simple_form.labels.defaults.honeypot', label: t('simple_form.labels.defaults.password')), autocomplete: 'off' }, hint: false
     = f.input :website, as: :url, wrapper: :with_label, label: t('simple_form.labels.defaults.honeypot', label: 'Website'), required: false, input_html: { 'aria-label': t('simple_form.labels.defaults.honeypot', label: 'Website'), autocomplete: 'off' }
 
-  - if approved_registrations? && !@invite.present?
+  - if approved_registrations? && @invite.blank?
     %p.lead= t('auth.sign_up.manual_review', domain: site_hostname)
 
     .fields-group
diff --git a/app/views/disputes/strikes/show.html.haml b/app/views/disputes/strikes/show.html.haml
index ce52e470d..de883bd87 100644
--- a/app/views/disputes/strikes/show.html.haml
+++ b/app/views/disputes/strikes/show.html.haml
@@ -25,7 +25,7 @@
       - unless @strike.none_action?
         %p= t "user_mailer.warning.explanation.#{@strike.action}", instance: Rails.configuration.x.local_domain
 
-      - unless @strike.text.blank?
+      - if @strike.text.present?
         = linkify(@strike.text)
 
       - if @strike.report && !@strike.report.other?
@@ -57,7 +57,7 @@
                       = fa_icon 'link'
                       = media_attachment.file_file_name
                 .strike-card__statuses-list__item__meta
-                  = link_to ActivityPub::TagManager.instance.url_for(status), target: '_blank' do
+                  = link_to ActivityPub::TagManager.instance.url_for(status), target: '_blank', rel: 'noopener noreferrer' do
                     %time.formatted{ datetime: status.created_at.iso8601, title: l(status.created_at) }= l(status.created_at)
                   - unless status.application.nil?
                     ·
diff --git a/app/views/statuses/_detailed_status.html.haml b/app/views/statuses/_detailed_status.html.haml
index 70cfbd6b8..9e171ff59 100644
--- a/app/views/statuses/_detailed_status.html.haml
+++ b/app/views/statuses/_detailed_status.html.haml
@@ -77,4 +77,4 @@
 
     - if user_signed_in?
       ·
-      = link_to t('statuses.open_in_web'), web_url("@#{status.account.pretty_acct}/#{status.id}"), class: 'detailed-status__application', target: '_blank'
+      = link_to t('statuses.open_in_web'), web_url("@#{status.account.pretty_acct}/#{status.id}"), class: 'detailed-status__application', target: '_blank', rel: 'noopener noreferrer'
diff --git a/app/views/user_mailer/warning.html.haml b/app/views/user_mailer/warning.html.haml
index 8a878bead..5d64e8324 100644
--- a/app/views/user_mailer/warning.html.haml
+++ b/app/views/user_mailer/warning.html.haml
@@ -39,7 +39,7 @@
                               - unless @warning.none_action?
                                 %p= t "user_mailer.warning.explanation.#{@warning.action}", instance: @instance
 
-                              - unless @warning.text.blank?
+                              - if @warning.text.present?
                                 = linkify(@warning.text)
 
                               - if @warning.report && !@warning.report.other?
@@ -68,7 +68,7 @@
           %table.content-section{ cellspacing: 0, cellpadding: 0 }
             %tbody
               %tr
-                %td.content-cell{ class: @statuses.nil? || @statuses.empty? ? '' : 'content-start' }
+                %td.content-cell{ class: @statuses.blank? ? '' : 'content-start' }
                   %table.column{ cellspacing: 0, cellpadding: 0 }
                     %tbody
                       %tr