diff --git a/bin/migrate.rb b/bin/migrate.rb
deleted file mode 100755
index 968b3b0..0000000
--- a/bin/migrate.rb
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/usr/bin/env ruby
-
-require 'pg'
-
-connection = PG.connect(user: 'caraus', dbname: 'caraus_blog')
-query = <<~SQL
-SELECT articles.*, categories.name
-FROM articles
-INNER JOIN categories on categories.id = articles.category_id
-SQL
-connection.exec query do |result|
-  result.each do |row|
-    post_contents = <<~POST
-      ---
-      layout: post
-    POST
-
-    date = row['created_at'].gsub /\.[[:digit:]]+$/, ''
-    post_contents << "date: #{date}\n"
-    if row['name'] == 'Über Technik und Philosophie'
-      category =  'Aufsatz'
-    else
-      category = row['name']
-    end
-    post_contents << "tags: #{category}\n"
-
-    if row['title'].include? '"'
-      post_contents << "title: |\n  #{row['title']}\n"
-    else
-      post_contents << "title: #{row['title']}\n"
-    end
-
-    post_contents << "teaser:\n  #{row['teaser']}\n" unless row['teaser'].nil?
-    post_contents << "---\n"
-    post_contents << "#{row['description'].delete("\r")}\n"
-
-    post_path = (Pathname.new('themes/posts') + row['slug']).sub_ext('.html')
-
-    post_path.dirname.mkpath
-    post_path.write post_contents
-  end
-end
diff --git a/bin/split.rb b/bin/split.rb
deleted file mode 100755
index b5dbf94..0000000
--- a/bin/split.rb
+++ /dev/null
@@ -1,229 +0,0 @@
-#!/usr/bin/env ruby
-
-require 'open3'
-
-OUTPUT_FILE = 'var/tmp.txt'
-
-def handle_line(line, output)
-  if line.length < 120 || line.start_with?("\t")
-    output << line
-  else
-    in_tag = false
-    last_whitespace = 0
-
-    for line_position in 0...line.length
-      current_character = line[line_position]
-
-      if line_position == line.length.pred
-        output << line
-      elsif current_character == ' ' && !in_tag
-        if line_position > 80 && last_whitespace > 0
-          output << line[0...line_position]
-          handle_line line[line_position.succ..], output
-          return
-        else
-          last_whitespace = line_position
-        end
-      else
-        case current_character
-        when '<'
-          in_tag = true
-        when '>'
-          in_tag = false
-        end
-      end
-    end
-  end
-end
-
-def split(source)
-  output_lines = []
-
-  source.each_line do |line|
-    handle_line line.chomp, output_lines
-  end
-
-  output_lines.join "\n"
-end
-
-def diff(source, transformed_text)
-  File.write(OUTPUT_FILE, transformed_text.gsub(' ', "\n") + "\n")
-
-  Open3.popen2 'diff', '-Nur', OUTPUT_FILE, '-' do |stdin, stdout, wait_thr|
-    stdin.puts source.gsub(' ', "\n")
-    stdin.close
-
-    print stdout.read
-
-    wait_thr.value
-  end
-  transformed_text
-end
-
-def head(source)
-  source.lines.map do |line|
-    next line unless line.start_with?('<h') && line.end_with?(">\n")
-
-    header_text = line[4...-6].gsub /^\d\. /, ''
-    header_level = line[2].to_i
-
-    case header_level
-    when 2
-      "\\section{#{header_text}}\n"
-    when 3
-      "\\subsection{#{header_text}}\n"
-    when 4
-      "\\subsubsection{#{header_text}}\n"
-    else
-      line
-    end
-  end.join
-end
-
-def references(source)
-  references_start = '<ol class="footnote">'
-  references_index = source.index(references_start)
-  return source if references_index.nil?
-
-  replaced = source[0...references_index]
-  references_text = source[references_index + references_start.length + 1...-('</ol>'.length + 1)]
-
-  references_text.each_line do |line|
-    reference_id, reference_text = line.strip.delete_prefix('<li id="').delete_suffix('</li>').split('">')
-    puts "#{reference_id}: #{reference_text}"
-
-    reference_match = source.match(/<sup><a href="##{reference_id}">(\d+)<\/a><\/sup>/)
-    if reference_match
-      answer = STDIN.gets
-
-      if answer.nil?
-        File.write OUTPUT_FILE, replaced
-        return replaced
-      else
-        reference_name, page = answer.chomp.split(' ', 2)
-
-        see = '[Vgl.]' if reference_text.start_with? 'Vgl.'
-        replaced.sub!(reference_match[0], "\\footcite#{see}[#{page}]{#{reference_name}}")
-      end
-    else
-      puts 'No match!'
-    end
-  end
-
-  File.write OUTPUT_FILE, replaced
-  replaced
-end
-
-def quotes(source)
-  paragraphs = source.split("\n\n")
-
-  paragraphs.each do |paragraph|
-    last_index = 0
-    quote_indices = []
-    quote_pair = []
-
-    while true
-      last_index = paragraph.index('"', last_index + 1)
-      if last_index.nil?
-        break
-      elsif quote_pair.empty?
-        quote_pair << last_index
-      else
-        quote_pair << last_index
-        quote_indices << quote_pair
-        quote_pair = []
-      end
-    end
-    if quote_pair.empty?
-      quote_indices.each do |first_quote, second_quote|
-        paragraph[first_quote] = '„'
-        paragraph[second_quote] = '“'
-      end
-    end
-  end
-
-  paragraphs.join("\n\n")
-end
-
-def print_out(source)
-  print source
-  source
-end
-
-def break_lines(source)
-  source.gsub('</p> <p', "</p>\n\n<p")
-    .sub(/\s+<ol class="footnote">/, %{\n\n<ol class="footnote">})
-    .sub('</ol>', "\n</ol>")
-    .gsub('<li id=', "\n\t<li id=")
-end
-
-class Arguments
-  attr_accessor :input
-
-  def initialize
-    @operations = Set.new
-  end
-
-  def read_arguments(arguments)
-    arguments.each do |argument|
-      handle_argument argument
-    end
-  end
-
-  def operations
-    @operations.to_a
-  end
-
-  private
-
-  def handle_argument(argument)
-    if argument.start_with? '--'
-      add_option argument
-    else
-      @operations << argument
-    end
-  end
-
-  def add_option(option)
-    name, value = option.delete_prefix('--').split '='
-
-    case name
-    when 'input'
-      @input = value
-    end
-  end
-end
-
-arguments = Arguments.new
-arguments.read_arguments ARGV
-
-raise 'No input file given with --input=file' if arguments.input.nil?
-
-operations = arguments.operations
-source = transformed_text = File.read arguments.input
-
-while operation = operations.shift do
-  case operation
-  when 'break'
-    # Add line breaks between paragraphs.
-    transformed_text = break_lines transformed_text
-  when 'split'
-    # Split long lines, so each line has 80-120 characters if possible.
-    transformed_text = split transformed_text
-  when 'diff'
-    transformed_text = diff source, transformed_text
-  when 'head'
-    # Replace HTML headers with LaTeX sections.
-    transformed_text = head transformed_text
-  when 'references'
-    transformed_text = references transformed_text
-  when 'quotes'
-    transformed_text = quotes transformed_text
-  when 'print'
-    transformed_text = print_out transformed_text
-  else
-    raise "Unknown operation #{operation}"
-  end
-end
-
-# puts transformed_text