diff --git a/analyze.rb b/analyze.rb
new file mode 100644
index 0000000..bb9a17d
--- /dev/null
+++ b/analyze.rb
@@ -0,0 +1,82 @@
+require "pathname"
+require "set"
+require "json"
+
+def resolve_path(bp, p)
+  path = nil
+  if bp.start_with? "."
+    path = Pathname.new(File.join(bp, p)).cleanpath.to_s
+  elsif p.start_with? "blog/"
+    path = File.join("content", p)
+  else
+    path = File.join("content", "blog", p)
+  end
+  if File.directory? path
+    path = File.join(path, "index.md") 
+  elsif !path.end_with? ".md"
+    path += ".md"
+  end
+  path.gsub("blog/blog/", "blog/")
+end
+
+files = Set.new
+refs = {}
+ARGF.each do |file|
+  file = file.chomp
+  files << file
+  arr = refs[file] || (refs[file] = [])
+  File.open(file).read.scan(/< relref "([^"]+)" >/) do |ref|
+    ref = resolve_path(File.dirname(file), ref[0])
+    arr << ref
+    files << ref
+  end
+  arr.uniq!
+end
+
+data = {}
+id = 0
+files.each do |file|
+  id += 1
+  name = file
+  tags = []
+  group = 1
+  value = File.size(file)
+  url = file.gsub(/^content/, "https://danilafe.com").delete_suffix("/index.md").delete_suffix(".md")
+  File.readlines(file).each do |l|
+    if l =~ /^title: (.+)$/
+      name = $~[1].delete_prefix('"').delete_suffix('"')
+    elsif l =~ /^tags: (.+)$/
+      tags = $~[1].delete_prefix("[").delete_suffix("]").split(/,\s?/).map { |it| it.gsub('"', '') }
+      if tags.include? "Compilers"
+        group = 2
+      elsif tags.include? "Coq"
+        group = 3
+      elsif tags.include? "Programming Languages"
+        group = 4
+      elsif tags.include? "Haskell"
+        group = 5
+      elsif tags.include? "Crystal"
+        group = 6
+      end
+    end
+  end
+  data[file] = { :id => id, :label => name, :group => group, :tags => tags, :url => url, :value => value }
+end
+
+edges = []
+files.each do |file1|
+  # files.each do |file2|
+  #   next if file1 == file2
+  #   next unless data[file1][:tags].any? { |t| data[file2][:tags].include? t }
+  #   edges << { :from => data[file1][:id], :to => data[file2][:id] }
+  # end
+  next unless frefs = refs[file1]
+  frefs.each do |ref|
+    edges << { :from => data[file1][:id], :to => data[ref][:id] }
+  end
+end
+edges.uniq
+# edges.filter! { |e| e[:from] < e[:to] }
+
+puts ("const nodes = " + JSON.pretty_unparse(data.values) + ";")
+puts ("const edges = " + JSON.pretty_unparse(edges) + ";")