Adapted from Brett Terpstra https://gist.github.com/raw/899757/47eef9c26f3027277adb93b30c0e70ec83796b37/gistfile1.rb

convertpinboard.rb

#!/usr/bin/ruby

%w[fileutils ftools set zlib].each do |filename|
  require filename
end

# Load the Marshal dump to a hash
def load file_name
  begin
    file = Zlib::GzipReader.open(file_name)
  rescue Zlib::GzipFile::Error
    file = File.open(file_name, 'r')
  ensure
    obj = Marshal.load file.read
    file.close
    return obj
  end
end

HOME_DIR = ENV['HOME']
DB_LOCATION = "#{HOME_DIR}/Dropbox/appsupport/Bookmark"

obj = load(DB_LOCATION + "/bookmarks.stash")

tag = ''

bookmarks = []
obj.each {|bookmark|
  if bookmark['tag'] =~ /\b#{tag}\b/i
    bookmarks << {
      'title' => bookmark['description'],
      'url' => bookmark['href']
    }
  end unless bookmark['tag'].nil?  
}

puts "<!DOCTYPE NETSCAPE-Bookmark-file-1><!-- This is an automatically generated file.     It will be read and overwritten.     DO NOT EDIT! -->  <TITLE>Bookmarks</TITLE> <H1>Bookmarks</H1>"
puts "<DL><p>"
bookmarks.each{|bookmark|
  puts %Q{<DT><A HREF="#{bookmark['url']}">#{bookmark['title']}</A>}
}
puts "</DL><p>"

# wanted_keys = %w[presentation]
# p bookmarks.reject { |bookmark| !wanted_keys.include? bookmark['tag'] }