Most of that 40kB is eaten up by three icons. The actual code is 13 lines long: https://github.com/ChrisAntaki/visited-links-firefox/blob/master/lib/main.js ht

Most of that 40kB is eaten up by three icons. The actual code is 13 lines long: https://github.com/ChrisAntaki/visited-links-firefox/blob/master/lib/main.js https://github.com/ChrisAntaki/visited-links-firefox/blob/ma... (plus a 14 line manifest file, 12 lines of test boilerplate and a 10 line readme)