10
Found an extension today that can rot13 any text.
(addons.mozilla.org)
A community for discussion about Mozilla Firefox.
I like it. People often use ROT-13 for spoilers, it's nice to convert back and forth with a few clicks. Simple and to the point.
V yvxr vg. Crbcyr bsgra hfr EBG-13 sbe fcbvyref, vg'f avpr gb pbaireg onpx naq sbegu jvgu n srj pyvpxf. Fvzcyr naq gb gur cbvag.