MiniMap by Fyrakin is most accurate and highly FPS efficient add-on available. It is the first MiniMap add-on for ESO with a true wheel mode . Now it also features anticipated feature – border pins (first seen in Deathangel’s RMM).
Feature list of the latest version: True Wheel or Rectangle mode, Resizable to any rectangular shape, North facing or Rotating mode. Can lock/unlock position and size. Keybinds to toggle View and zooms. Can zoom with a scroll button. Separate zoom levels for each map. Chat commands to reset default settings, hide/unhide minimap, player location and fps test. Can set performance settings for all data refresh rates. All pins supported. There are many more options and settings. There are also some mapping features for add-on developpers and some planned to be added later.
To set up MiniMap key bindings for Zoom and Toggle go to Controls -> Keybindings and scroll down until you find MiniMap by Fyrakin.
Extract the MiniMap folder from the .zip into your ESO AddOns folder