WoWHead GC Exporter by Tvat is a Chrome extension that allows users to export item data from WoWHead Classic into the Gear Comparison sheet for WoW Classic. This extension is especially useful for players who want to compare different gear options in order to optimize their character's stats.

The Gear Comparison sheet is a powerful tool that enables players to compare items in the context of increasing specific stats. For example, it can be used to determine which resistance gear is better by calculating the amount of stats that will be lost and the amount of resistance that will be gained for each item. The sheet then scores all the items and presents the most effective options.

To use WoWHead GC Exporter, users need to make their own copy of the Gear Comparison sheet by selecting "File" and then "Make a copy." Once the sheet is copied, users can import item data from WoWHead Classic to start comparing different gear options.

Overall, WoWHead GC Exporter by Tvat is a valuable tool for WoW Classic players who want to optimize their character's gear and maximize their stats.