This is a third party plugin of FFXIV plugin framework Dalamud, it can turn map coordinates literal into interactable map link when you post in-game chat messages.
Demo
Add https://asvel.github.io/ffxiv-literal-map-link/ to the Custom Plugin Repositories list in Dalamud Settings, and install "Literal Map Link" from Plugin Installer.
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Source code of this project is released under the same license as the Dalamud main project.