Guides
Answer-first explainers of how ForeverDiff reads the World of Warcraft client and how to read what it publishes. These describe our own method and findings; each links to the methodology for the underlying evidence.
How to read a ForeverDiff diff
How to read a ForeverDiff page: the build strip, added/changed/removed states, verbatim values, and why we publish records instead of grades.
updated Sep 16, 2026
What a World of Warcraft build number means
What a WoW build number like 1.15.9.69722 means: the version versus the build id, why the build id matters, and exactly what ForeverDiff records for each build.
updated Sep 16, 2026
How WoW datamining works, and what the game client does not contain
How World of Warcraft datamining works: DB2 tables in the CASC content system on Blizzard's CDN, community column definitions, and the data the Classic client does not contain.
updated Sep 16, 2026