This is the primary character file. It stores your level, stats, skills, and inventory.
If you can’t find the folder, search your PC for files ending in .d2s , which is the primary extension for character data. 2. Understanding File Extensions
General overviews of save file behavior and common troubleshooting for corrupted saves can be found on the Diablo Wiki.
Sometimes a crash corrupts the file size bit.
Header and metadata
📘 Inventory items are stored as raw item codes with attribute lists (a complex nested structure).