Dark Souls III is a profile-container game: DS30000.sl2 can hold multiple characters, so copying it is not the same as exporting one slot. Manual backups remain especially important because players should not treat launcher sync as a guaranteed recovery system. Archive the full account-ID directory at important milestones. If you later experiment with a character manager or editor, keep the untouched original separate from every generated copy.
Prepare the source PC
On the source system, identify the actual Dark Souls III save root: Windows: %APPDATA%DarkSoulsIII<user-id> | Linux / Steam Play: Steam Play: <SteamLibrary-folder>/steamapps/compatdata/374320/pfx/. The expected file/folder pattern is DS30000.sl2. Close the game, let the active launcher finish writing and synchronizing, then make a complete offline copy rather than transferring a file that may still be open.
Preserve storefront and profile identity
Documented storefronts: Steam. The account-ID directory is part of the profile. The save location is separate from the game installation directory. A transfer between two PCs is simplest when both systems use the same storefront/account/profile context. If the destination uses a different store or container, treat that as a migration problem rather than an ordinary restore.
Move the complete save boundary
Copy DS30000.sl2, preferably by archiving the full account-ID folder, before major progression, mods, or migration. Put the copied data on the destination only after confirming the destination save path. If the game creates a new empty save first, keep that new folder as another backup so you can compare structures and revert.
Handle cloud sync deliberately
Do not rely on Steam Cloud as the only backup for Dark Souls III; current community reports continue to emphasize local manual backups. Decide whether the local transferred copy or cloud copy should be authoritative before launching the game. If possible, preserve both. After the transferred save loads correctly, make a fresh in-game save and let the launcher synchronize normally.
Check compatibility before blaming the transfer
The standard PC profile uses one DS30000.sl2 container under the account-ID folder. Multiple characters are stored inside that container rather than as separate files. Compatibility note: Replacing DS30000.sl2 replaces the profile container containing multiple character slots. Character-level import/export is a separate game-specific operation. If the destination does not see the transferred progress, If a migrated file is ignored, restore the original and confirm the account folder and game version before attempting identity edits or third-party conversions. Verify game edition/version, store, profile IDs, redirected folders, and mod/DLC dependencies before editing the save itself.
Verification context: The AppData account-folder location was reviewed against current PCGamingWiki coverage. DS30000.sl2 naming and the practical lack of dependable Steam Cloud backup are corroborated by long-running PC community documentation.