The Witcher 3 keeps its Windows saves in one clear Documents directory, making a full-folder backup simple and preferable to selecting individual files. The folder can include many autosaves, checkpoints, manual saves, and preview images, so copying the entire directory preserves history. Modern releases also have cloud and cross-save features; those are useful for migration but they introduce conflict behavior, so a manual offline copy remains the best safety net before testing mods or tools.
Known The Witcher 3: Wild Hunt save-file structure
The researched filename or folder pattern is *.sav
*.png. File-extension context: .sav, .png The documented format notes are: The gamesaves directory contains .sav records and associated .png preview images. The save payload and screenshot are separate files.
Why an extension is not enough
A save filename can identify a likely container, but it does not prove the internal schema, game version, checksum rules, encryption state, or editability. Cross-save is a supported service feature, but a manual PC file copy should still be treated separately from account-backed cross-progression. SaveEditor therefore separates file identification from Tool compatibility and only labels a game-specific Tool Verified when its exact profile/version evidence passes the runtime gate.
Where the format is stored
PC save locations: Windows: %USERPROFILE%DocumentsThe Witcher 3gamesaves | Linux / Steam Play: Steam Play: <SteamLibrary-folder>/steamapps/compatdata/292030/pfx/. Storefront context: Steam, GOG Galaxy, Epic Games Launcher, EA app. The local Documents path is shared across common Windows storefronts. REDlauncher can also participate in cross-progression services. This matters because two releases can use different containers or companion files even when the visible slot name is similar.
Back up before inspecting or editing
Copy the entire gamesaves directory so manual, automatic, checkpoint, and preview files remain together. A read-only viewer is lower risk than a writer, but the live save should still be copied first. Cloud context also matters: Steam, GOG, Epic, and EA cloud support are documented. The current game also supports cross-save with console versions through the supported account workflow. Keep the original bytes available so any experiment can be reversed without relying on a cloud service or automatic backup.
What this reference does not claim
This page does not infer an undocumented checksum algorithm, encryption key, compression layer, or cross-store conversion from the file extension. Troubleshooting evidence: If a restore seems to vanish, compare local and cloud timestamps and check whether the launcher synchronized a newer remote copy. Keep the backup outside the live Documents folder while testing. Those questions require a verified parser/profile or a game-specific source, not a generic format guess.
Verification context: Windows/Steam Play save paths, .sav/.png files, storefront cloud support, and cross-save note were reviewed against current PCGamingWiki coverage.