Keep the untouched source outside the live game/emulator save directory.
Structured text & data / Format hub
JSON Save Files tools & compatibility
JSON-based save and configuration files. A .json extension does not prove a specific game schema; use only a Tool whose support notes match the file.
01 / Format context
Confirm the container and the profile.
SaveEditor separates wrapper recognition from semantic compatibility. Before processing a file, confirm the game or emulator, platform, version, expected size, and integrity rules described by the Tool itself.
Choose only a Tool whose support notes name the same format/profile.
File-size, encryption, signing, account, and browser-local limits still apply.
02 / Active tools
JSON Save Files tools with explicit support state
Planned and deprecated Tool records are excluded. Phase 43 cannot make an existing Tool verified or operational.
Verified
Save Editors
Vampire Survivors Save Editor
Edit coins, run coins, and lifetime coins in the explicitly legacy 2022 SaveData.sav JSON family and recompute its SHA-256 checksum locally.
Verified
RPG Maker Tools
RPG Maker MZ Save Editor
Edit common fields in standard RPG Maker MZ .rmmzsave files locally, with zlib decoding and re-encoding that follows the engine StorageManager format.
Verified
RPG Maker Tools
RPG Maker MV Save Editor
Edit common fields in standard RPG Maker MV .rpgsave files locally using the engine-compatible LZ-String Base64 save codec.
Verified
File Analysis
JSON Editor
Validate, inspect, format, and minify JSON text locally while reporting bounded structural statistics.
Verified
File Analysis
JSON Formatter
Pretty-format or minify valid JSON locally with explicit syntax validation and structure statistics.