Runs entirely in your browser

Free Online Save File Editor

A save file editor for RPG Maker, Unity and JSON-based games. Open your save file, edit the values through a labeled editor, download the result. Every tool parses and re-encodes the file on your machine; it is never sent anywhere.

Browse Editors How It Works

100% Client-Side
No Account Needed
Free, No Catch

Supported Editors

Pick the tool that matches your game's engine or save format.

.save / persistent

Live

Ren'Py Save Editor

Edit variables in Ren'Py visual novel saves and re-sign them with your own key, so the game loads them without the different-device warning.

.rpgsave / .rmmzsave

Live

RPG Maker Save Editor

Edit gold, party, items, switches and variables in RPG Maker MV and MZ saves, with real names from the game's own data.

.json / .sav / .dat

Live

JSON Save Editor

Edit any game save that's JSON underneath, even when it's base64, gzip or LZString-compressed.

.reg / .plist / .json

Live

Unity Save Editor

Edit PlayerPrefs exported from the Windows registry or a macOS plist, or a Unity game's JSON save.

base64 / JSON

Coming Soon

Idle / Incremental Save-Code Editor

Decode and edit the copy-paste save codes used by idle and incremental games.

Which Save File Editor Opens My File?

The file extension is a hint, not an answer. Here's what each common one usually means.

Extension	Usually from	Open it with
`.rpgsave`	RPG Maker MV. LZString-compressed JSON, usually in the game's `www/save` folder.	RPG Maker Save Editor
`.rmmzsave`	RPG Maker MZ. zlib-compressed JSON in the `save` folder, next to `global.rmmzsave`.	RPG Maker Save Editor
`.json`	Any engine that writes plain JSON: many Unity, Godot and HTML5 games.	JSON Save Editor
`-LT1.save` / `persistent`	Ren'Py visual novels. A zip holding the pickled game state, in `%APPDATA%\RenPy` or the game's `game/saves` folder.	Ren'Py editor
`.sav` / `.save` / `.dat`	Generic names. If the file is JSON underneath, even base64, gzip or LZString-wrapped, the JSON editor unwraps it. Raw binary formats need a dedicated tool.	JSON Save Editor
`.reg` / `.plist`	Unity PlayerPrefs, exported from the Windows registry or found in macOS `~/Library/Preferences`.	Unity Save Editor
`.es3`	Unity's Easy Save 3. Readable only when the developer left encryption off; AES-encrypted files can't be edited without the game's key.	Unity Save Editor

Not sure? Open the file in a plain text editor. Readable { and " characters mean JSON; a long run of letters and digits ending in = is usually base64. Both work with the JSON Save Editor. If it's unreadable binary, none of the current tools will open it yet.

How It Works

Three steps. Nothing leaves your device at any point.

Select your tool

Pick the editor that matches your game's engine or save format above.

Edit in your browser

Open your save file and change values through a labeled editor. No raw hex or JSON required.

Download and replace

Save the edited file and put it back in your game's save folder. Nothing was ever sent anywhere else.

Frequently Asked Questions

Everything about safety, privacy, and what's coming next.

Is SaveFileEditors actually free?

Yes. There's no signup, no paywall, and no premium tier for any editor on this site. It's supported by search traffic to each tool page, not by charging users.

How does the "nothing is uploaded" claim actually work?

Every tool reads your file with the browser's File API, decodes and edits it in memory using JavaScript running on your machine, then hands you the result back as a downloadable Blob. There is no upload endpoint on this site — a tool page has nothing to send your file to even if it wanted to.

Will editing my save file corrupt my game or get me banned?

Always keep a backup of the original file before editing — an out-of-range value can still cause an in-game error even though the file itself re-encodes correctly. Ban risk is essentially specific to games with server-side save validation or anti-cheat; a single-player, locally-saved game has no server to flag the change.

My game isn't listed. Can you add it?

The tool queue above is the current roadmap, roughly in build order. Use the Contact page to request a specific game or engine — dedicated pages for individual popular games are planned once the engine-level tools are live.

I have a .sav file. Will one of these tools open it?

Maybe — .sav is a generic extension a lot of different engines reuse for completely different underlying formats, so the extension alone doesn't tell you which tool applies. Check the tool list above for your specific game or engine; if none of them fit yet, the Contact page is the way to ask for it.

Ready to patch your save?

Pick a tool above; most take under a minute once your file is loaded.

Browse Editors