SaveEditor
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GameMaker Studio.ini / file0INI

Undertale Save Editor

Edit Undertale save files online. Change LV, HP, gold, items, fun value, and route flags.

Edit Undertale SaveGeneric Editor
Files encrypted in transit
Server-side parsing
Auto-detect format

About Undertale Saves

Undertale uses simple INI-format text files for saves. The main save file (file0) contains your character's stats, inventory, and story progress, while the persistent file (undertale.ini) tracks meta-progress across resets.

What You Can Edit

LV (Level of Violence)
HP and Max HP
Gold
EXP
Inventory items
Kills per area
Fun value
Player name
Story progress flags
Persistent flags (Genocide/Pacifist markers)
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How to Edit Undertale Saves — Step by Step

1

Navigate to %LocalAppData%/UNDERTALE/

2

Copy 'file0' and 'undertale.ini' — back them up

3

Upload either file to SaveEditor

4

Edit values like Name, LV, HP, Gold, and item slots

5

Download and replace the original file

Save File Locations

🪟
Windows

%LocalAppData%\UNDERTALE\file0

🍎
macOS

~/Library/Application Support/com.tobyfox.undertale/file0

🐧
Linux

~/.config/UNDERTALE/file0

file0 is the main save. undertale.ini stores persistent/meta data that survives resets.

File format: INI | Extension: .ini / file0

Platform Compatibility

🖥️

PC

Supported
🎮

PS4

Not Supported
🎮

PS5

Not Supported
🎮

Xbox

Not Supported
🕹️

Switch

Not Supported

⚠️ Console versions store saves on the device. Switch saves can be dumped with homebrew tools.

How SaveEditor Handles Undertale Files

Auto-Detect

Automatically identifies INI format from file content

Smart Editing

Game-specific labels, categories, and quick-edit presets

Re-encode

Downloads in the original format — compression and encoding preserved

Frequently Asked Questions

Where are Undertale saves?

%LocalAppData%/UNDERTALE/ on Windows. Look for 'file0' (main save) and 'undertale.ini' (persistent data).

Can I reset a Genocide run?

You can edit the persistent flags in undertale.ini to reset route markers.

Can I change my character name?

Yes! Find the Name field in file0 and change it.

Ready to edit your Undertale save?

Upload your save file and start editing in seconds. No sign-up required. 100% free.

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