Switch Save Converter

• This program was written with assistance from Proton's Lumo AI.

Converts save file formats between Eden, Checkpoint and JKSV.

There are two modes, Manual mode is a simple 'point the source to a Checkpoint folder or JKSV/Eden zip file and convert'.

Newest Save File mode looks for the most recently modified Checkpoint folder or JKSV file inside a parent folder and converts that to the desired target format.

Save file structure

Checkpoint

Checkpoint save format

A folder which includes the actual game save file(s) in the format of Date Switch User (YYYYMMDD-HHmmss username) e.g. 20260223-162127 Guntar

Checkpoint Folder structure

• A folder with the name format of the Switch game ID in Hex (0x0...) and then the name of the game, or the same ID repeated.
• This folder will then include the actual Checkpoint save(s) which are folder(s) containing the actual game save data

\-- Checkpoint
	\-- saves
		\-- 0x0012345B769 Best Game in the World
			\-- 20260223-162127 Guntar
				├── main
				├── trade
				├── secretes!
		\-- 0x00123D56789 0x00123456789
			\-- 20260223-162129 Guntar
				├── save.bin

JKSV

JKSV save format

A zip file with naming convention of Switch User - Date in format User - YYYY-MM-DD_HH-mm-ss.zip e.g. EVIL ME - 2026-04-12_18-46-11.zip. Files are directly inside, with no folders.

JKSV Folder structure

• JKSV folder will contain folders with names of the Switch Title
• Inside each folder will be the save files in zip format. Save data files are directly inside, with no folders (unlike in Eden).

\-- JKSV
	\-- The Adventure of Bolt Having a Good Time
		*── EVIL ME - 2026-04-12_18-46-11.zip
			\-- folder
				├── file1
			├── file2
			├── file4U
			├── save
		*── -silly-name0- - 2026-04-12_18-47-11.zip
			├── save

Eden

Eden exports saves in zip format with a folder inside. This singular zip file has the naming format of Game Name Save Data - Date.zip e.g. PocketPals Purpl save data - 2026-05-20 18_02.zip or Tomisdashing Life_ Living the Nightmare save data - 2026-05-28 17_36.zip.

Inside will be a folder named after the Switch Title ID (so without the 0x0 hex prefix) e.g. 01008F6D12349, then inside that folder will be the actual save files.

Eden will not accept the save when importing without the folder inside matching the title ID for the game you are importing a save into.

*── PocketPals Purpl save data - 2026-05-20 18_02.zip
	\-- 01008F6D12349
		\-- folder
			├── file1
		├── file2
		├── file4U
		├── save

Acknowledgements

• Forked Switch Games JSON Repo

• Original Switch Games JSON Repo

• SwitchBrew