Hollow

https://bloodorca.github.io/hollow/

Online save file editor.

The steps behind decryption and encryption were taken from @KayDeeTee's Hollow Knight Save Manager.

Instructions

1. Make a backup of your save file. In the Hollow Knight save folder, I'll rename user1.dat to user1_a.dat.
2. Select or drag the source save file into the online utility. I will drag in user1_a.dat as my source.
3. The online editor should show you JSON with "key": value pairs. Modify it to your liking. I will change my "geo" to 777.
4. Download your new modified save file. Once downloaded, I will rename it to "user1.dat" and move it to my Hollow Knight save folder.

Where is my save folder?

The Hollow Knight save folder may be different depending on your OS (windows, mac, linux) and game platform (steam, gog, etc). Google it like so hollow knight mac steam save file location .