Professional Online Save File Editor - 100% Free & Secure
Welcome to the most powerful Hollow Knight save editor available online. This professional hollow knight save editor tool allows you to modify your save files for both PC and Nintendo Switch, giving you complete control over your game progress, resources, abilities, and more. Start editing in seconds with our intuitive interface!
Upload your Hollow Knight save file to begin customizing your game experience
Save your original file first
Select or drag your save file
Modify your game data
Get your modified save
Before using this hollow knight save editor, always make a backup copy. In your Hollow Knight save folder, locate the file named user1.dat (or user2.dat, user3.dat, user4.dat depending on your save slot).
Tip: Rename your original file to something like user1_backup.dat or copy it to a safe location on your computer.
Click the "Select Save File" button above, or simply drag and drop your save file (e.g., user1.dat) anywhere on this page. For Nintendo Switch users, enable "Nintendo Switch Mode" before uploading.
The hollow knight save editor will automatically decrypt your file and display it as editable JSON data.
Once loaded, you'll see JSON with "key": value pairs. Use Ctrl+F (or Cmd+F on Mac) to search for specific values.
Example: Search for "geo" and change its value to 9999 to give yourself 9999 geo (currency).
After making your edits, click the appropriate download button:
The file will be saved as user1.dat. Move this file to your Hollow Knight save folder, replacing the original (that you already backed up!).
The Hollow Knight save folder location varies by operating system and platform. Here are the most common paths:
C:\Users\[YourUsername]\AppData\LocalLow\Team Cherry\Hollow Knight\Press Win+R, paste the path, and press Enter
~/Library/Application Support/unity.Team Cherry.Hollow Knight/Press Cmd+Shift+G in Finder, paste the path
~/.config/unity3d/Team Cherry/Hollow Knight/or (Steam Play/Proton):
~/.local/share/Steam/steamapps/compatdata/367520/pfx/drive_c/users/steamuser/AppData/LocalLow/Team Cherry/Hollow Knight/Requires a modded Switch console and save management tools like Checkpoint or JKSV to export/import save files.
Can't find your save folder? Search online for "hollow knight [your OS] [your platform] save file location" (e.g., "hollow knight windows steam save file location"). Epic Games Store and Game Pass may have different paths.
With this hollow knight save editor, you can also modify exploration-related data such as discovered areas, visited rooms, unlocked map sections, boss defeat status, NPC interactions, quest progress, and achievement completion. The editor provides complete control over your game progression, allowing you to jump to any point in the game or simply adjust specific aspects of your playthrough.
This hollow knight save editor is built with modern web technologies including Next.js, TypeScript, and React. All processing happens entirely in your browser - no files are ever uploaded to any server, ensuring complete privacy and security. The tool uses industry-standard AES encryption in ECB mode to handle PC save files, automatically detecting and applying the correct encryption key used by the game.
For Nintendo Switch saves, the hollow knight save editor works with plain text JSON files, as Switch saves are not encrypted in the same way. The editor includes automatic format detection, so you don't need to worry about technical details - just select your platform and the tool handles the rest.
The history management feature uses your browser's localStorage to keep track of recently edited files, making it easy to switch between multiple save files or restore previous edits. However, remember that clearing your browser data will also clear this history, so always maintain proper backups of your save files outside of this tool.
Always backup your original save files! Before using this hollow knight save editor, create a copy of your save files and store them in a safe location. While this tool is designed to be safe and reliable, unexpected issues can occur, and having a backup ensures you won't lose your progress.
Validate your JSON: When editing save files manually, ensure your JSON syntax is correct. Invalid JSON will cause the game to fail loading your save. Use the browser's search function to help locate fields, and double-check your edits before downloading.
Test with caution: Some extreme modifications (like setting values to impossibly high numbers) might cause unexpected game behavior or crashes. It's recommended to make small changes first and test them in-game before making extensive modifications.
Educational use: This hollow knight save editor is provided as-is for educational purposes and personal use. Modifying save files is done at your own risk. We are not responsible for any issues that may arise from using this tool.