Petschkos RPG-Maker MV & MZ-File Decrypter

PNG-Files (Images - ".rpgmvp & .png_-Files") don't need the decryption code, except you want to re-encrypt them. Please go here for restoring images without a key.

In this area you can De- and (Re-)Encrypt Files from RPG-Maker MV & MZ Games.

You can get the decrypt code from the file:

• RPG-Maker MV: "Game directory"/www/data/System(.json) or any encrypted image (".rpgmvp"-File)
• RPG-Maker MZ: "Game directory"/data/System(.json) or any encrypted image (".png_"-File)

Click "Detect" after you selected the System(.json) file. If you know the key, you can also just enter it in the text box.

Select Files & Info

1. Decrypt Code

Select a System(.json) or ".rpgmvp"/".png_" File and click Detect!

Detect

En-/Decrypt Code:

2. Select File(s)

En-/Decrypt File(s)

Advanced

Verify Fake Header?

(?)

This checks if the file header is correct (start of the file).

The header is only important for encryption (decryption can ignore it).

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In very rare cases some games use different header settings. You can find the correct header settings in:
"Game Directory"/www/js/rpg_core.js
Search for "function Decrypter()"; there, you can find all values.

Yes No (Ignore it) (?) Ignores the file header
Warning: Can cause invalid decrypted files! (It will decrypt even if the file was NOT encrypted. It will render the file useless.)

Only use "No" if you are sure that your file was encrypted by RPG Maker!

Header Values (Show)

Header Info

(?)

Expert Settings! Usually you don't need to change anything here! (Just in VERY RARE cases)

When do I need to change these settings?

Decryption

Usually you don't need the header for decryption.
(It is just thrown away)

It's just used to ensure that your file was encrypted by RPG Maker ^^

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Summary: You CAN decrypt any RPG File without knowing the correct settings.
Just change it to "Don't verify" if it can't verify the header for you =)
It will usually work with the default settings.

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Encryption

If you want to put a file back into the game, you NEED the Header. The game checks if the header is correct.

If the header is not correct, the game can't display it...

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Summary: You NEED the correct header. If the header is wrong, the game can't display it.
Usually, the default settings will work fine for 99 of 100 games.
So, please try the default setting first. If it doesn't work, then you can search for the correct header settings.

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You find them here:
"Game Directory"/www/js/rpg_core.js
Search for "function Decrypter()"; there, you can find all values.

Header Length (In Bytes):

Header Signature:

Header Version:

Header Remain:

Reset Header Values to default

Decrypt (Re)-Encrypt MV (Re)-Encrypt MZ

File-List

3. Download File(s)

Save all as ZIP File

(i)

There is a size limitation depending on your memory and your browser... To handle MANY files (500+mb), you should use the Java Decrypter!

Clear File List

(?)

Removes all files from the list below

In this area, you can restore PNG files (images - ".rpgmvp & .png_ files") from RPG Maker games without the decryption key.

Browser Support

First: Please note, that this script is only tested and developed on Firefox. You can help me to make it run on all browsers by reporting bugs!

• Internet Explorer (Unusable - Not supported) (Details) Download Files
  View Files
  En-/Decrypt
  ZIP Download - Unknown
• Edge (Usable)
• Google Chrome (Usable)
• Firefox (Usable)
• Safari (Usable)
• Opera (Usable)

How to use?

1. Check if the encrypted files have the file extension ".rpgmvp", ".rpgmvm", ".rpgmvo", ".png_", ".ogg_" or ".m4a_" - If they have these extension(s), then you can use this script.
   If you want to ENCRYPT files, they usually have a file extension like ".png" or something similar to that =)
2. Get the en-/decrypt code.
   New: PNG files (images - ".rpgmvp & .png_ files") don't need the decryption code, except you want to re-encrypt them. Please go here for restoring images without a key.
   • Upload the System(.json) file from the game and detect the code automatically. (Click on "Detect", after selecting the System(.json))
   • If the detection doesn't work, further instructions will pop up.
3. Select the file(s) for de-/encryption - You can select multiple files!
4. Hit the decrypt or encrypt button.
5. You can preview your decrypted files if you click on "View" next to the filename. (Of course you can't preview encrypted files)
6. You can save them by clicking on "Save". (The script will keep the file name and change the extension for you!) =)
   • You can also save all the files in the file list as a ZIP by clicking "Save all as ZIP File"!

Credits

Code Credits

• Petschko - For creating this project
• Stuk - For the ZIP library (jszip @ Github)
• pieroxy - For the LZ-String library (lz-string @ Github)
• eligrey - For the FileSaver.js library (FileSaver.js @ Github)
• Bootstrap - For a more user-friendly interface
• Anonymous - For the tip with the No-Key "decryption" for PNGs (This user wants to remain anonymous, but this belongs to them)
• r4sas - For help solving the Chrome "View-File" bug

Image Credits

• ??? - Lock-Icons (Please send me an E-Mail, I can't find the source anymore to add you!)
• Freepik  |  Flaticon - Uk-Flag Icon
• Creatype  |  Flaticon - Germany-Flag Icon
• IconsBox  |  Flaticon - Chinese-Flag Icon