Flexible Tool written in Python to create Translation Patches for games.
The interface runs in your Web Browser.

The list of supported files is currently:

• JSON (for RPG Maker MV, MZ and other games)
• Javascript (for RPG Maker MV, MZ and other games)
• CSV (for RPG Maker MV, MZ and other games)
• INI (for RPG Maker MV, MZ and other games)
• TXT (i.e. regular text files)
• Ruby Marshal (.rxdata, .rvdata, .rvdata2 for RPG Maker XP to VX Ace)
• RGSSAD Archives (.rgssad, .rgss2a, .rgss3a for RPG Maker XP to VX Ace)
• RPY files (for Renpy Scripts)
• MED (md_scr.med archives, used by Triangle and Lusterise games)
• YPF Archives and YBN Scripts (YU-RIS Engine)
• KAG (KiriKiri) Engine scripts (.ks and .tjs)
• NScripter scripts (see the dedicated readme for details)
• Subtitles (.lrc, .ssa/.ass, .srt)

More will be added as I see fit.

All screenshots are from version 3.27.

• Introduction
• Installation
• Usage
• Project Management
• Translation
• Advanced Usage

RPGMTL is a tool, written in Python, allowing you to extract, translate and patch strings from your Games.
It works via a small web server, and the UI uses your own web browser.
It's lightweight and is designed to let you iterate over new game updates, to keep your patches up to date.

RPGMTL allows multiple people to work at the same time on the same project.
Some operations are blocking on purpose (for example, during string extraction), in case multiple users are working at the same time.

You need a system supporting Python 3.13 or higher.
Make sure to have it installed.
An older version might work, but isn't supported.

Grab a copy of this repository.
For the latest version:
(It might be unstable, contains experimental features or unfinished features)
Either git clone:

git clone git@github.com:MizaGBF/RPGMTL.git

or use the Green Code button on top and download as ZIP (Don't forget to unzip).

For older and stable versions:
Go under the Release tab.

Install the requirements.
Run the following command, in the same folder:

python -m pip install -r requirements.txt

On Windows, if you don't know how to do it, you can SHIFT+Right Click in the folder and select Open in Terminal/Open PowerShell window here/Open Command prompt here.

Additionally, if Python isn't in your PATH, replace python with the full path to its executable (for example C:\python3\python.exe -m pip install -r requirements.txt).

If you don't wish to install all the requirements:
aiohttp is required for RPGMTL to function.

python -m pip install -U aiohttp

Deep Translator is required for the Google Translator plugin to function.

python -m pip install -U deep-translator

Google Gen AI SDK is required for the Gemini Translator plugin to function.

python -m pip install -U google-genai

Simply repeat the installation process.
Make sure to keep settings.json file and your projects folder.
If a plugin's implementation changed, you might need to Extract the strings again in your project.

Simply run rpgmtl.py to start a small web server.
Either in a terminal:

python rpgmtl.py

Or, on Windows, by double clicking the file and starting it with Python.
(Don't try to start it with the Python Launcher, the one with a rocket icon, it won't work. Make sure it's python.exe. Do Right Click and Open with... to go select it, if needed.)

Then you can access it with your favorite web browser.
http://localhost:8000/ should be the default address. Direct Link.

To stop it, use the Shutdown button on the top left of the Home Page, or press CTRL+C on the server console.
An Autosave is ran on shutdown, and also every 5 minutes otherwise.

Before starting anything, you can tinker with the various settings.
Global settings will affect every projects.
They can be overrided individually for each project, if needed.

RPGMTL is entirely usable without mouse:

• Tab, Shift+Tab, Arrow, Page Up, Page Down, Home and End keys to navigate around. Tab works even if you're focused on a text input.
• F1 key to open and close the help, when available.
• Escape key to use top left button (Either Back or Shutdown) and to close the help if open.
• Enter key lets you interact with the highlighted element or validate a text input.

In the file page:

• Ctrl+Space to go the next enabled untranslated string.
• Ctrl+Shift+Space to go the next untranslated string.
• Ctrl+H to go back to the home page, if available.
• Ctrl+P to go back to the project page, if available.
• Ctrl+R to reload the page, if available.
• Ctrl+M to move and slide the original and translated string areas.
• Ctrl+B to cycle the selected string marker color. Markers are at the global level.
• Ctrl+O to copy the selected string original version.
• Ctrl+I to copy the selected string translated version.
• Ctrl+U to unlink/link back the string from/to its global translation.
• Ctrl+Y to ignore the string.
• Ctrl+Shift+Y to ignore all the occurences of this string.
• Ctrl+Alt+Y to ignore all the occurences of this project.
• Ctrl+Left/Right to go to the previous/next file, if available.
• Ctrl+E to focus the edit area, if open.

When the edit area is open:

• Escape key to unfocus the edit area, if focused.
• Ctrl+S to confirm and save the translation.
• Ctrl+Q to cancel and close the edit area.
• Ctrl+K to translate the original string.
• Ctrl+L to search the original string.
• Ctrl+O to copy the original string, if focused.
• Ctrl+D to delete the translation.

Some shortcuts have alternatives. Click the Help button for a reminder.

You can change the port used by RPGMTL with the -p/--port parameter:

python rpgmtl.py --port 60000

The project is intended to be used on a local network.
If you wish to access it remotely, it's recommended to enable HTTPS.
You'll need to have a valid certificate and key.
Place them in the folder and run once:

python rpgmtl.py --https name_of_your_key_file name_of_your_password_file

If everything goes well, SSL is enabled should appear in the log.
The certificate and key locations will be saved for the next use.

If you wish to revert this setting, run once:

python rpgmtl.py --http

RPGMTL will forget these file locations.

This is another recommended feature if you wish to access it remotely.
If you wish to filter which IP can access the server, create a whitelist.txt file near rpgmtl.py.
Add the allowed IP inside, one by line.
It supports both IP v4 and v6.

Then to enable the filter, run once:

python rpgmtl.py --ip on

To disable it at some point in time:

python rpgmtl.py --ip off

Run python rpgmtl.py --help for alternative options.

To disable a plugin and stops it from loading, you can create a file named disabled.txt in the same folder as rpgmtl.py, with the name of the plugin files you which to ignore, one per line.
For example:

json
rm_marshal

will disable both those plugins.

On the Home Page, click on New Project.
Select the location of the game you wish to translate.

You'll then be asked a project name. This name will be the one used for the project folder and in the Web UI. Once done, hit Create. The game files will be copied for later use and backup purpose.

You can then modify your Project Settings and then Extract the Strings.

If you go into the projects folder and into your project folder, you'll see:

• edit: This is where you can add additional files to put in the final patches. Such as translated images, etc... The inside must mirror the game folder structure.
• originals: This is where RPGMTL keeps a copy of the targeted game files. Although it's recommended to keep a clean copy of your game, you'll find original files here, if needed.
• release: This folder only appears upon using the Release a Patch button. Your translated files will appear inside, and only the translated ones. Unaltered and ignored ones won't be copied inside.
• config.json: A file containing various infos about your project.
• strings.json: A file containing the game strings and translations. Backups are created when doing various operations (such as extracting) but nothing less. Feel free to do manual backups if you wish.

More files and folders might appear.
For a general use, you only need to care about the edit and release folders.

• Make sure RPGMTL isn't running.
• Go into the projects folder and delete the project you wish to remove.

On your project page, click on Browse Files.

Here you'll be able to go through the detected files.
You can set a file to be ignored by pressing CTRL+Left Click on it. It'll then appear red.
A file with no remaining strings to translate will appear green.
Some RPG Maker MV/MZ files are set to be ignored by default.

Additionally, folders containing virtual files will appear with a light grey background.

Click on a file to open the list of strings found inside.
Strings are listed in groups, and the group name, if it exists, is show on the top left. It's mostly here for context and as a visual aid.

The list shows, on the left, original strings and, on the right, translations.
You can click on one to open the editing box.
All occurences of a string are, by default, linked. So, if you translate a string, all occurence of that string will have this translation.
You can change this behavior by pressing Shift+Left Click on a string you wish to unlink. Its box will become green. You can also set a string to be ignored, as for files, by pressing CTRL+Left Click. It'll be skipped during the patching process.
Finally, to delete a translation, click on it and on the Trashbin button.

Click the help button on the top right corner for more shortcuts and details.

When modifying a string, you have the option to get a machine translation using the yellow Translate button.
Doing so will put the translation in the editing area, for you to modify.

If you wish to translate a whole file, use the dedicated button on top of the string list.
Be aware rate limits and the like might cause you issues if you plan to translate a lot of files this way in a short time span.
Please refer to plugins.md if you wish to extend RPGMTL capabilities in that regard.

If you're translating a recently released game, you can easily update your project to the latest version.
Click on Update the Game Files and select where this new version is. Fresh files will be fetched.
You can then click on Extract the Strings to update the string list.
A backup of strings.json will be created beforehand, just in case (be aware it exists).

When browsing your updated string list, you might spot some with a yellow rectangle on the left: It indicates which strings got added in this new version.

Custom Patches are used to automate the patching of the some part of the game.
This can be done via the Add a Fix menu.
Inside, you can set small Python code snippets, which will run during the patching process (after everything else, to be exact).

To do so, create one and set what filename this code targets. For example, to target all the RPG Maker MV/MZ map files, you can set data/Map. Or to target a specific file, set its whole path (for example data/Map001.json).
For files contained into archives, you merely need to match the archive name.

In the Fix Code text box, you can put the Python code to run.
You have access to a variable called helper to help you with your modifications.
It includes the following:

• A content bytes attribute: It's the patched file, as bytes, and what you must modify.
• A modified bool attribute: Set it to True if you modified the file content.
• from_str method to get a String version of the content. to_str allow you to convert it back and set it inside content.
• from_json and to_json do the same, with JSON content.

Example, to edit a RPG Maker MV/MZ System.json locale:
File match is:

data/System.json

Code is:

d = helper.to_json() # get the content as json
d["locale"] = "en_UK" # modify the locale
helper.from_json(d, separators=(',',':')) # convert it back to bytes
helper.modified = True # raise modified flag to True

The complexity will grow for other file formats.
The PatcherHelper is defined at the start of rpgmtl.py, if you wish to take a closer look at it.

This button allows you to import strings.json and strings.py files from older RPGMTL versions.
Custom patches won't be imported, as they relied on different codes.
Be aware it's a convenience feature and far from perfect.

This button allows you to import content from RPGMaker Trans Patch files.
Select the location of a RPGMKTRANSPATCH file, and it will read the content of the patch folder.
If the RM Marshal plugin is present, the rm_marshal_multiline setting of the project will be used to decide how to split the strings with new lines or not.
For the best results, you might want it to be enabled.
Be aware it's a convenience feature and far from perfect.