(Translated by https://www.hiragana.jp/)
WPCleaner is a tool designed to help with various maintenance tasks, especially repairing links to disambiguation pages, checking Wikipedia, fixing spelling and typography, and helping with translation of articles coming from other wikis.
Documentation can be found on the tool's page on English Wikipedia.

To install WPCleaner on your computer:

• Requirements:
• Operating system: any, as long as it supports Java
• Jave 8 or more recent versions
• Create a dedicated folder on your computer (I wil refer to it as [PathToFolder] in the following explanations)
• Download the following files and put them in the folder you created:
• getdown.txt
• getdown.jar (don't worry about the warning, it's normal .jar files are considered as executable files, which they are)
• Open a terminal, a command line, or a PowerShell...
• Change to the folder where you put the files
• Execute one of the following commands:
• java -jar [PathToFolder]/getdown.jar [PathToFolder] (Note: . should work for [PathToFolder] if you execute the command directly from the folder where you put the files)
• [PathToJava]/java -jar [PathToFolder]/getdown.jar [PathToFolder] (Note: should work for all operating systems)
• Note: you may need to configure your firewall to allow javaw.exe (in the bin folder of your Java installation) to connect to the outside
• Getdown should then download all the files required for WPCleaner, and WPCleaner will start

Once the installation has been performed, WPCleaner will be updated automatically if run with the correct procedure:

• For Windows users, several scripts are provided:
• Use WPCleaner.bat to run WPCleaner with the normal interface (see comments in the file to know how to customize WPCleaner startup)
• Use Bot.bat to run WPCleaner in bot mode to perform tasks (see comments in the file to know how to use it)
• For Linux users, several scripts are provided (you first need to make them executable, by running command chmod a+x *.sh):
• Use WPCleaner.sh to run WPCleaner with the normal interface (see comments in the file to know hot to customize WPCleaner startup)
• Use Bot.sh to run WPCleaner in bot mode to perform tasks (see comments in the file to know how to user it)
• For all users, you can use the same command as the one used for the installation: [PathToJava]/java -jar [PathToFolder]/getdown.jar [PAthToFolder]