How to Delete Language Files on Mac – Here is the Ultimate Guide

April 13, 2022Ashley Mae

When you download some apps on Mac, they will translate their interface to different languages. Though individual language files do not take up much storage space, all files combined might consume more than you expected, considering your number of files. You need to delete language files on your MacBook when you don't need the programs anymore. Read the article to learn more about how to delete language files on Mac.

Delete Language Files on Mac

Part 1: The Ultimate Solution to Delete Language Files on Mac

Whether you need to remove the program, delete language files on MacBook or get rid of the cache files, Aiseesoft Mac Cleaner is the best Mac cleaning software you need to get rid of unneeded files, including apps, language files, caches, and others to free up storage and speed up Mac performance. It also monitors the disk utilization, battery, memory performance, and even CPU usage.

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  • Uninstall unwanted applications, malware, and delete their associated files.
  • Monitor the disk utilization, battery, memory performance, and CPU usage.
  • Search for the desired language files and delete them from Mac completely.
  • Delete various types of junk files and caches to get more space on the Mac.
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Step 1:
After you have downloaded Aiseesoft Mac Cleaner on your Mac, you can install and launch the program. To remove the languages files on Mac completely, you can go to the Toolkit menu and choose the Uninstall feature to remove all the files.
Mac cleaner Toolkit
Step 2:
Click the Uninstall button to scan and remove the applications. In the pop-up window, select the Scan button and this software will scan your Mac for the apps. Wait seconds for the scanning process and click the View option to check the apps.
Scan Videw Apps Mac 800
Step 3:
Scroll down the left list to check the app and associated files, including the language files on Mac, such as the lproj extension. Just click the Clean button to clean up language files on Mac. Soon, the unwanted language files will be deleted from your Mac.
Remove Apps Mac 800

Note: Click the Rescan button to scan your MacBook again if you cannot locate the language files on Mac.

Part 2: How to Delete Language Files on Mac from Application

Since the language files of applications are stored within the apps, you can simply delete the unwanted ones from a large number of possible interface languages. Just go inside your apps and remove unnecessary language files on Mac. Here are some simple steps you should follow.

Step 1:
Open the Finder menu and navigate to the Applications folder. Check the app with tons of localization files. Right-click the app and select the Show Package Contents option from the drop-down menu.
Show Package Contents
Step 2:
Locate the language files folder for the application. You can also search for the language files, such as Japanese.Iproj or ru.iproj. The former tells you the language used, but the latter might need another helper.
Step 3:
Select unwanted language files and remove them. You need to do those steps again for each app you want to delete the unneeded language files from your MacBook accordingly.
Delete Language Files On Mac Directly

Note: Remember not to remove the Base.Iproj folder and English localization files.

Part 3: How to Remove Unused Language Files from Mac via Terminal

When you want to delete the file on a Mac, you will need to disable SIP, or System Integrity Protection, which prevents accidental modifications to certain local files. To avoid disabling SIP, you can use Terminal. The Terminal is Mac's command-line interface, which allows you to directly execute different types of processes and tasks.

Step 1:
Go to the Applications folder, click the Utilities app and select the Terminal option. After that, you can input the following command:
sudo find / \( -name *.lproj -and \! \( -name English.lproj -or -name en.lproj -or -name en_AU.lproj -or -name en_CA.lproj -or -name en_GB.lproj \) \) -exec rm -rf {} \;
Step 2:
If you want to delete foreign language files, you can add -name en_AU.lproj -or within the \(\) command and replace en_AU.lproj with the language file to be removed. Remember to copy and paste instead of typing it, otherwise, you might make mistake and break something.
Open Terminal From Utilities

Part 4: FAQs about How to Delete Language Files on Mac

Is it safe to delete language files on Mac?

Yes. Almost every application on your Mac has more than one language file. Since you only use a single or a few language files, the other files just waste space on your Mac and so can be safely deleted.

Why should I delete language files on Mac?

macOS is undeniably good and versatile, but it has some drawbacks, such as the installation of multiple language files. They are useless for users who run macOS in their primary language. So, you need to remove the languages files on Mac to free up your space.

Is it possible to remove the certain language files on Mac in batch?

Yes. Instead of searching for the desired languages files on Mac, you can simply download some applications, such as Monolingual to clean up the language files on Mac in batches.


Having read the tips, you can quickly remove unwanted language files on your Mac to free up your space and optimize Mac. You can use Aiseesoft Mac Cleaner to remove the app as well as the associated files. Of course, Terminal from the Mac can directly remove the junk files and the language files. If you are familiar with the process, you can also remove the files from the application directly.

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