Many Mac users eventually want to change the notification sound used by WhatsApp Desktop. Sometimes the default sound feels too sharp, too quiet, too common, or simply not pleasant to hear throughout the day. There are a couple of practical ways to approach this on macOS, depending on how much control you want and how comfortable you are editing application files.

This guide explains the main methods, what each one does, and what to be careful about before making changes.

Why Change the WhatsApp Sound?

A notification sound does more than alert you. It also shapes how distracting, urgent, or pleasant your work environment feels. If you use WhatsApp regularly for business, family messages, customer communication, or team coordination, the same repeated chime can become tiring over time. Changing it can help you:

• make alerts easier to recognize
• reduce annoyance
• better distinguish WhatsApp from other apps
• create a sound profile that suits your work style

Method 1: Replace the WhatsApp Sound File

One way to change the notification sound is to replace the sound file inside the WhatsApp application package. This method gives you direct control over the actual sound the app plays, but it also requires more care.

Step 1: Open the Applications Folder

Open Finder and go to your Applications folder. Locate the WhatsApp app.

Step 2: Show Package Contents

Right-click the WhatsApp application and choose Show Package Contents. This opens the internal folder structure of the app.

Step 3: Go to the Resources Folder

Inside the package, navigate to:

Contents > Resources

This is where app resource files are commonly stored.

Step 4: Find the Notification Audio File

Look for a file named:

incoming_message_notification.m4a

This is typically the sound file associated with incoming message notifications.

Step 5: Prepare Your Custom Sound

Choose the sound you want to use and convert it to .m4a format if needed. Then rename your new file exactly as follows:

incoming_message_notification.m4a

The filename must match the original so the app can find and use it.

Step 6: Replace the Original File

Move your renamed custom sound file into the Resources folder and replace the original. Before doing this, it is wise to save a backup copy of the original sound file somewhere safe so you can restore it later if needed.

Step 7: Restart WhatsApp

Quit WhatsApp completely and open it again. If the replacement worked, the app should now play your custom sound when a new message arrives.

Important Things to Know About File Replacement

Although this method can work well, it comes with a few limitations.

App Updates May Undo the Change

Whenever WhatsApp updates, the app package may be replaced or rebuilt. That can restore the default sound and remove your custom file, meaning you may need to repeat the process after certain updates.

Permissions May Prevent Editing

macOS may require administrator permission before allowing changes inside an application package. In some cases, System Integrity Protection or other security rules may also make editing less straightforward.

A Bad File Can Cause Problems

If the replacement file is corrupted, incorrectly encoded, too large, or not truly in the expected format, WhatsApp may fail to play the sound properly. It is best to use a short, clean audio clip with standard encoding.

Method 2: Change the macOS Alert Sound

Another approach is to change the system alert sound in macOS. Some desktop apps, including WhatsApp in certain situations or versions, may use the system alert sound rather than an isolated custom sound system of their own.

How to Do It

Open your Mac’s system settings and locate the sound settings. Change the alert sound to one you prefer. After that, test WhatsApp notifications to see whether the app now follows the new system alert sound.

When This Method Helps Most

This option is useful when:

• you want a quick and simple change
• you do not want to edit app files
• you prefer system-wide consistency
• WhatsApp is relying on macOS alert behavior

The tradeoff is that changing the system alert sound may also affect other parts of macOS or other apps that use the same alert profile.

Which Method Is Better?

The best choice depends on what you want.

If you want a unique sound only for WhatsApp, replacing the internal sound file is the more targeted option.

If you want a simpler, safer adjustment and do not mind a broader system-level change, changing the macOS alert sound is easier.

Best Practices Before You Start

Before making any change, keep these points in mind:

• back up the original notification file
• use a short sound clip to avoid awkward playback
• keep the volume and tone moderate so it remains useful over time
• test the sound after restarting the app
• remember that app updates may reset custom changes

Final Thoughts

Changing the WhatsApp sound effect on Mac is possible, but the exact result depends on how the current version of the app handles notifications. Replacing the internal sound file offers more direct customization, while changing the macOS alert sound offers a simpler path with fewer risks.

For users who want precise control, editing the app package is the stronger method. For users who prefer convenience and minimal hassle, adjusting the system alert sound may be the better fit.

A good notification sound should be noticeable without being irritating. Once you find the right one, everyday messaging on your Mac can feel much smoother and less intrusive.