Simple hack to use WhatsApp Web in Mozilla Firefox browser

February 5, 2015 - Posted in Featured , Internet , Linux , Mac Os Posted by:

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Recently, WhatsApp launched its web client for desktop. But it is only available for Chrome Browser now. Which disappointed us as many users (including me) use Firefox browser. Specially Linux users, as Firefox is the default browser in popular distributions. However, anyone can install Chrome easily, but it’s an overhead to install Chrome and use it for WhatApp while we have our beloved Firefox installed.

The following guide is applicable on all platforms (Windows, Mac, Linux). However, I tested it on Windows and Linux only.

Now let me show you how to use Whatsapp Web  on Firefox in three easy steps:

First step:

Install User Agent Overrider add-on in Firefox. Go to the following link:

And click on Add to Firefox button. You do not require to restart Firefox.

Add add-on to Firefox

Second step:

Click on the option button of User Agent Overrider and then on Preferences.

Preference of User Agent Overrider

If you are using Linux then:

Paste the following line under #Linux section.

Linux / Chrome 41: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.0 Safari/537.36

If using other Operating Systems:

Windows 7:

Windows / Chrome 41: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36

Windows 8.1:

Windows / Chrome 41: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2226.0 Safari/537.36

Mac OS X Yosemite:

Mac / Chrome 41: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.1 Safari/537.36

Remember to paste the above lines in there respective sections.

If you are using an other version of OS . Then go to the following link to find the string compatible with your Operating System:

Close the Preference window.

Third and Final Step:

Again open the options of User Agent Overrider and Select Linux/Chrome 41.


Similarly if you are on Windows, Select Windows / Chrome 41. And Mac / Chrome 41 for Mac OS X.

Just make sure that User Agent Overrider is running (Blue icon), if not then click on it.

And done, now open

Whatsapp web on Firefox


The only limitation is that we can’t send or upload images from Desktop. Otherwise the overall experience is smooth with text and emoticons.

And yes support for other browsers including Firefox is coming soon, till then use this hack.

If you find any solution for sending images then please share it in comments.

  • none

    I just tried it on Firefox and it worked fine without any need of modification