Streaming live at 10am (PST)

Adapting Design/CSS for Facebook Webview

Today I’ve noticed on a client’s website that the Facebook Webview broke some of the mobile design I built on webflow because it made the viewport smaller than a mobile browser’s. After scratching my head a bit and searching stack overflow for ideas I’ve gathered bits and pieces of scripts to adapt my CSS in case of facebook app viewing disaster :slight_smile:
I’m no JS / Jquery expert so if you have ways of making this better… be my guest :slight_smile:

This tip is good for you if :
— You want to adapt your mobile design to display correctly when viewed through facebook app
— You know / understand CSS

You need 3 things to happen :
write functions that
1 - Check if you’re in the Facebook app
2 - If yes adapt CSS of specific classes
3 - launch this magic when the document is ready

According to where your display issue is happening you can either add the code to
the specific page custom code or site settings if you need it everywhere.

It looks like that :

What you need to update with your specific css parameters and class names is
$('.YOUR-CLASS-NAME').css('PARAM', 'VALUE'); // Update css

Here’s the code if you want to copy-paste

        function isFacebookApp() {
            var ua = navigator.userAgent || navigator.vendor || window.opera;
            return (ua.indexOf("FBAN") > -1) || (ua.indexOf("FBAV") > -1);

        function adaptCSSFbBrowser() {
          var ua = navigator.userAgent || navigator.vendor || window.opera;
          if (isFacebookApp(ua)) { // Facebook in-app browser detected
              $('.YOUR-CLASS).css('PARAM', 'VALUE'); // Update css

        $(document).ready(function() {


1 Like

Does this still work, what site have you got it on?

I used it on this site :
To the best of my knowledge it still works :slight_smile: