Facebook URL schemes on a mobile website, open app if its installed, otherwise go to the webpage

Question

I am creating a hybrid desktop/mobile website that all share the same pages, aka I do not have two separate URLs for desktop and mobile. I am trying to get Facebook links t

Answer 1

A Simple way would be CSS Media Queries.

Show the fb:// link for small device widths. and a regular http:// link for larger screen sizes.

EDIT

<a href="https://facebook.com/page" class="large-screen">Clicky</a>
<a href="fb://page/mypage" class="small-screen">Clicky</a>

Then using CSS Media queries hide one of the links depending on the size of the screen.

UPDATE

Instead of using CSS a more satisfying user experience can be created with javascript by attempting to open the deep link URL directly after opening the HTTP URL after X seconds in a timeout.

setTimeout(function () { window.location = "https://www.facebook.com"; }, 25);
window.location = "fb://";

The HTTP URL will always load, but in the case that deep links are not available, attempting to open one will silently fail, falling back to the web version.

Source: https://www.quora.com/How-does-Bitlys-Deep-Linking-detect-if-the-user-already-has-the-app-installed