Have you ever wondered why more publishers don’t have “Share on WhatsApp” buttons on their mobile sites?” I mean, it’s pretty popular (500M+ users).
As with Facebook and Twitter, you can send data to WhatsApp through special deep links. The thing is, WhatsApp doesn’t have a true web client, so there’s no way to handle unsupported platforms or users without the app.
For example, ChallengePost’s Summer Jam site has a WhatsApp link that only shows up on mobile and prompts you to install the app if necessary.
All it took was two lines of code:
```html <!– This is a mobile-only WhatsApp deep-link. You can add an href attribute as a fallback.
FYI, message text must be URL encoded. –>
``` The big win with deep-link.js is reduced user friction. And for Summer Jam, that means more sharing, more registrations, and more hacks!