I\'ve been searching around the internet for a while now and am unable to find anything that works. I want to use my own custom image for the share button but whenever I try
This code works fine for me:
<!-- facebook -->
<img src="[YOUR_FACEBOOK_PIC]" alt="Share on Facebook" onclick="window.open('https://www.facebook.com/sharer/sharer.php?u='+encodeURIComponent('[YOUR_PAGE_URL]'),'facebook-share-dialog','width=626,height=436'); return false;">
<!-- twitter -->
<img src="[YOUR_TWITTER_PIC]" alt="Share on Twitter" onclick="javascript:window.open('https://twitter.com/share?text=[SOME_TEXT_TO_PREPOLUTATE_TWEET]&url=[YOUR_PAGE_URL]','Twitter-dialog','width=626,height=436'); return false;">
<!-- google+ -->
<img src="[YOUR_GOOGLE_PIC]" alt="Share on Google Plus" onclick="window.open('https://plus.google.com/share?url=[YOUR_PAGE_URL]','Google-dialog','width=626,height=436'); return false;">
Just replace the text between brackets, and don't forget to "url encode" all the text that goes in the url to avoid issues.
And it doesn't need the SDK for any of them.
Here are references to the official documentation for each of them: