Style External Links with CSS

By  on  

Styling external links is a common practice on most informational sites likes Wikipedia.  As a user, it's nice to know when you're being sent to another resource.  Many sites do the external links check on the server side, adding a `rel=external` attribute value or `external` class to external links.  In some cases that isn't possible or plausible.  After trolling around the interwebs, I found the following useful CSS snippet for styling external links:

/* long version */
a[href^="http://"]:not([href*="mysite.com"]),
a[href^="https://"]:not([href*="mysite.com"]), 
a[href^="//"]:not([href*="mysite.com"]), {
    
}
/* shorter version! */
a[href*="//"]:not([href*="mysite.com"]) {
    /* external link styles, use :before or :after if you want! */
}

First you have to qualify the start of the link, then qualify the domain.  Internal links wont match and external links wont match the comparison.  A useful snippet and something to keep in your library in case you need it!

Recent Features

  • By
    Responsive and Infinitely Scalable JS Animations

    Back in late 2012 it was not easy to find open source projects using requestAnimationFrame() - this is the hook that allows Javascript code to synchronize with a web browser's native paint loop. Animations using this method can run at 60 fps and deliver fantastic...

  • By
    Conquering Impostor Syndrome

    Two years ago I documented my struggles with Imposter Syndrome and the response was immense.  I received messages of support and commiseration from new web developers, veteran engineers, and even persons of all experience levels in other professions.  I've even caught myself reading the post...

Incredible Demos

  • By
    PHP Woot Checker – Tech, Wine, and Shirt Woot

    If you haven't heard of Woot.com, you've been living under a rock. For those who have been under the proverbial rock, here's the plot: Every day, Woot sells one product. Once the item is sold out, no more items are available for purchase. You don't know how many...

  • By
    MooTools 1.2 Tooltips: Customize Your Tips

    I've never met a person that is "ehhhh" about XHTML/javascript tooltips; people seem to love them or hate them. I'm on the love side of things. Tooltips give you a bit more information about something than just the element itself (usually...

Discussion

  1. What if there is a link in my website like http://external.com/?referer=mysite.com ?

    • You add can another pattern match for whichever referer pattern you use:

      a[href*="?referer"] {
       /* external styles */
      }
      
  2. Bruno Seixas

    Thanks for the snippets :)

  3. David, you can do the same with shorter selector:

    [href*="//"]:not([href*="mysite.com"]) { }
    
  4. Thanks for the code :)

  5. Nice snippets, I love this but how about browser compatibility?

  6. Bubba

    So, what styles are typically used for external websites? A change in font color? Background color?

  7. Is have used this slidely different for my wordpress site:

    /* show external links differently */
    a[href^="http://"]:not([href*="mydomain.com"]):before{ 
        content: " ";
        width: 16px;
        height: 16px;
        background: no-repeat url('images/link.gif'); 
        padding-right: 1.2em;
    }
    
  8. How to ignore Links With images?

    example: http://jsfiddle.net/Ridermansb/NRw97/1/

  9. Armin

    @Riderman You don’t. CSS is designed to to be applied in one traversal of the DOM tree. This limits it to selectors that are based solemnly on what was before (higher up) in the dom tree. You cannot select on what comes after/deeper in the DOM tree in CSS.

    In your example you are trying to style an a element based on the fact, that an img element is deeper in the tree.

    Solution: use a css-class for such a elements that should ignore the styling done through the [href=??] matching selectors.

    a.no-external-link-style {
    /*undo styling through a[href*=”//”]:not([href*=”mysite.com”]) */
    }

  10. tzee

    @Riderman Use JS / jQuery to add a class to links that wrap images, then add a css rule that removes or hides your :before, based on that class. I’m using :after, and FontAwesome..

    jQuery('a img').parent().addClass('linked-img');
    
    a[href*="//"]:not([href*="mysite.com"]):after { 
        font-family: FontAwesome;
        content: "\f08e";
        font-size: 13px;
        color: #ccc;
        padding-left: 7px;
    }
    a.linked-img:after {
    	display: none;
    }
    

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!