Easy setup, easy to integrate in your website: Simply copy and paste the code to the relevant position in your HTML document.
No privacy concerns: The button code is completely embedded in your website. No external requests, no cookies, no tracking. As an alternative you have the option to host the code on your server or webspace.
Fast: No performance problems.
Responsive size: The size of the buttons depends on the CSS font-size of the parent element.
Scalable: The buttons look crisp on HiDPI (Retina) displays and at all zoom levels.
Customizable by your own CSS (for instance via child selectors, see the HOWTO section) or code modifications.
Free of charge.
The code is optimized for HTTP compression (enabled on most websites). Depending on your settings the maximum compressed size will be about 4.3kB. Embedded in your HTML code the compression ratio may even increase.