designscan
Certificate of website quality
stumbleupon.com
stumbleupon.com
scored 73 (B) in an independent DesignScan check of design, speed, code, SEO, images, accessibility and how up-to-date it feels: better than 78 % of all websites scanned.
Scanned 20 April 2017Verify at www.designscan.me/site/stumbleupon.com