Bitly is a web service for shortening and sharing long URLs, creating QR Codes and landing pages, and measuring engagement. Its tools include redirects, custom or branded links, bulk shortening, and downloadable QR Code designs. Clicks and scans can be reviewed by factors such as geography, referrer, and device. A basic short link can be created from the homepage without signing in, while managing links and viewing analytics require an account. Bitly offers a free plan and paid subscriptions whose features and limits vary.