Bitly’s QR codes are dynamic: creating one starts with signing in to a Bitly account, the code points at a Bitly link that redirects to your destination, and how many codes you can create each month depends on your plan. A browser-based generator makes a static code with no account and no monthly cap, and because your link is encoded directly, the code keeps working with no service in between.
Bitly’s product is built around its links: a Bitly QR code encodes a Bitly short link, which redirects scanners to your real destination. That design is what enables its headline features, changing the destination later and tracking scans, but it means the code depends on your Bitly account and plan, and every scan passes through Bitly. A static generator encodes your URL directly into the QR image on your device, so there is no account, no redirect and no scan passing through anyone.
For a code you are printing on packaging, posters or business cards and simply want to work indefinitely, a static code is the safer choice: it cannot be disabled by a plan change and does not route your visitors through a third party. The honest tradeoff is that a static code has no built-in scan analytics and its destination cannot be edited after printing; if you need those, a dynamic service like Bitly is the right category of tool.
No. The link is encoded directly into the code, so it works for as long as your destination page exists.
No. A static code has no analytics, which is the tradeoff for having no account, no redirect and no tracking of your visitors.
No. Generate as many codes as you like, free, with no monthly cap.