AtCoder Opener is a Chrome extension developed by おがどら that enhances the functionality of AtCoder contest pages. By using this extension on the contest homepage, it allows users to open the submission screen and the printable problem statement in new tabs, making it easier to navigate between different sections of the contest.

With AtCoder Opener, users can conveniently access the submission screen and the printable problem statement without having to manually open new tabs or navigate through multiple pages. This saves time and improves the overall user experience when participating in AtCoder contests.

To further enhance usability, users can also configure keyboard shortcuts for the extension through the Chrome extension settings. This allows for quick and easy access to the desired functionality of AtCoder Opener.