World Clocks new tab page is a free Chrome add-on developed by Martín Peverelli. This add-on replaces the new tab page and allows users to configure up to 12 world clocks.

The main feature of this add-on is the ability to display a main local clock and up to 12 smaller clocks, each configurable to any timezone. Users can easily keep track of different time zones without leaving their browser.

All settings are stored using Chrome Storage, ensuring that users' clock configurations are kept in sync across devices. The clocks can be configured to display time in either 12-hour or 24-hour format, depending on user preference.

In addition, World Clocks new tab page offers two themes: 'light' and 'dark'. Users can choose the theme that best suits their preferences and aesthetics.

Furthermore, this add-on supports custom background URLs, allowing users to load an online image as the background for their new tab page. This feature adds a personal touch to the browsing experience.

With its user-friendly interface and customizable features, World Clocks new tab page is a useful tool for those who need to keep track of multiple time zones while using Chrome.