Chess.com Custom Themes Boards - ChessHelper is a Firefox extension designed to enhance the online chess experience. With this tool, users can personalize their Chess.com interface by choosing from six different themes, 39 unique pieces, and 40 boards. This customization allows players to create a visually appealing environment tailored to their preferences. Additionally, the extension provides features such as notification control, enabling users to minimize distractions from popups while playing.

The extension offers several practical functionalities that improve gameplay efficiency. Users can enjoy fullscreen mode and a fixed board layout to avoid page jumping, especially during fast-paced games like HyperBullet. Other features include font customization, bandwidth-saving options, and the ability to disable chat to prevent unwanted interactions. The tool also aids in learning chess notation with coordinates on each square and simplifies resigning in Bullet games with a double-click feature.