Full Width GMail Preview Pane is a free Chrome extension developed by sina.khanifar. It falls under the category of Browsers and the subcategory of Add-ons & Tools. This extension aims to enhance the user experience of Gmail by hiding ads in the GMail Preview Pane labs feature and expanding the email view to fill that space.

With Full Width GMail Preview Pane, users can enjoy a clutter-free Gmail interface. The extension effectively removes ads that are displayed in the GMail Preview Pane labs feature, allowing users to focus solely on their emails. By expanding the email view to fill the space previously occupied by ads, users can have a more immersive and spacious email reading experience.

Overall, Full Width GMail Preview Pane is a useful Chrome extension for Gmail users who want to optimize their email viewing experience by eliminating ads and maximizing the available space for reading emails.