The XKCD Alt Text is a Chrome extension that aims to improve the readability of the XKCD web comic. Developed by James Kwan, this free add-on falls under the category of Browsers and specifically the subcategory of Add-ons & Tools.

The primary function of the XKCD Alt Text extension is to add a description beneath the comic, eliminating the need to quickly read the hover text before it disappears. This enhancement makes it easier for users to understand the comic's context without any time constraints. Additionally, the extension offers the option to move the header below the comic, improving its visibility. This feature can be easily enabled or disabled according to user preference.

Updateof the XKCD Alt Text extension ensures its compatibility with websites using HTTPS, providing a secure browsing experience for users.

Overall, XKCD Alt Text is a valuable Chrome extension for XKCD enthusiasts, enhancing the comic reading experience with its convenient description feature and customizable header placement.