PixTag is a free Chrome add-on developed by spoilerline.com. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This program allows users to easily manage their bookmark tags on the popular art platform, pixiv.

The main features of PixTag include the ability to view all bookmark tags that you have tagged on the bookmark page. Additionally, you can submit new bookmark tags from any page, making it convenient to organize your bookmarks. The program also provides a link to the bookmark tags edit page, allowing for easy access and editing of your tags.

One standout feature of PixTag is its image viewing capabilities. With a simple click of the "◱" button located in the lower left corner, you can view the image associated with the bookmark. The extension allows you to zoom in and out of the image, as well as view it in fullscreen mode.

Overall, PixTag is a useful tool for pixiv users who want to efficiently manage and organize their bookmark tags. Its intuitive interface and convenient features make it a valuable addition to the browsing experience.