Upload to Danbooru is a free Chrome extension developed by ZipFile that allows users to easily upload images to Danbooru, a popular image board. With this extension, users can add a page action and a context menu option for images, making the uploading process seamless and efficient.

The extension serves as a replacement for bookmarklets, offering better referrer handling and improved functionality. It simplifies the uploading process by providing a straightforward method for users to upload single posts or batches of images.

To upload a single post via the context menu, users simply need to find a picture on the web, right-click on the image, and select "Upload to Danbooru." This quick and convenient option eliminates the need for manual copying and pasting of image URLs.

For uploading a post or batch of images, users can utilize the page action feature. After navigating to one of the supported sites, users can go to the image view page and click on the Danbooru icon, represented by a "cardboard box," located on the extensions toolbar.

It's worth noting that while this extension allows image uploads from any website, users should exercise caution to avoid uploading thumbnails or samples from sites not supported by Danbooru. A list of supported sites can be found on the Danbooru website.

Overall, Upload to Danbooru is a valuable tool for Chrome users who frequently upload images to Danbooru. Its seamless integration into the browser's context menu and page action make it a convenient and time-saving extension for image uploading.