Web-novel Seamless Reader is a Chrome extension that allows for seamless reading on novel posting sites such as "小説家になろう" (Narou). With this add-on, users can automatically load the content of the next page simply by scrolling, eliminating the need to click on the "Next" button.

One of the key features of Web-novel Seamless Reader is its seamless reading functionality. By scrolling, users can automatically load the content of the next page without having to click on the "Next >>" button. This feature skips the preface and afterword, focusing solely on the main content of the novel.

Another useful feature of this add-on is the bookmark functionality. Even in seamless reading mode, users can keep track of their reading progress. By clicking on the extension icon in the upper right corner, users can see their reading history, including the progress of the currently opened novel and other novels they have read. This information is updated in real-time as the content is seamlessly loaded, eliminating the need for manual saving. Users also have the option to delete the reading history for each individual work.

It is important to note that the bookmark functionality of Web-novel Seamless Reader is separate from the bookmark feature of "小説家になろう" and does not sync the content between the two. The reading history data is stored locally on the user's PC, so it does not reflect the reading progress on smartphones. Each PC will have its own separate reading history.

Overall, Web-novel Seamless Reader is a convenient Chrome extension for those who enjoy reading novels on sites like "小説家になろう." With its seamless reading and bookmark features, it provides a smoother reading experience and helps users keep track of their progress.