When surfing the Internet, whenever we come across a useful or favorite website/URL, we are likely to add it into our bookmarks. Over time, the bookmarks we collected become more and more and messy (especially the ones that are broken and duplicated). At this time, do a thorough cleaning is very meaningful. However, manually opening webpage links one by one for verification and collation fomr the inbuilt bookmark manager of web browser is extremely tedious and inefficient. So, we have to utilize third-party tools.