ScrapBook Captures It all
ScrapBook is a Firefox addon that is perhaps the most useful written. Using ScrapBook it is possible to capture parts or all of a web page and to save it for future reference. It is also in one sense better than bookmarking a page because as much or all of the page is saved locally as it existed at the time of the capture. It is also an alternative to taking a screenshot because all the elements are saved in a text format and can therefore prove useful in the future.
ScrapBook’s options don’t end there. Once a page is captured, certain portions can be highlighted, an annotation or note can be added to them to ease future reference or certain paragraphs or elements can be removed by clicking on the Dom button. A page can actually be bookmarked and reside in ScrapBook’s folder as a straightforward bookmark as well. When clicking Alt+k to load ScrapBook in the Firefox sidebar all captures can be searched, not only by title but by the text inside them. Notes, which can be added by right clicking a captured item in the sidebar, add further information for and to captured pages. The Tools drop down menu that resides in the top right hand corner of the ScrapBook sidebar includes additional features such as import/export that essentially makes a back up of captures, calculation of size that provides an overview of the size of captured pages and many more.
As of this article the current version of this superior addon is 1.3.5 and works on Firefox 3.0 to 3.5.x.