This addon allows to automatically download from cache those elements that you have encountered while your internet daily-use
For instance, with a rule matching PDF bills that your bank or phone company gives you each month, you will be able to save them automatically when you have received the mail and opened the bill, You don't have to bother you to save them manually in a specific folder for backup, this addon does it for you.
Same for all those images of funny cats that your familly sent you from whatever sharing service, when you 'view' it (or at least open it), this addon will backup it into a specifc folder. (girlfriend specific purpose for instance)
Geek enhanced description:
With this addon, each time an element is stored in the Firefox cache, you can download it following rules based on their URL.
Rules are 'Regular Expressions' which offer enough customization to focus on which elements need to be backup and where.
Each times addon will check cache, it will analyze cached elements to determine if one (or more) element is matched by one of defined rules. If such element is considered as downloadable, tool will save it into the defined download folder, with a given filename expression. (with a foobar2000-titleformatting-like mechanism, output filename can be quite structured (based on filename, date, size, etc)
Since an element located in Firefox cache doesn't always means that a complete file is stored on cache, an element is considered as 'downloadable' if size of such element has not changed since last X cache checking. This allows to download complete files, instead of header or corrupt files (high quality jpeg for instance)
To improve privacy, addon don't trigger another connection to source server of element, element is already stored in cache so we save cached element !
See documentation on wiki : https://sourceforge.net/p/cachedownload/wiki/Home/
Source available at https://sourceforge.net/projects/cachedownload
You're welcome to participate to this project.