Browser Cache Files and web archives
Extract and View Cache FilesBrowser caches can contain all file formats, and with File Juicer you can extract most of it. Pick the cache you wish to extract and view the results in Finder afterwards.
Safari's cache files have had the extension .cache, but with Safari 8 (an likely earlier) they are extensionless files named with a UUID (Universally Unique Identifier)
File Juicer extracts the contents of web archives.
Safari's web archive has the extension .webarchive and everything is extracted for these files.
FireFox use .dat for cache and saves web archives as separate files in a folder.
Google Chrome strips extensions from files in the cache, but File Juicer can extract the files anyway.
Opera stores the files as is, which means you can dig through the cache with Finder, but to get a quick overview File Juicer makes index files and sorts extracted images according to type and it will be much easier to browse through.
Internet Explorer use .waf for cache files and 'WAFF' files as web archives. It has the added feature that you can download a web page and follow links up to 5 levels deep, and download those pages too. File Juicer can extract the images and html from this file.
Where to find the Cache files of Safari, Firefox and other Applications?The location of cache files is in your ~/Library/Caches/ folder. Shortcuts to the most common browser caches are in File Juicer, but if you need to extract from other applications which use the same caching mechanism as Safari you can find them here, and drag them onto File Juicer.
FLV files from YouTube or other sites.Flash video files are not cached in the normal browser caches, but the Flash Plugin puts them in the hidden "temporary items" folder, which you can also "juice" directly from File Juicer. The files are there only temporarily, and they are cleaned up automatically when you leave the web page or start another video clip.
You can also get to these files directly with Safari's "Activity" menu item.
Recover lost HTML from browser or Google cachesIf write HTML and by accident delete your work, you may recover the files if you test your pages in a web browser.
If the page you are editing has been indexed by Google, you can also find it there. Type in the URL for your page in the Google search field and follow the "Show Google's Cache" link.