Save Page as .. is a free utility tool developed by Tomas Selnekovic for Android devices to save web pages for offline viewing. With this tool, you can easily save a web page, either its desktop or mobile version, with all the images, scripts, and CSS styles to a selected directory. The process is simple, just open a web page in a web browser, share it with the "Save Page as .." application, select a destination directory, and click the Save button.

One of the most useful features of this tool is that it works with every web browser, and it is compatible with tablets and phones. The tool also supports SSL, which means that you can save secure web pages as well. However, it is important to note that this tool is not intended for web pages that require authentication.

It is worth mentioning that Android 6+ users need to turn on the access storage permission manually to access the contents of the internal storage from within the "Save Page as .." application. This can be done by going to the Settings -> Apps -> Save Page as .. -> Permissions and turning on the "Storage" permission.