Some of these tips include using the Greasemonkey together with Slideshare Downloader (tried it, but not working), or make use of the og:image from its page source and use the cURL command (God knows what is that!) an many other hard-to-understand tutorials.
Here is an easy and workable method downloading author-disabled slideShare slides.
Before you start, make sure you have WinRAR archiver. If not, get it from: http://www.rarlab.com/download.htm.
1. Go to SlideShare site
2. Select the particular presentation which you want to download. Click on the title below the picture.
3. Once the page is opened, copy its URL from the address bar above.
4. Go to: https://www.extramaster.net/tools/downloadFromSlideshare/
5. Paste the URL right on the text "Enter a SlideShare link here".
6. Click on the download icon located located at the end of the URL which you have just pasted.
7. It will start downloading. Wait for a while and a box will pop up with the downloaded slides in zip file, as shown below:
8. Set it to "Save File".
9. Click the "OK" button. That's all.
10. Now you should the whole collection of slides downloaded in JPEG format saved in your hard drive as shown below:
