With only 2 simple ways you can download every video watching on YouTube without adding any plug-in or extension into your broswer. With just adding 2 simple words to the URL you can download your video as easy as it does.
The first way is adding "mp4" after YouTube URL of the video you want to download.
The second way is adding the simple word "kiss" before YouTube.
Each of them links you to another site you will get downloaded your video from.
Just note that you need to set up if you want to use the second way! So, let you be launched with adding "kiss" to get the temporary tool. This is an easy-to-use tool you need to install, so you can download videos from YouTube. The tool also allows you to convert your YouTube videos to other formats.