Download youtube videos with Tampermonkey

Tampermonkey extension allow user to run custom scripts, and saveform.net provider a script to download from youtube.

First, install Tampermonkey

Open https://tampermonkey.net/ and install the extension for your browser.

Second, install saveform.net helper

Open https://en.savefrom.net/userjs-setup.php and install the script.

Now you can download any youtube videos as you like.