You can see YouTube tags in the <meta name=”keywords” content=”[keywords]”> field within the view-source code for any video.
On any given video, you can right-click on the page and choose to “View Source”
Once you have the page source open, just CTRL-F for the “keywords” meta tag – and get the tags that the author used.
That’s simple enough.
But what if you want to research dozens if not hundreds or thousands of YouTube videos?
That’s where web scraping comes in.
The good news is that since those tags are consistently within the meta keywords field, you can easily scrape them with off the shelf scraping software like Screaming Frog.