YouTube tags are useful & helpful for finding any video with just in single search or a few minutes. Add tags or keywords in your YouTube video to help viewers reach or find your video content.
Tags useful for your video content are commonly misspelled. In other words, tags play a minimal contribution to Video SEO.
In any YouTube video only a 500-character limit and a 5000-character description. For exceed, this YouTube not allow.
Login to your YouTube studio, if you are required to add tags to an uploaded video click on the details icon. In Video details scroll down click on show more add your tags or keywords in the tags textarea. Tags are separated by a comma.
Scroll Down, and in Tags section in Textarea insert your video tags.