Adding multiple keywords at once

Is there a way to fill in multiple keywords at once into the submissions form for them? For example if I have a list of the keywords I want to add separated by commas like this: (keyword1, keyword2, keyword3, keyword4, keyword5) Is there a quick way to add thoose into their submission forms without copy and pasting every single one of them separately? I guess it would be possible with a userscript but I have no experience with writing thoose or if they even would be allowed to be used on imdb.