Is there an analogue of vidIQ, but not for YouTube videos, but for ordinary text blogs, regardless of the engine?

Question

Search Engine Optimization

I am looking for some kind of browser plugin similar to https://chrome.google.com/webstore/detail/vidiq-vi... in order to select keywords, hashtags and the like when writing a blog post.
Not for wordpress. We need a universal one so that it can be used when writing a post on any blog engine.