Nice plugin

Hello!

But I would add a link title attribute for better SEO

Please, show example, what you mind?

Links to chapters in table of content could have title attribute in HTML – like links to similar articles below this content: https://wizerunekkobiety.pl/blog-lifestylowy/uroda-kosmetyki/lampa-do-hybrydy-led-czy-uv-jak-wybrac/

Hm, why attr title in anchor links? Has articles with this recommendation?

Well, there are different opinions on it, but I think similar to this: https://seo-hacker.com/lesson-21-anchor-title/. Maybe it is not so important, but if the plugin could give the possibility on/off HTML title It would be great.

There is no consensus on the impact of attribute title on SEO.
But even if it does, you suggest duplicating acnhor of link to attribute title of link. This may increase spam of text.