Wiseone has a lot of features to help you read more productively. You can use Focus to look up unfamiliar words, Cross-check to find sources that support a point of view, Summarize for a quick overview, and Explore to find related articles. Wiseone works in many languages and with PDF files, too, so it's good for a variety of situations.
Another good choice is Reader Mode. This Chrome extension strips out website distractions, ads and other clutter to present a clean reading interface. You can customize font styles, add notes and listen to text read aloud. It also comes with special fonts and a dyslexia ruler for people with dyslexia.
If you want to go the AI route, BLUF is a good option. It offers answers, summaries and explanations of websites through an "Ask," "Summarize" and "Explain" interface. BLUF is a browser extension for Chrome and Firefox that runs your query through OpenAI's technology but doesn't collect any data.
Last, Gist AI offers one-click summarization for websites, YouTube videos and PDFs using ChatGPT technology. That can be helpful for students and professionals who need to get a handle on information without getting buried under a pile of documents. Gist AI doesn't collect any data beyond the summarized content.