Mark R

Mark R is an AI‑powered browser extension that lets you explore the text you highlight on any webpage. When you select a portion of text, a small icon appears; clicking it opens a chat field that can answer questions about the selected excerpt or the page as a whole, all within the same window.

To use the tool, choose a sentence or paragraph on a site, such as a news article, an academic paper or a marketing page, and click the icon. In the chat window you type a question, like “What does this term mean?” or “Summarise this paragraph.” Mark R pulls the surrounding content on the page so that its responses are grounded in full context. The assistant returns a short answer, a paraphrased summary, or a list of related points, depending on the query. You can ask follow‑up questions and the conversation stays linked to the same highlight, which is handy when you want to dig deeper into one section before moving to another.

The add‑on is useful for people who read online for work or study. Students can clarify a dense definition while reviewing a research article; writers can quickly generate an executive summary from a series of highlighted sections; marketers can ask for keyword themes from a blog post. The tool is not designed for bulk document processing or for offline files; it explicitly operates on the content that appears in the browser. Because it relies on the highlighted text and the page's context, it performs best on content that is structured and not heavily protected by paywalls or dynamic scripts.

Mark R highlights the entire context of the webpage, not just the selected part, to produce answers that reflect the article's overall tone and narrative. When you ask for an “Executive Summary,” the assistant will outline key points and organize them into a concise paragraph. If you request a “Slide Presentation,” it will suggest slide titles and bullet points that can be copied into a presentation deck. For research, it can pull out definitions, key findings, and reference suggestions.

The tool offers a conversational approach to web browsing that can replace the need for switching tabs or copying text into a separate note‑taking app.