ExplainThis

ExplAInThis is a browser extension built around a simple IDEa: when something on a page is unclear, you should be able to get an explanation without breaking your reading flow. Rather than copying text into a separate chatbot window, you highlight it and ask for a plain-language explanation in place. The result is a Lightweight study and research aid that sits on top of the pages you already visit.

What it does

The extension watches for text you select in Chrome and offers to explain it. You can ask for a simpler restatement of a dense paRAGraph, a DeFinition of a term, or background on a reference you do not recognize. It is also positioned as a summarization helper, so longer articles and documents can be condensed into shorter overviews. Because it runs inside the browser, it works across many sites rather than being tied to a single content platform.

Key capabilities

• In-page explanations: select text and request an explanation rendered in a popup or side panel.
• Summarization: condense articles or pages into shorter, more digestible summaries.
• Concept lookup: get quick context on technical, academic, or unfamiliar terminology.
• Reading-friendly workflow: stay on the original page instead of switching between tabs.
• Simple interface: a minimal extension UI aimed at fast, low-friction use.

Who it is for

ExplainThis suits students working through dense readings, researchers scanning unfamiliar papers, and Professionals who encounter jargon in documentation or reports. It is also useful for anyone learning in a SECond language, where a quick paraphrase of a difficult sentence can make the difference between moving on and getting stuck. Casual readers who only occASIonally need an explanation can use it as a lightweight companion to normal browsing.

How to get started

1. Open the Chrome Web Store and search for the extension by name.
2. Install it and pin the icon to your toolbar for quick access.
3. Visit any page, select a passage, and trigger the explain ACTion.
4. Review the explanation in the popup, and try summarizing a full article to see how it handles longer input.

Because the tool relies on a rEMOte language model, availability, supported browsers, and feature depth may vary over time and by region. Confirm current compatibility on the official site before relying on it for coursework or professional work.

Pricing and access caveat

ExplainThis has been presented as a free-to-use extension, but usage limits, account requirements, and any paid tiers can change without notice. Explanations generated by an AI model should be verified against primary sources, especially for academic, legal, or medical topics. Access from certain regions may require a VPN, so check availability from your location before installing.