6 Best Chrome Extensions for Researchers
Researchers spend hours in their browser every day, but the default browsing experience gives you almost nothing to work with: no citation context, no way to save references cleanly, no help getting past paywalls. The right extensions change that. Here are six that improve how you find, evaluate, and organize scientific literature.
1. Scite
Citation counts tell you how often a paper has been referenced. They tell you nothing about whether the citing papers agreed, disagreed, or just mentioned it in passing. The Scite extension adds that missing layer. It shows Smart Citation badges directly on paper listings across Google Scholar, PubMed, and thousands of journal websites, breaking down how many citations are supporting, contrasting, and mentioning. Click any badge to open the full Scite report with the actual citation statements.
The extension also lets you highlight any claim on a webpage, right-click, and select "Ask scite.ai Assistant" to surface relevant research. See a claim on Twitter, Reddit, or a news article? You can check whether the science backs it up without leaving the page.
Free on Chrome, Firefox, Safari, and Edge. Works without a Scite account. Over 2 million researchers use the platform.
2. Zotero Connector
The Zotero Connector adds a save button to your browser toolbar that detects papers, books, and other citable sources on the page you're viewing and saves them directly to your Zotero library with full metadata. It works on publisher sites, Google Scholar, PubMed, Amazon, library catalogs, and most major databases. When it detects multiple items on a page (like a list of search results), it lets you select which ones to save. It also grabs PDFs automatically when they're available.
Without it, you're manually entering metadata, dragging PDFs into folders, or copying BibTeX entries by hand. With it, saving a reference takes one click. If you use Zotero, this is the first extension to install.
3. Unpaywall
You find a paper, click the link, and hit a paywall. A free version probably exists somewhere (an author's personal page, a preprint server, an institutional repository) but tracking it down takes time. Unpaywall automates that search. When you visit a paywalled article, it checks for legally available open-access versions and shows a green unlock icon if it finds one. One click takes you to the free full text.
It draws from a database of over 50 million open-access articles across PubMed Central, institutional archives, and preprint servers. Over 5 million people have installed it. For anyone at a smaller institution, working independently, or just tired of hitting "Request access" buttons, it's one of the most practical extensions available.
4. Google Scholar Button
The Google Scholar Button adds a search icon to your toolbar that lets you run a Scholar query from any webpage. Highlight a title or a phrase, click the button, and you get results without navigating to the Scholar homepage. It also shows citation links for the page you're on and supports institutional library access links.
If you search Google Scholar multiple times a day (and most researchers do), having it in your toolbar instead of switching tabs saves more time than you'd expect.
5. Scholarcy
Not every paper deserves a deep read. Scholarcy generates structured summaries of research articles: key findings, study design, limitations, and references. Where generic AI summarizers treat a paper like any other text, Scholarcy is built specifically for academic articles, extracting claims, methods, and citations into a flashcard-style format designed for triage.
For literature reviews where you're screening dozens or hundreds of papers, that kind of structured overview helps you decide what's worth your full attention before committing 30 minutes to reading it. The free version gives you a limited number of summaries. The paid version adds reference extraction and knowledge collections.
6. Notion Web Clipper
For researchers who use Notion for project management, reading notes, or annotated bibliographies, the Notion Web Clipper saves any webpage directly into your Notion workspace with one click. You choose which database or page to save it to, and it pulls in the content and metadata.
Paired with a Notion-based reading or project system, it eliminates the manual copy-paste step between browser and workspace. Most useful if you've already built a research workflow in Notion.
Getting started
If you install one extension today, start with Scite. It adds citation context to every page where you search for papers, requires no setup, and works across Google Scholar, PubMed, and thousands of publisher sites. You'll see how a paper has actually been received by later research, right where you're already browsing.
