Useful browser extensions for PhD students and researchers | ALL FREE

A set of free Chrome (and Chromium-based) browser extensions is positioned as a practical toolkit for speeding up literature searches, organizing notes, and reducing friction when accessing academic papers—especially during the early, messy stages of a PhD or research project. The through-line is simple: fewer tab-hopping chores, faster discovery, and better capture of ideas so researchers spend more time reading and synthesizing instead of hunting.

At the top of the list is Science Research Assistant, aimed squarely at literature review workflows. It lets users choose which publishers and subject areas to search across (including options spanning general science publishers and categories like medicine, biology, chemistry, and social sciences). After selecting targets, a user can run a query such as “flexible organic photovoltaics,” which triggers multiple searches at once and opens results in many tabs—covering sources like Wikipedia, Google Scholar, and PLOS Medicine (along with other configured outlets). The payoff is time savings: the extension automates the “grunt work” of running the same search across multiple engines and destinations.

For capturing and structuring reading notes, Diigo is presented as a browser-based research organizer. It supports bookmarking, annotating PDFs, highlighting screenshots, and saving video screenshots. Its standout feature is an Outliner that turns selected text into draggable bullet points while preserving hyperlinks back to the original source. Users can also attach highlights and comments to web pages, so an idea captured during reading can later be revisited in an organized, reference-linked format. The emphasis is on early-stage synthesis—useful for introductions and literature review scaffolding—rather than long-term project management.

Google Scholar’s browser extension is framed as the obvious companion for discovery. It adds quick access to Scholar search from the current page, surfaces whether a PDF or related materials are available, and provides settings to optimize how results are analyzed.

Lazy Scholar shifts attention to paper triage. When browsing a paper page, it provides a compact toolbar with a citation snapshot, citation counts, Altmetric score, journal-related information, and navigation aids like an abstract/methods outline. It’s designed to help readers jump directly to relevant sections (e.g., conclusions or specific tests) without endless scrolling.

Snippet is recommended for capturing “bits of information” across the web. Users select text on any page, drag to save it into a Snippet dashboard, and retain the source link plus summaries/snips—useful for collecting inspiration during broad, exploratory research.

On access, Unpayable is offered as a legal route to full-text PDFs: a green indicator signals an open-access version is available; otherwise it reports that no legal open-access copy could be found. For situations where access remains blocked, Sci-Hub X is mentioned as a controversial workaround that attempts to open paywalled papers by redirecting to Sci-Hub.

Finally, Forest is included for focus management. It encourages deep work by growing a “forest” while users stay focused for set intervals, with options like block lists (e.g., blocking Reddit) to reduce distractions. The overall message: combine discovery, note capture, access, and focus tools to make research workflows faster and more sustainable.