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Quick Look

Unpaywall helps you legally access full-text scholarly articles directly from your browser.

AI Overview

Who is this for?

Researchers, students, and academics who need to access scholarly articles.

Key Features

  • Automatic search for legal full-text PDFs
  • Highlights available articles with a green tab
  • Focuses on author-posted and publisher-authorized manuscripts
  • Provides access to 'Green Open Access' versions

Reviews Analysis

Overall Sentiment

Mostly Positive

Users generally find Unpaywall very useful for accessing scholarly articles legally and easily, though some experience occasional availability issues.

Note: AI analysis focuses on the substance and recency of reviews, which may differ from the overall store rating.


What Users Love

  • Finds legal full text of articles.
  • Easy to use with a convenient tab.
  • Saves time and aids research.

Points to Consider

  • × Occasionally cannot find an article.
  • × Some users report it's unavailable.

Official Description

From the Developer


Get full text of scholarly articles as you browse. When you view a research article, Unpaywall automatically looks for a copy in our index of 20 million free, legal fulltext PDFs. If we find one, click the green tab to read the article.

Unpaywall points you to legal, author-posted manuscripts that are hosted on university and government web servers. We are pointing to versions that have been posted with the full and explicit authorization of the publishers themselves.

These free, author-posted manuscripts are often called "Green Open Access" and are a longstanding and completely legal part of the scholarly communications ecosystem. The majority of scholarly journals permit authors to "self-archive" their papers on university and government web servers. It's these legally self-archived papers that Unpaywall helps users find. Any papers posted outside of publisher permissions are NOT included in our index.

Your extension? Let us know if we can update or correct anything!

Key Info

  • Rating:
    4/5.0

    (269 ratings)

  • Users:800,000
  • Version:3.99
  • Updated:Jan 08, 2025
  • Developer:Visit Website →

Stats from Chrome Web Store