Unpaywall

Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
What is Unpaywall?
"Unpaywall" is a Firefox extension designed to provide users with access to millions of legal, open-access research papers. When a user encounters a paywalled article, Unpaywall searches its comprehensive database for an open version, offering the user the opportunity to read it for free. A project of the non-profit, Our Research, Unpaywall is dedicated to making scholarly research more open, accessible, and reusable.
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Add-on stats

Version: 3.98 (Last updated: 2021-07-28)
Creation date: 2017-03-04
Weekly download count: 1,298
Firefox on Android: Yes
Risk impact: Moderate risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
Permissions:
  • *://*.oadoi.org/*
  • storage
Size: 691.88K

Ranking

# 268 ▲ 1
Other rankings
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Other platforms

Unpaywall (v3.98)
4.02 (244) 800,000
Not available on Edge
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Add-on summary

Analyze keywords

When you view a paywalled scholarly article, Unpaywall automatically checks its open database of 16 million legal, open-access articles. If there's an open version somewhere, you'll see a green tab on the article. Click the tab and read for free, legally!

Unpaywall is a free, open-source project from Our Research, a nonprofit dedicated to making scholarly research more open, accessible, and reusable.

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • It does exactly what it says
  • Extensive repertoire of academic papers
  • Very useful addon
  • Saves hours of research time
Cons
  • Doesn't work on certain pages
  • Functionality reported to not work for some users
Most mentioned
  • Useful for accessing academic papers
  • Facilitates research
  • Issues with page compatibility
Recent reviews
by Firefox user 14966199, 2024-10-30
How I can withdraw my 6‎‎2‎‎8‎‎0‎‎ USDT from О‎‎К‎‎X wallet to a‎n‎‎o‎t‎‎h‎er wallet? My О‎‎К‎‎X p‎h‎‎r‎a‎‎s‎e w‎o‎‎r‎d‎‎s:‎ (g‎e‎n‎r‎e o‎pi‎n‎io‎n i‎n‎ju‎ry in‎v‎e‎st t‎o‎m‎o‎rr‎ow h‎u‎b c‎o‎m‎pa‎n‎y to‎rt‎oi‎se so‎u‎nd‎ fro‎g do‎n‎or ou‎tdo‎or)
by Firefox user 18645962, 2024-10-19
by johnnyfrog, 2024-10-06
View all user reviews

Add-on safety

Risk impact

Unpaywall requires a few sensitive permissions. Exercise caution before installing.

Risk likelihood

Unpaywall has earned a good reputation and can be trusted.

Upgrade to see risk analysis details