Unpaywall
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
Unpaywall: Free Access to Scholarly Research Papers
"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.
Add-on stats
Weekly download count: 1,027
Firefox on Android: Yes
Risk impact: Moderate risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- *://*.oadoi.org/*
- storage
Size: 691.88K
Email: su*****@unpaywall.org
URLs: Website ,Privacy policy
Ranking
# 266
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Add-on summary
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spammy, or outdated.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
User reviews
jquery in this extension differs from the one of the same version on the jquery website, specifically code.jquery.com/jquery-3.1.1.min.js
by aWaWa, 2024-12-15
by Firefox user 17823156, 2024-11-29
by shusnuek, 2024-11-24
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