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.

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Add-on stats

By: Impactstory team

Daily users: 72,051

274

Rating: 4.35

(240)

Version: 3.98 (Last updated: 2021-07-28)

Version code: 5272498

Creation date: 2017-03-04

Weekly download count: 1,151

Firefox on Android: Yes

Risk:

Permissions:

*://*.oadoi.org/*
storage

Size: 691.88K

Email: su*****@unpaywall.org

URLs: Website ,Privacy policy

Full description: See detailed description

Ranking

# 263 ▲ 1

Other rankings

#15 in Feeds, News & Blogging

#22 in Search Tools

#30 in Social & Communication ▲ 2

#2 in legal keyword 2

#20 in article keyword 20 ▼ 1

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Other platforms

Unpaywall (v3.99)

800,000 4.04

(254)

Not available on Android

Not available on Edge

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

User-friendly interface
Helpful for accessing academic papers
Gratitude expressed by some users for the add-on

Cons

Doesn't work consistently on various pages
Only supports certain types of documents
Misleading functionality suggestions
Issues with the icon not being clickable

Most mentioned

Non-functionality on specific websites
Limited document types
User frustrations over the add-on's utility

User reviews

by ramiel, 2025-03-10

by 远离中共邪教快退出党团队, 2025-02-15

Doesn't work, can't click the icon.

by EdTheShed, 2025-02-04

View all user reviews

Add-on safety

Risk impact

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

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Unpaywall has earned a good reputation and can be trusted.

Risk likelihood analysis details

Medium This extension has medium user count. Unpopular extensions may not be stable or safe.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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