Unpaywall - Free Article

Name: Unpaywall - Free Article
Rating: 5 (2 reviews)
Author: OpenAlex

By: OpenAlex

Get full text of scholarly articles as you browse, free and legally

This add-on was removed from Firefox Add-ons Store on 2026-06-26

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Features & Capabilities

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.

This extension is developed using the latest MV3 specification. Please report any issues to us promptly.

User Growth & Download Statistics

Add-on

By:

OpenAlex

Daily users:

Rating:

5.00

(2)

Version:

3.99 Last updated: 2026-01-02

Version code:

6109185

Creation date:

2025-12-30

Risk:

Permissions:

Host permissions:

*://*/*

Content scripts matches:

<all_urls>

Size:

680.00KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-26

Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

OpenAlex

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/unpaywall-free-article/

Is Unpaywall - Free Article Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Unpaywall - Free Article 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.
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Unpaywall - Free Article may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.