# Unpaywall - Free Article

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

Canonical page: [https://chrome-stats.com/d/unpaywall-free-article](https://chrome-stats.com/d/unpaywall-free-article)

## Overview

- **ID:** `unpaywall-free-article`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** OpenAlex
- **Daily users:** 22
- **Weekly downloads:** 9
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 3.99
- **Last updated:** 2026-01-02
- **First published:** 2025-12-30
- **Size:** 680 KB
- **Data as of:** 2026-06-26
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/unpaywall-free-article/)

## Description

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.

## Permissions and access

### Permissions

- `storage`
- `declarativeNetRequest`

### Host permissions

- `*://*/*`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension is not longer available in the store

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/unpaywall-free-article)