谷歌浏览器插件Unpaywall 免费下载论文文献全文-（Chrome插件）谷歌浏览器插件网

谷歌浏览器插件Unpaywall 免费下载论文文献全文

Unpaywall是一款免费文献下载的扩展插件，由非盈利机构Impactstroy开发，Unpaywall还是一个集合近2000万个免费学术文章的数据库。安装Unpaywall插件后，页面右侧会显示一把小绿锁，点击即可获取，撵走科学道路上的拦路虎，如果是小灰锁就不能下载，还没有匹配的资源。

超过1,000,000篇SCI论文（不用辛苦一个一个验证是否免费可用）；全部来自免费公开资源（永远不用担心某天被封掉）；无需注册，即安即用！但是只接入公开免费论文资源，覆盖面较少（你想要的不一定都有~）。

Legally get full text of scholarly articles as you browse.
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.