Unpaywall

Download / Install How to install an extension

CRX id

iplffkdpngmdjhlpjmppncnlhomiipha

Description from extension meta

Legally get full text of scholarly articles as you browse.

Image from store Unpaywall

Description from store 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.

Latest reviews

(2023-11-06) Sergio N. Bonacina: una mentira ya lo desinstalo
(2023-10-18) Jo me: Works awesomely
(2023-10-16) Mari Leigh: I love it. It can't always find free versions of research papers/journals, which is annoying, but most of the time for me it can. As much as I'd like to support the researchers and buy their research journals/papers, I cannot pay upwards of $40USD for a single article. I definitely suggest if you are a student who needs to use credible sources for research papers, I highly recommend this app. Like I said, it can't always find free versions, but it's worth a try :)
(2023-10-09) Natanael Leitão: Works only on articles that are already free.
(2023-09-20) Adrian Augustus: **Note its for scientific journals not mainsteam media like Wall Street Journal.** The extension name could perhaps be a little less generic. As for use in journals I typically access - this works, rarely. To concur with some of the feedback here - only occasionally does it procide access to a pdf, sometimes it fails when a pdf is available almost at the top of a google search, sometimes a bit more digging is required. Nice idea though.
(2023-09-15) Mysan trope: Not working.
(2023-08-07) Andrzej Rutkowski: It's kind of useful, but sometimes it fails to detect the available full versions of articles. I mainly spend my time on Pubmed and sometimes there's a paper there with a clear link to the full free version of the article on Pubmed central, but Unpaywall still says that there is no free full version of this paper available. When the Unpaywall padlock icon is open and green - yes it is useful to be able to just click it and go directly to the free full version. But when the padlock is grey and locked, I still do my own search for a free version (often successfully), but I thought that this searching on my own was what this extension was supposed to save me time on.
(2023-06-02) Atharva Kulkarni: Best
(2023-05-23) Fabien cmoi: faut s'abonner ou pas ? en tout cas ca marche pas
(2023-05-03) Leniero: Funktioniert bei keiner der getesten Seiten
(2023-01-11) Lee B: Doesn't work.
(2023-01-07) David Linder: Only tried it on one article, worked first time, gave me the full article without paying. So super happy, thanks.
(2022-11-18) Alkaris: This extension does NOTHING on sites like New York Times, or Washington Post that all use paywalls.
(2022-11-01) ZeyTac: not working.
(2022-10-23) Alex: Won't work on vast majority of articles unless they're already open-access, which defeats the purpose of this extension. Basically does little more than being a PDF downloader.
(2022-09-28) MeeM: About as useless as a glove with 4 fingers
(2022-09-22) Ektor: No sirve en un articulo de la Universidad de Cambridge desinstalando
(2022-08-31) Oliver Jay Aaby: Ikke hvad jeg forventede - men fint koncept.
(2022-08-25) Nexsus: It just sends you to pdfs
(2022-08-15) Ahmed Kamal Hasin: It doesn't work for all paywalled articles. If you're lucky you'll get some of them. Still worth a try if you're a student and looking for secondary sources for your assignment or paper.
(2022-07-19) Trav (Barter 16): Does not work on news articles. Useless. Don't care for research papers which are ALREADY FREE.
(2022-06-22) Joachim Mirwald: bei mehreren Seiten getestet und kein ging
(2022-06-09) Galaxyz Fold2: looks like no longer work in 2022
(2022-03-23) 张huayu: 现在2022年了，但2020年的文章还是看不成，可能是由于学科问题吗，感觉sci-hub会好些
(2022-03-21) Evelyn Taronas: i did research and it doesn't work at all, it have paywall tho but i did not see the lock icon the side of my desktop
(2022-02-18) Nash 52: Ja richtig
(2022-01-15) Zuzana Kocsisova: Works so well! Super easy to use.
(2022-01-07) Sky Jaap: Makes it easy to find the pdf version of an artikle without clicking though several links.
(2021-11-23) Mohamed Sahl: I only downloaded hoping that it would crack past "theathletic" dot com articles. but seems it's hard for you :(
(2021-11-16) Yan Ortiz Gutierrez: no funciona en scribd
(2021-10-01) alessandro vergoni: SEXOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
(2021-09-22) Matias Solorzano: He probado la extensión en varios sitios y esta solo funciona en páginas específicas, inusualmente recurrida
(2021-09-02) e a: 很好用
(2021-08-21) Floyd Romanoff: Downloaded to find critical article for a paper. Instantly found it. So easy to use, just perfect.
(2021-08-04) Emmanuel Grant: It Didn't work! . I tried it on different sites and it didn't work on any.
(2021-07-28) Alejandro Toloza: No funciona con Scribd, al parecer con muy pocos sitios funciona
(2021-07-21) NIVΚΓΔ: Worked once....for a free article out of 20 articles I tried, redundant.
(2021-05-04) Paul S.: This app did not help me get pass paywalls at all. This app gives me one of two things, it either redirect me to a pdf file that was useless or it did not give me an option to bypass a paywall at all.
(2021-04-27) Wesley: Doesn't work on New York Times, so it's pointless
(2021-04-20) Liv S: Not bad. Just recently installed and have noticed that there were a few papers that had the green leaf on the side. I'll continue using it and see how it goes! Thanks :)
(2021-03-24) Marijus Lapinskas: does not work with vz.lt
(2021-03-23) hmoh-: I just wanted to know if it slows down performance of the device you get it on in any way?
(2021-02-23) Alex Montero: First paywall breaker that actually worked for me, thanks!
(2021-01-25) Julian Vargas: No funciono con The Economist
(2021-01-10) Jay Guerrier: An incredible asset this past semester for me. I was able to access way more research than I would have been on my own and it definitely reflected in my grades!
(2020-12-10) Anass: Amazing
(2020-11-27) Matthew Brooks: It actually works... So far it's 1 for 1. Even if it doesn't work for any other scholarly articles it was still worth the download. Fantastic!
(2020-10-29) Кирилл Фролов: I would like it to open unpaywalled article ajacent to the current tab. Not after the rightmost tab.
(2020-10-11) Sergey Nabrusko: super!
(2020-08-19) Kaitlyn Krenik: I downloaded to try to unlock Wall Street Journal. Doesn't work. Also doesn't work on any psychology articles I looked for.

Statistics

Installs

800,000

Links

Extension in store

Web page