extension ExtPose


CRX id


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

  • (2023-01-11) 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) Travis: 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
  • (2021-09-22) 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 (LapiusGames): 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.
  • (2020-08-02) Zot 1: It's awesome, no need to spend time trying to find a free pdf. It even find stuff I'm not able to find when I take the time. Very impressive. Thank you so much for sharing your time and talents!
  • (2020-02-11) Hemanth Reddy: I've installed less than an hour ago, and I'm in love with it already!!
  • (2020-01-27) Ross Mounce: This even outperforms Sci-Hub sometimes! Excellent tool.
  • (2019-10-18) David Brotman: Not working for nytimes.com
  • (2019-10-14) Nick Westgate: Love it! It worked on all the papers I tried today. Victory for the non-medical-professional amateur-armchair-scientist geeks. Thanks so much!
  • (2019-09-24) Federico Leva: Ottima estensione per trovare facilmente i PDF durante l'uso normale, in qualunque sito ci si trovi. Non devo più lanciare una caccia al tesoro ogni volta che visito un editore o archivio istituzionale per capire dove sia il pulsante che porta all'eventuale PDF! Il 50 % delle pubblicazioni scientifiche recenti è disponibile e facilissimo da scaricare grazie a tutte le università che hanno messo a disposizione le opere in accesso aperto verde.
  • (2019-08-28) Awair80: Doesn't work....
  • (2019-07-14) Neil Thawani: A simple Google Scholar search revealed free instances of a semi-popular article referenced in a tech news outlet that the extension did not locate. This extension is not worth downloading.
  • (2019-07-02) Tony Wilford: Great Extension! Keep fighting the struggle for freedom of free information!
  • (2019-06-01) Iris: Not working. Nothing shows.

Latest issues

  • (2021-07-15, v:3.97) пфьуч_ннее ннее: Does is it work on this website
    does it work on this website https://www.cgfasttrack.com/library?utm_source=youtube&utm_medium=link&utm_campaign=BFT2 I need it but I dont have money rn
  • (2021-05-22, v:3.94) maria monfort: unpaywall
    can unpaywall read bloomberg?
  • (2021-05-10, v:3.94) arta kroni: Sage pub
    Does this work on sage pub?
  • (2021-03-20, v:3.94) Alex W.: Read and change data on all websites
    This is overreaching for an extension that should need nothing more than the URL. I don't need a special button injected into every web page. Just let me click the extension button when I want to check for an open access article.
  • (2020-11-28, v:3.92) D O: its not working on https://simplywall.st/
    Hi Kindly try making it work on https://simplywall.st/stocks/us/automobiles/nasdaq-tsla/tesla the whole website. it would be very helpful Thanks and Regards
  • (2020-10-29, v:3.91) Кирилл Фролов: Problem with tab opening
    I would like it to open unpaywalled article ajacent to the current tab. Not after the rightmost tab.
  • (2020-04-15, v:3.91) Jan L.: Challenge
    Hello site idnes.cz is not working even with your extension. Want to take a challenge? I tried what Google offered to get through paywall and nothing (even your software)
  • (2019-08-24, v:Unpaywall 3.89) Aldo d'Alessandro: funzionamento
    non capisco come funziona
  • (2019-07-22, v:Unpaywall 3.88) Morgan Movies: Cannot install extension from Chrome Store
    When I go to add the extension it fails and this error pops up. Package is invalid. Details: 'Could not load icon 'img/icon.png' for browser action.'.
  • (2018-12-04, v:Unpaywall 3.87) reader
    Compare the latest Top 500 list with the Top 500 Green List of HPC systems. Discuss a few top winners and losers in terms of energy efficiency in power and cooling costs. Reveal the green energy winners’ stories and report their special design features, packaging, cooling, and management policies that make them the winners. How different are the ranking orders in the two lists? Discuss their causes and implications based on publicly reported data
  • (2018-09-02, v:Unpaywall 3.77) Charles Williams: Read and change data
    Why does it need to read and change data on websites visited? What exactly does this mean and does this apply to every website visited or only to the websites that contain the articles and papers being accessed? This is a question that has been asked many times before but has yet to be answered. Please answer as clearly/detailed as possible. Thanks.
  • (2018-03-06, v:Unpaywall 3.76) Can you kick off this
    Can you block me from using this it has been interfering with other things
  • (2017-09-15, v:Unpaywall 3.0) NPAVisuals Nicholas Pearson Associates: No longer working
    No longer pops up on screen when viewing a journal article listing. Seems others are seeing the same thing. Shame, I liked this extension.
  • (2017-09-15, v:Unpaywall 3.0) Peter Jones: OSX, error in Chrome, was OK
    Error in response to storage.get: ReferenceError: k is not defined at Object.callback (chrome-extension://iplffkdpngmdjhlpjmppncnlhomiipha/unpaywall.js:715:53) at runWithSettings (chrome-extension://iplffkdpngmdjhlpjmppncnlhomiipha/unpaywall.js:715:27)
  • (2017-08-20, v:Unpaywall 2.4) Not working at all
    Acer Chromebook 11 running Chrome OS ver. 60.0.3112.101. Installed fine, but clicking on the little tab takes me to an error page.
  • (2017-08-03, v:Unpaywall 2.4) David Hopgood: Unpaywall doesn't work in Chrome
    I tried installing Unpaywall in Chrome - nothing happened. Please advise. David Hopgood
  • (2017-07-03, v:Unpaywall 2.3) Dispense with the huge button
    Having a huge big green thing on the side of the screen when I read articles online like at PubMed is a huge distraction. You should give the option to only light up the mini icon on the toolbar and get rid of it on screen.


656,489 history
4.1 (201 votes)
Last update / version
2021-07-29 / 3.98
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