Unpaywall - Chrome Web Store
Item logo image for Unpaywall



231 ratings

Item media 1 screenshot


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.

4.0 out of 5231 ratings

Google doesn't verify reviews. Learn more about results and reviews.

Review's profile picture

Oliver Ruskin (BLISS)Jun 2, 2024

I was looking for a specific article that I had read some while ago and got to access it for free... when I tried recently it was all behind a paywall! This extension really helped me, and even if it can only get 50% of articles, or just the ones that are out there somewhere for free, it's really handy.

4 out of 5 found this helpful
Review's profile picture

Fernando Manríquez V.Apr 20, 2024

total garbage. Sci hub is way better

14 out of 30 found this helpful
Review's profile picture

hendrik vanvelkApr 13, 2024


1 out of 3 found this helpful


  • Version
  • Updated
    July 30, 2021
  • Size
  • Languages
  • Developer
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.


Unpaywall has disclosed the following information regarding the collection and usage of your data.

Unpaywall handles the following:

Website content

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes


For help with questions, suggestions, or problems, visit the developer's support site

Google apps