
Unpaywall by Impactstory team
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
Extension Metadata

When you view a paywalled scholarly article, Unpaywall automatically checks its open database of 16 million legal, open-access articles. If there's an open version somewhere, you'll see a green tab on the article. Click the tab and read for free, legally!
Unpaywall is a free, open-source project from Our Research, a nonprofit dedicated to making scholarly research more open, accessible, and reusable.
Unpaywall is a free, open-source project from Our Research, a nonprofit dedicated to making scholarly research more open, accessible, and reusable.
Report this add-on for abuse
If you think this add-on violates Mozilla's add-on policies or has security or privacy issues, please report these issues to Mozilla using this form.
Please don't use this form to report bugs or request add-on features; this report will be sent to Mozilla and not to the add-on developer.
- Add-on Links
- Version
- 3.94
- Size
- 675.64 KB
- Last updated
- 17 days ago (Feb 10, 2021)
- License
- MIT/X11 License
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
Made the Unpaywall icon an anchor element for better accessibility and to enable URL preview.
- There are no ratings yet
- There are no ratings yet
- There are no ratings yet
- There are no ratings yet
- There are no ratings yet
- There are no ratings yet