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Should I use Unpaywall?

Free, legal open-access finder for scholarly papers - unpaywall.org

Worth it. Free, legal, and zero-maintenance — any student, researcher, or librarian hitting scholarly paywalls should install it. Skip it if you want news paywalls bypassed or guaranteed full text of every paper.

Confidence

High. Based on 20+ public sources: official pages, store listings, Reddit threads, and academic reviews. Some source snippets were truncated.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support qualityNo support evidence in sources
  • Security posture

Pricing

Free

Browser Extension

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes
REST APIFree
Data FeedNot published

Best for

  • Researchers and grad students
  • Academic libraries
  • Anyone hitting scholarly paywalls
  • Developers wanting open-access metadata via API

Not for

  • People wanting news or magazine paywalls bypassed — scholarly only
  • Anyone expecting every paywalled paper to have a free copy
  • Teams needing guaranteed full-text delivery — hit rate is partial
  • Buyers wanting a vendor with SLAs — it's a nonprofit project

Gotchas - check before you buy

medium

Commercial Data Feed pricing is hidden; expect a sales conversation

medium

Won't unlock news or magazine paywalls — scholarly articles only

medium

Being folded into OpenAlex; check continuity before building on it

low

Roughly half of papers aren't free, so expect misses

Pros and cons

Pros

  • Fast, free, and legal open-access finder
  • Users read 52% of papers free via the extension
  • Free REST API anyone can query
  • Open database of 31.9M free scholarly articles
  • Cited as a legal alternative to Sci-Hub

Cons

  • Only covers scholarly content; useless for news paywalls
  • Many paywalled papers still have no legal free copy
  • Standalone support has moved to OpenAlex; continuity unclear
  • Data Feed pricing not published upfront

Sources & method

Analyzed 9/20/2026 - 12 sources - No known vulnerabilities found in the sources reviewed.

official x4review x3security x2news x3

Key stats

  • Value for money: 5/5

    Rating

  • Free

    Starting price

  • 12

    Sources

  • Analyzed

  • Value for money: 5/5. Free, nonprofit-run, no paid tier needed
  • Ease of use: 5/5. Install once; works automatically while browsing
  • Feature depth: 3/5. Single purpose: OA link-finding plus API
  • Support quality. No support evidence in sources
  • Security posture: 4/5. Open-source repo, published security page
  • 52% Papers users read free share of papers unlocked by the extension
  • 31.9M+ Database size free scholarly articles indexed
  • $0 Starting price extension and REST API are free
  • Nonprofit Operator OurResearch; now part of OpenAlex

Pricing

Browser Extension

Free

  • Chrome and Firefox
  • Finds free versions automatically

REST API

Free

  • Open to anyone
  • Query by article

Data Feed

Not published

  • Bulk open-access metadata
  • Commercial licensing

Security

No known vulnerabilities found in the sources reviewed.

What users say

Librarians and students praise it as a simple, free, legal way to reach open-access copies of papers.

“I do like Unpaywall.”
Reddit, r/Libraries

Companies that use it

  • University of Hong Kong
  • KU Leuven Libraries
  • Vanderbilt University Library
  • Cornell University
  • United Nations Library
Full analysis

Based on 20+ public sources: official pages, store listings, Reddit threads, and academic reviews. Some source snippets were truncated.

Free, legal open-access finder for scholarly papers. No reason not to install it — unless you need news paywalls unlocked.

Methodology

Based on 20+ public sources: official pages, store listings, Reddit threads, and academic reviews. Some source snippets were truncated.

Sources

  1. Browser Extensionunpaywall.org
    official
  2. REST APIunpaywall.org
    official
  3. Data Feedunpaywall.org
    official
  4. Unpaywall - Chrome Web Storechromewebstore.google.com
    review
  5. Has anyone heard of Unpaywall? : r/Librariesreddit.com
    review
  6. Unpaywall - PMC (Dhakal, 2019)pmc.ncbi.nlm.nih.gov
    review
  7. How Unpaywall is transforming open science (Nature)nature.com
    news
  8. Unpaywall: Legal alternative to Sci-Hubab604.uk
    news
  9. Unpaywall support has movedunpaywall.org
    official
  10. Unpaywall security pageunpaywall.org
    security
  11. Unpaywall extension security overview (GitHub)github.com
    security
  12. An open database of 31,903,705 free scholarly articlesnews.ycombinator.com
    news

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