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Paper links to free PDFs

Checks for free PDFs from Google Scholar, Sci-Hub, LibGen, Anna's Archive, Sci-net, Semantic Scholar, Unpaywall, Openrxiv (medRxiv/bioRxiv), and ArXiv when hovering over a DOI link.

بۇلارنىڭ ھەممىسى بۇ قوليازمىنىڭ نەشرىلىرى. پەقەت كود يېڭىلانغان نەشرىلىرىنى كۆرسىتىش.

  • v2.1 2025-10-22

    - Updated for Openrxiv (medRxiv/bioRxiv)
  • v2.0 2025-10-22

    - Added Arxiv
    - Moved variables to functions check
  • v1.9 2025-10-22

    Fixed for Openrxiv (medRxiv/bioRxiv)
  • v1.8 2025-10-21

    -Removed CORE, and EuropePMC
    -Added OpenRxiv
  • v1.7 2025-10-12

    - popup now updates instantly when hovering over a new link
    - added springer links
  • v1.6 2025-08-05
  • v1.6 2025-07-28

    Improved more accurate EuropePMC
  • v1.5 2025-07-25

    Improved getDoiFromLink to extract and clean DOI more reliably
  • v1.4 2025-07-25

    -Add SemanticScholar, Unpaywall, Core, EuropePMC to pop-up
    -Adjust 3 results in a row
  • v1.3 2025-07-19

    Add keyword filtering for DOI extraction.
  • v1.2 2025-07-19

    - Added Google Scholar to popup.
    - Reorganized popup layout into 4 rows
  • v1.1 2025-07-19

    - Expand to all websites which contain DOI link
    - Show DOI in popup
  • v1.1 2025-07-19

    - Expand to all websites which contain DOI link
    - Show DOI in popup
  • v1.1 2025-07-19
  • v1.0 2025-07-19