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.

Yazar
BuiQuocDung1991
Günlük kurulumlar
1
Toplam kurulumlar
16
Değerlendirmeler
0 0 0
Versiyon
2.1
Oluşturulma
19.07.2025
Güncellenme
22.10.2025
Boyut
13,1 KB
Lisans
AGPL-3.0-or-later
Geçerli
Tüm siteler

This userscript enhances webpages by detecting DOI links and showing a popup with free PDF sources when you hover over them. It checks availability across Sci-Hub, LibGen, Anna's Archive, Sci-net, and Google Scholar. The popup is dynamically positioned near the mouse and neatly organized into four rows for clarity. It works on all websites and only activates on mouseover to reduce network load. The script is ideal for researchers seeking quick access to academic papers.
Note:
- in Facebook, please turn on annoyances filters in ublock to use this script