PDF Snatcher от Gunjan Rao

PDF Snatcher cuts through restricted viewers and awkward embeds to get you the file you actually want. Many sites display PDFs in locked-down viewers that disable right-click, printing, or direct downloads — PDF Snatcher detects the underlying document and lets you download it in one click, no workarounds required.
Features:

Detects PDFs even when sites try to block direct access
One-click download from the toolbar
Works across virtually any website
Lightweight — runs quietly in the background until you need it

Whether you're pulling research papers, reports, forms, or manuals, PDF Snatcher gets you straight to the file, every time.