Webpage to PDF Autor: Denim

A Firefox extension that saves any webpage as a PDF in one click — a counterpart of the Convert webpage to PDF extension for Chrome.
Features

One-click save from the toolbar popup — the file name is taken from the page title
Vector PDF via Firefox's print pipeline: selectable/searchable text, working links, original layout and images
Quick save: right-click the page → Save page as PDF, or press Alt+Shift+S
Options (remembered between sessions): portrait/landscape, paper size (A4/Letter/Legal/A3), scale 30–200 % with shrink-to-fit, margins, background graphics, headers & footers (title, URL, date, page numbers)
Light/dark UI that follows your system theme

Runs locally — no external servers, no data collection