Download File Link Copier by Byronic

What gets copied (configurable via the toolbar popup):
Download page link (default) — the URL of the page you downloaded from, falling back to the file's own URL if no referrer exists
Direct download link — the file's own URL
Both — page link and direct link, one per line
Off — copies nothing

Other features:
A toolbar popup lets you switch modes, toggle notifications, and manage exports — changes save instantly via browser.storage.local, no reload needed
It keeps a running log of the last 500 copied links
You can export that log as a .txt file (with a custom title) showing each downloads file name, page link, and direct URL
An "auto-export" option triggers a Save As dialog after every single download, exporting the full up-to-date history each time