Alt Click Screenshot (NO Data Collection) by Monstaar Add Ons

Alt Click Screenshot lets you capture and save a screenshot with a single gesture — no toolbar clicks, no keyboard shortcuts to memorize, no dialog boxes.
How it works
Hold your chosen modifier key (Alt, Ctrl, or Shift) and left-click anywhere on the page. The screenshot is automatically saved as a timestamped PNG directly to your default Downloads folder. A notification confirms the filename.
Settings (click the toolbar icon)
• Modifier Key — choose Alt+Click (default), Ctrl+Click, or Shift+Click
• Capture Mode — Visible Viewport (what's on screen) or Full Page (entire scrollable page)
Settings are saved instantly with no Save button needed.
Why modifier+click?
It is the fastest possible capture gesture — one hand, one motion, no menus. The extension cancels the browser's built-in modifier+click action (e.g. Alt+click saving a link) so your screenshots fire cleanly every time.
Notes
• Screenshots are saved as PNG with a timestamped filename: screenshot-YYYY-MM-DD_HH-MM-SS.png
• Full Page capture requires Firefox 82 or newer (released October 2020)
• The extension does not run on about: pages or other Firefox-internal pages (browser security restriction)
• All processing is local — no data ever leaves your browser

Alt Click Screenshot does not collect, transmit, store remotely, or share any personal data or browsing information of any kind.