How to take a full page screenshot in Firefox

Native full page capture options

Firefox includes robust screenshot capabilities directly in the browser interface, making it one of the more accessible browsers for this task without installing third-party software. The primary method involves interacting with the page context menu. Simply right-click anywhere on the webpage body and select the 'Take Screenshot' option from the dropdown list. This triggers Firefox's internal screenshot engine, which analyzes the viewport and automatically scrolls through the document to capture everything below the fold.

There is no screenshot button on the toolbar by default. Screenshots is built into Firefox rather than being an add-on, so it is not in the extensions menu either. If you want a toolbar button, open Customize Toolbar and drag the Screenshot item onto the toolbar. Either route opens the same overlay, where you choose between the visible area and the entire page.

Technical limits of Firefox screenshots

Before relying on the built-in tool for professional work, understand its constraints compared to dedicated solutions like full-page-screenshot.

Image Format

PNG (lossless)

Storage Location

Clipboard (default) or local download

Dynamic Content

May cut off if infinite scroll loads during capture

Resolution

Standard DPI; may appear blurry on Retina/HiDPI displays

How to save a full page screenshot

1. 1

   Initiate the capture

   Right-click on the webpage and select 'Take Screenshot'. Wait for the blue selection box to expand and cover the entire document height.

2. 2

   Select the full page option

   The overlay offers two buttons, Save full page and Save visible. Choose Save full page and Firefox captures the whole document rather than the part on screen.

3. 3

   Save or copy

   Click the download icon (arrow pointing down) to save the PNG file to your computer, or click the copy icon to paste it directly into another application.

Common issues and workarounds

Cut-off at the bottom

If the capture stops prematurely, the page likely uses lazy loading or infinite scrolling. Scroll down manually a few times before taking the screenshot to force content to load, or use a tool designed for infinite-scroll pages.

Blurred text on high-res screens

Firefox's native screenshot tool often captures at standard DPI rather than device pixel ratio. This results in blurry text on Retina or 4K monitors. For crisp images, use DevTools or a dedicated extension that respects display scaling.

Missing sticky headers

The native tool captures the visual state at specific scroll points. Sticky headers may appear duplicated or misaligned if the stitching algorithm fails to sync perfectly. Check our guide on sticky header behavior for details.