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Firefox can capture a whole webpage, a single element, or the visible viewport using built-in developer tools. For a full-page capture, enable the screenshot button in Developer Tools settings; for more control over filenames, delays, selectors, and clipboard output, use the Web Console’s :screenshot command.

Choose the Firefox capture method

What you need Firefox method Key detail
Entire webpage Developer Tools screenshot button or :screenshot page.png --fullpage The toolbar button must first be enabled.
One page element Inspector > right-click the node > Screenshot Node, or use :screenshot --selector The Inspector route captures the selected node directly.
Visible viewport Responsive Design Mode camera button Captures the viewport rather than the full page.
Named, delayed, or clipboard capture Web Console :screenshot Offers filename, delay, device-pixel-ratio, and clipboard options.

Open Firefox Developer Tools

Open Tools > Web Developer > Web Developer Tools, or use the keyboard shortcut for your operating system:

  • Windows or Linux: Ctrl+Shift+I or F12
  • macOS: Cmd+Option+I

Opening Developer Tools this way targets the active tab. Firefox’s interface labels and shortcuts can vary with release or user configuration.

Capture the entire webpage with the screenshot button

  1. Open Developer Tools for the page you want to capture.
  2. Open Developer Tools settings.
  3. Under Available Toolbox Buttons, enable Take a screenshot of the entire page. The button is not enabled by default.
  4. Click the screenshot button in the Developer Tools toolbar. Firefox saves the image to its Downloads directory.

Capture a single element in the Inspector

  1. Open Developer Tools and select the Inspector tab.
  2. In the HTML pane, locate the element you want.
  3. Right-click its node and choose Screenshot Node.

Firefox captures the selected node and saves the image to Downloads. This is a direct option when you can identify the element in the Inspector.

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Use the Web Console for more capture options

Open the Web Console and enter a :screenshot command. For example, to save a full-page image with a chosen filename:

:screenshot page.png --fullpage

Firefox documents these options:

  • --fullpage: include webpage content outside the current window bounds.
  • --selector "CSS selector": capture the element matched by a CSS selector.
  • --filename name.png: set the PNG filename.
  • --delay seconds: wait before capturing, useful when you need time for a menu or hover state to appear.
  • --dpr number: set the device-pixel ratio. A value above 1 produces a more zoomed-in image; a value below 1 produces a more zoomed-out image.
  • --clipboard: copy the screenshot to the clipboard. By itself, this prevents saving a file.
  • --file: force file writing when another option, such as --clipboard, is also used.

For example, capture a selected element by its CSS selector with a chosen filename:

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:screenshot --selector "#main-content" --filename section.png

For a delayed capture that is both copied and saved:

:screenshot --delay 2 --clipboard --file --filename menu.png

For full-page captures, Firefox appends -fullpage to the filename. Reusing the same filename overwrites the previous image, so choose a different name when keeping successive captures.

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Capture the visible viewport in Responsive Design Mode

  1. Open Responsive Design Mode for the page.
  2. Click its camera button to take a viewport screenshot.

The screenshot is saved to Firefox’s default download location. If Screenshot to clipboard is enabled in Developer Tools settings, the capture is also copied to the system clipboard.

Troubleshoot common capture issues

The full-page screenshot button is missing

It is not enabled by default. Open Developer Tools settings, find Available Toolbox Buttons, and enable Take a screenshot of the entire page.

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The capture shows only the visible area

Use the full-page toolbar button or add --fullpage to a Web Console command. Responsive Design Mode’s camera route is for a viewport screenshot.

The screenshot was copied but no file appeared

--clipboard suppresses file saving unless you also use --file. Add that option when you want both clipboard output and a saved image.

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A previous image disappeared

A Web Console capture reusing a filename overwrites the previous image. Specify a different filename for each capture you need to retain.

The menu or hover state is missing

Use --delay seconds to wait before the capture, giving the interface time to reach the desired state.

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Or skip the browser setup

ScreenshotNeo provides a one-request screenshot API. Replace the target URL as needed; its documentation lists request options.

curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webp

ScreenshotNeo accepts cookie banners like a visitor and removes more than 60 known consent platforms, newsletter popups, and chat widgets before capture; each step can be turned off. Bot checks, blank pages, timeouts, failed loads, and cache hits cost nothing, and response headers identify the page verdict and billing status. Its MCP server lets AI agents use take_screenshot, get_page_info, and capture_pdf. The free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000 screenshots.

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Sign up for ScreenshotNeo’s free plan.

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