How to Capture an Entire Webpage in Firefox on Linux

Capturing a full webpage in Firefox on Linux lets you save a long page as a single image, which is handy for sharing, archiving, or offline reading. This guide walks you through the built-in screenshot tool, plus a couple of reliable alternatives if you need more control. You only need Firefox installed on your Linux system—no extra software is required for the basic method.

What You’ll Need

Firefox (any recent version, e.g., Firefox 100 or later)
A Linux desktop environment (GNOME, KDE, XFCE, etc.)
Optional: an image viewer or editor to save or review the screenshot

Step-by-Step

Open the webpage you want to capture in Firefox. Make sure the page is fully loaded—scroll to the bottom and back to the top if needed, so all images and lazy-loaded content are rendered.
Open the screenshot tool by clicking the three horizontal lines (menu button) in the top-right corner, then select More tools → Take Screenshot. Alternatively, press Ctrl+Shift+S on your keyboard.
Choose the full-page capture option. When the screenshot toolbar appears, you’ll see a drop-down menu near the top-right of the page. Click it and select Save full page. The page will automatically scroll and capture the entire content.
Review the preview. Firefox will show a preview of the captured image. Check that the whole page is included—you can scroll the preview to verify.
Download the screenshot. Click the Download button (the down-arrow icon) in the toolbar. The image will be saved to your default Downloads folder as a PNG file.
Optionally, copy to clipboard. If you prefer to paste the image directly into a document or chat, click the Copy button instead of Download.

If the built-in tool doesn’t meet your needs (e.g., you need to capture only a specific section or want to save as JPEG), you can use Firefox’s developer tools:

Open Developer Tools by pressing F12 or Ctrl+Shift+I.
Open the responsive design mode by clicking the phone-and-tablet icon in the top-right of the developer tools panel, or press Ctrl+Shift+M.
Set the viewport size to match your desired width (e.g., 1280 px) and ensure the height is set to a large value like 10000 px to cover the full page.
Take a screenshot via the command. In the developer tools console (the “Console� tab), type screenshot --fullpage and press Enter. This saves a full-page screenshot to your Downloads folder.

If you prefer a graphical tool, you can install a browser extension like “FireShot� or “Fireshot� from the Firefox Add-ons store. These offer more options like editing and uploading, but the built-in method is sufficient for most users.

Common Mistakes

Not scrolling the page first – Some pages load content only when scrolled into view. If you don’t scroll, those parts may appear blank in the screenshot.
Using the wrong shortcut – Ctrl+Shift+S opens the screenshot tool, but if you’re on a laptop, you might need to press Fn as well, depending on your keyboard layout.
Forgetting to select “Save full page� – The default is often “Save visible,� which captures only the viewport. Always check the drop-down.
Capturing before page load completes – If images or scripts are still loading, the screenshot will be incomplete. Wait for the page’s loading indicator to stop.

Tips

Use the developer tools method for very long pages – The built-in tool can handle most pages, but if you encounter a page that crashes or produces a corrupted image, the screenshot --fullpage command is more reliable.
Adjust the viewport width – If you want a screenshot at a specific width (e.g., for a presentation), set the responsive design mode width before capturing.
Check your Downloads folder – The screenshot is saved as “Screenshot_YYYY-MM-DD_HH-MM-SS.png� by default. If you don’t see it, check your Firefox download settings (the folder icon in the toolbar).
Use the clipboard for quick sharing – The “Copy� button is great for pasting into an email or chat without saving a file.

Troubleshooting

The screenshot is blank or cut off. This often happens when the page uses lazy loading or infinite scroll. Try scrolling down slowly to load all content, then take the screenshot again. If it still fails, use the developer tools method with a large viewport height.

The built-in screenshot tool doesn’t work. Some Linux desktops (especially Wayland) may have issues with the screenshot tool. Press Ctrl+Shift+I to open developer tools and try the screenshot --fullpage command. If that fails, restart Firefox or try a different browser.

The screenshot is too large to save. For extremely long pages, the PNG file might be huge (tens of megabytes). You can convert it to JPEG using an image viewer like GIMP or ImageMagick: convert screenshot.png screenshot.jpg.

The page uses dynamic content that changes while capturing. Some pages have animations or auto-refreshing elements. Freeze the page using the developer tools (press F12, go to the “Inspector� tab, and toggle the “Pause� button) before taking the screenshot.

Frequently Asked Questions

Can I capture only a portion of the page?

Yes, in the screenshot tool, select “Save visible� to capture just the viewport, or use the selection mode (drag to select a region) by clicking the “Select region� option in the drop-down.

Where are the screenshots saved?

By default, they go to your Downloads folder. You can change the default download location in Firefox settings (Preferences → General → Downloads).

Does the screenshot include audio or video?

No, it’s a static image. To capture video, you would need a screen recorder like OBS Studio.

Can I take a screenshot of a page that requires login?

Yes, as long as you are logged in in Firefox, the screenshot will capture the page as you see it, including any personalized content.

Is there a keyboard shortcut for full-page screenshot?

No, the shortcut Ctrl+Shift+S opens the tool, but you still need to select “Save full page� from the drop-down.

Why is my screenshot blurry on high-DPI displays?

Firefox captures at the device pixel ratio. If you need a sharper image, increase the zoom level (Ctrl + +) before capturing, or use the developer tools method with a higher viewport resolution.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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