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Yes—but a full-page capture does not guarantee that every lazy-loaded image will appear. Firefox’s “Save full page” option captures the document, while a page may not have requested images that have not approached the viewport. Scroll through the page first, wait for its images to load, then capture.
Why a full-page screenshot can still miss images
Mozilla Support documents Firefox screenshot choices including “Save full page” and “Save visible.” The former captures the page rather than only the current viewport; the documentation does not say it scrolls through the page to trigger each site’s lazy-loading behavior. Mozilla Support: Take screenshots in Firefox.
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Many pages defer image requests until an image nears the viewport. A screenshot may cover the document’s full height while an image that the page never loaded remains blank. A historical Mozilla Bugzilla discussion of loading="lazy" describes how viewport intersection and scroll ports can affect loading, and why painting a screenshot is not necessarily the same as scrolling the page. That discussion explains a possible mechanism; it is not a guarantee about every current Firefox version or website. Mozilla Bugzilla discussion.
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- Open the page and scroll steadily from the top to the bottom. Pause where needed so images approaching the viewport have time to appear.
- Check the page visually, especially sections with images, and wait for the images to load.
- Return to the desired starting position if useful, open Firefox Screenshots, and choose Save full page. Choose Save visible only if you want the current viewport.
- Open the saved image and check the regions that matter. If images are still missing, try the cases below rather than assuming that full-page capture triggered them.
Scrolling first is a practical workaround for ordinary viewport-based lazy loading, not a promise for infinite-scroll pages, content that unloads after leaving the viewport, or content inside a separate scrolling area.
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What to try when scrolling first does not work
Content in an iframe or independently scrolling panel
A page-level capture may not include content that lives inside an iframe or a nested scroll container, or may not cause that content to load. Scroll within the panel itself and inspect the result. Historical Mozilla Bugzilla discussion notes that inner frames, scroll containers, and page-height behavior can create separate full-page capture issues; it does not establish a universal current limitation. Mozilla Bugzilla report.
Very long or infinite-scroll pages
For infinite scroll, reaching the bottom may add more content rather than reveal a fixed final document. Load the portions you need and verify what the capture includes. Very long pages can also encounter capture limits, but the historical bug report is not evidence of a specific current limit.
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Consider a scrolling add-on
Mozilla Add-ons listings for Fullshot and Full Page Screenshotter describe dynamic-scroll or image-preloading approaches. Those are publisher descriptions, not independent verification; review each add-on’s permissions and behavior before installing it.
Use Firefox Developer Tools for a full-page or targeted capture
Firefox Developer Tools offers a full-page screenshot button that can be enabled in toolbox settings. Its Web Console screenshot helper also supports full-page, selector-based, and delayed captures. See Firefox Developer Tools screenshot documentation.
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:screenshot --fullpagecaptures the full page.:screenshot --selector .product-gallerytargets an element by selector.:screenshot --delay 3000waits before capture; the delay can allow a page to settle, but does not itself guarantee that lazy images load.
For images deferred until they approach the viewport, scroll them into view and confirm they have appeared before using the screenshot helper. Consult the documentation for the exact supported options in your Firefox version.
Or skip the browser setup
For an API-based capture, ScreenshotNeo accepts one GET request with a URL and can return a screenshot or PDF. Here is the cURL form; change the target URL as needed. For request options and parameters, see the ScreenshotNeo documentation.
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curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpScreenshotNeo accepts cookie and consent banners and removes more than 60 known consent platforms, newsletter popups, and chat widgets before capture; each cleanup step can be turned off. Bot checks, blank pages, timeouts, failed loads, and cache hits are not billed, and the response identifies the page verdict and billing status. Its MCP server provides screenshot, page-info, and PDF tools for AI agents. The free plan includes 1,000 shots a month with no card; paid plans start at $5 for 3,000 shots.
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Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
Does Firefox’s “Save full page” automatically scroll to load every image?
Mozilla’s screenshot documentation does not say that it scrolls the page to trigger lazy loading. Scroll through the page and confirm images appear before capturing.
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Will waiting before a Developer Tools screenshot load lazy images?
A delay gives the page time to settle, but Firefox’s documentation does not promise that a delay triggers lazy loading. Scroll the images into view first.
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