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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallIf a Urlbox full-page screenshot is missing images that load as you scroll, start with full_page=true and the default full_page_mode=stitch. Keep the initial scroll enabled: Urlbox uses it to trigger lazy loading and measure the page. If images are still absent, reduce scroll_increment and increase scroll_delay. Do not use skip_scroll=true for this problem; it skips the traversal that can load those images. Urlbox documents its full-page and stitch behavior.
Start with a full-page stitched capture
For a long page with scroll-triggered images, use stitch mode first. Urlbox describes stitch as its default full-page mode: it scrolls through the page, captures multiple sections, and combines them. The scroll is important because an image may not be requested until it approaches the viewport.
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{
"url": "https://example.com/long-page",
"full_page": true,
"full_page_mode": "stitch"
}Keep the initial scroll enabled. The skip_scroll=true option can speed rendering, but it skips the traversal used to trigger lazy-loaded elements. See Urlbox’s Render Options and full-page screenshot documentation.
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Tune scrolling if images are still missing
Reduce the scroll increment
scroll_increment controls the distance between scroll steps. If a large jump does not bring an image close enough to the viewport to activate the site’s lazy loader, try smaller steps. Urlbox gives 400 pixels as an example for pages that need smaller increments; it is a documented example, not a universal setting.
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Add time after each scroll
scroll_delay sets the pause between section captures. Increase it if image requests, animations, or deferred page content need longer to settle after scrolling. More delay means a longer render; there is no single ideal value for every site.
{
"url": "https://example.com/long-page",
"full_page": true,
"full_page_mode": "stitch",
"scroll_increment": 400,
"scroll_delay": 500
}The 500 ms delay above is a reasonable starting experiment, not a Urlbox-mandated value or a guaranteed fix. Adjust one setting at a time so you can tell which change helps. The documented controls are in Urlbox’s Render Options.
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Use selector and page-readiness waits for the right job
wait_for can wait for a CSS selector to be present or visible, and wait_timeout sets the timeout; Urlbox documents a default of 30,000 ms. Choose a page-specific element that indicates useful readiness, such as a gallery container. A selector wait does not itself trigger images that load only when scrolled into view, and the selector appearing does not guarantee that every image’s bytes have finished loading. Keep scroll behavior enabled and combine the wait with scroll tuning when both conditions matter.
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The wait_until setting offers page lifecycle or request-related readiness conditions, including loaded, domloaded, requestsfinished, and mostrequestsfinished. These are alternatives for deciding when the page is ready to proceed; they do not replace scrolling for viewport-triggered content. Check the current option names and behavior in Urlbox’s options reference.
Choose stitch or native mode
| Mode | When it fits | Trade-off |
|---|---|---|
stitch |
Use first when you need scroll-triggered content, or when accuracy across varied pages matters. | It scrolls and captures multiple sections before compositing, so the additional work can take longer. |
native |
Consider it when speed matters more and the page behaves correctly with browser-native full-page capture. | Urlbox describes it as faster, but says it may not work well on all sites. |
For missing lazy-loaded images, stitch is the sensible starting point because its documented process includes scrolling. Urlbox characterizes stitch as more reliable across websites; that is product documentation, not a guarantee for every page. Details are in its full-page screenshots guide.
Account for infinite scroll, fixed elements, and output format
Infinite-scroll pages
A page that keeps adding content as you scroll may never have a natural end. Urlbox says it detects infinite scroll and limits capture to three sections by default. allow_infinite=true overrides that behavior, but use it only when you know the page’s growth is bounded; otherwise the capture can become unnecessarily large or slow. See the options reference.
Sticky headers and footers
Fixed elements can appear repeatedly across stitched sections. Urlbox says stitch mode uses heuristics to detect and capture most fixed elements once. Setting freeze_fixed=false disables that behavior; change it only if the default treatment causes a specific problem.
Image format
For full-page image output, Urlbox’s screenshots guide recommends PNG because of image-size limitations affecting JPEG and WebP. Pick the output format with the page’s length and your downstream file-size needs in mind.
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Diagnose seams and long-running renders
If the result has visible joins or discontinuities, set show_seams=true to inspect the individual captured sections and identify where the stitching diverges. For unusually long, resource-intensive full-page captures, Urlbox recommends asynchronous rendering rather than holding a request open. Its async renders and webhooks guide explains queuing work and checking status or receiving a webhook.
Troubleshooting checklist
- Images below the fold are absent: confirm
full_page=true, usefull_page_mode=stitch, and do not setskip_scroll=true. - Only some images load: reduce
scroll_increment; some pages need smaller steps such as the documented 400 px example. - Images appear partially loaded or animations are unfinished: increase
scroll_delayand allow more time after each scroll. - A known gallery or readiness element is late: use
wait_forwith a suitablewait_timeout, while retaining scroll-triggering behavior. - The page keeps growing: account for Urlbox’s three-section default limit for detected infinite scroll; only override it with
allow_infinite=truewhen appropriate. - Sections have visible joins: enable
show_seams=trueto inspect the captured segments. - The request takes too long: queue a long capture asynchronously and check its status or use a webhook instead of keeping a request open.
Or skip the browser setup
If you would rather request the capture through an API, ScreenshotNeo returns a screenshot or PDF from one GET request. For this long-page example, request a full-page capture and use scroll settings to allow lazy-loaded content to appear:
ScreenshotNeo API documentation
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com/long-page -d full_page=true -o shot.webpScreenshotNeo accepts cookie and consent banners before capture and removes more than 60 known consent platforms, newsletter popups, and chat widgets; each of those steps can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits cost nothing, with page-verdict and billing information in response headers. It also offers an MCP server for AI agents using Claude, Cursor, or another MCP client. The free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000 shots.
Sign up for ScreenshotNeo’s free plan.
FAQ
Will increasing the timeout alone make lazy-loaded images appear?
Not necessarily. A timeout can help content finish loading after it is requested, but images that load only when brought near the viewport still need scrolling.
Does wait_for confirm that every image finished downloading?
No. It confirms that the selected element meets the configured selector condition, not that every image’s data has arrived.
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