Full-page captures

Set full_page: true to capture the scrollable page rather than only the initial viewport.

{
  "url": "https://example.com",
  "full_page": true,
  "format": "png",
  "full_page_algorithm": "by_sections",
  "full_page_scroll_delay": 300,
  "reduce_motion": true
}

Full-page images cost 2 credits on successful completion. PDF output costs 3 credits whether or not full_page is enabled.

Select an algorithm

by_sections is the default. The engine scrolls downward, captures visible sections, and assembles the output. This lets it capture content that appears during scrolling. native uses the engine’s native full-page capture path after scroll preparation. Test both algorithms against your target when sticky navigation or scroll-dependent effects affect the result.

Control scrolling

Option	Behavior
`full_page_scroll_delay`	Optional delay between scroll steps, 0–5000 ms.
`full_page_scroll_by`	Optional scroll step, 120–2160 CSS pixels.
`reduce_motion`	Defaults to true. Reduces motion during capture.

More waiting can help a site load lazy content, but also increases work. Start with defaults and adjust only when the output shows missing content. Use a readiness selector when the application has a dependable loaded state.

Detect truncated output

Infinite-scroll sites do not have a stable end. The engine uses deployment-configured height and scroll limits so a capture can terminate. Inspect render_diagnostics.truncated and stopped_reason when they are returned. A successful artifact can still be shorter than the target’s eventual infinite document. For a fixed report, use min_capture_height or required text checks to enforce expectations. For a feed, define a finite section to capture with selector instead of assuming that all future items can be included. Full-page capture can change page state as it scrolls. If exact animation frames matter, validate the output on your page with reduce_motion configured appropriately.

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Troubleshooting

Contract reference

Select an algorithm

Control scrolling

Detect truncated output

​Select an algorithm

​Control scrolling

​Detect truncated output

Select an algorithm

Control scrolling

Detect truncated output