Back infinite scroll and load-more buttons with paginated URLs

Google renders a page in a very tall viewport instead of scrolling, which is not efficient and can miss content; a figure of around 10,000 pixels was said at Search Central Live but is not documented. Content that appears only after scrolling beyond that, or after clicking "load more", stays invisible unless each chunk also has its own URL. Said at Search Central Live: a Google panelist called pagination one of the trickiest things in web development and a switch to infinite scroll or a load-more button risky, depending on what you want to achieve, because Googlebot does not click buttons; without crawlable links to them, Google does not see the further pages at all.

Build load-more and infinite scroll on top of the paginated series (DEV-URL-06): each chunk has a persistent, unique URL that also works on direct load, chunks link to each other with <a href>, and the History API updates the address when a new chunk becomes the main visible element. Trigger loading with an IntersectionObserver, never a scroll listener (DEV-REN-03).

Decided automatically once Regensbot renders your pages.

Headless Chromium renders the page on an isolated render service, and the raw and the rendered HTML run through the same parsers.

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