How to index more content than just the first few paragraphs after each heading

I've been using this plugin for ages now but I always find that the Algolia index only contains search records containing the first paragraphs after each heading.

Is there an option or change I can make to the source library to allow the whole page to be indexed?

Thanks

Start by reproducing the issue with a Jekyll site and inspect how the Algolia index is built from content after headings. Compare the indexed records with the full page text, then verify that the complete page is searchable without breaking existing heading-based records.

Written by the indexing model from the issue text.