PageSieve

The documentation does not mention pricing; it is available on the Mozilla Addon Store, but cost details are not specified.

PageSieve is explicitly listed on the Mozilla Addon Store, indicating Firefox support. Other browsers are not mentioned in the provided content.

You use the sidebar to define field names and choose CSS or XPath selectors, aided by the point-and-click selection feature. The configuration can then be saved as a JSON file.

Yes, because configurations are saved as reusable JSON files, they can be easily exported and shared with other users.

The extension is local-first, meaning all scraping is performed in your browser. It likely works offline for local pages, but the documentation does not explicitly mention offline usage.