Add the option to switch between rendered html and raw source data after crawl completed. Sometimes there is a need to find data in the page source and compare it with the rendered data and have it searchable using the advanced filter. It should be fairly easy since the crawler seems to save the raw source anyway.

I was just auditing a website that had the dev urls left by mistake in the canonical url in the raw source. As the page rendered the canonical was overwritten byt JS to the correct URL. When checking in Google Search Console, Google seems to have seen this and it caused a lot of crawled but not indexed urls. If it was possible to compare the canonical urls between ras source and rendered html this would have been picked up more easily.