Need more control over the capture

Save-as-ebook is good at capturing everything in the page indiscriminately, which is useful because capturing everything is better than not capturing the needed part of the page. But this also makes it necessary to clean the generated epub of the unnecessary details afterwards.

Adding the ability to apply regular expression replacements on the capture, based on some site rules would significantly if not completely reduce the need to separately clean the epub afterwards.

Also as I mentioned before it would also help editing the epub if the names of the files inside the created epub are human readable.