Now that (most) instructions PDFs have part numbers in a format that can be copied out - you can try it yourself, just select text and "Copy" in your PDF reader - it has saved me a TON of labour. Mind you, that's why my inventory includes parts with nothing but a number... it was copied from the PDF and doesn't have a picture or name scrapeable from the official website, yet. That's got to be done by hand.
They're re-issuing a large number of PDFs, in this format, I think partly because they have to have the "UK CA" fine-print on them now. I've got a scheme underway to notate what parts come from which instructions, since some of these show updated parts. (Some have an updated part number for the plans themselves, some don't, just a change of date. FUN!)