Linearizing PDF scans

Hi Dave - I think it used to be called Byte Range Serving i.e. it would only serve up the page requested so URL's like somewebsite.com/myfile.pdf#page=4 would only send page 4 to the browser - I think this is what you are talking about Back in my earlier PDF days and the web we were quite a**l about setting PDF's up for this due to much tighter bandwidth constraints but on my limited understanding it required support from the web server to actually give effect to this. I don't know if PDF's are optimised out of the box these days for this but if you optimise a PDF for web delivery it should have the markers in it for byte range serving. While the markers may add a bit to the file size, which I suspect would be negligible, the action of optimising it for web delivery should reduce file size quite noticeably anyway. If you have an option for optimising for web delivery in your PDF tool then try pumping out a PDF file both ways and compare file size. Is it useful these days - probably not so much because of better bandwidth in my view (although directing a browser to open to a specific page can still be useful) but that is conditional on having well prepared PDF files. I'm not aware of any local benefit in having files prepared this way other than having good quality PDF's that are well presented and therefore easier to use. Kevin Parker 0418 815 527 -----Original Message----- From: cctech <cctech-bounces at classiccmp.org> On Behalf Of J. David Bryan via cctech Sent: Saturday, 14 August 2021 6:21 AM To: Classic Computing List <cctech at classiccmp.org> Subject: Linearizing PDF scans Is it still useful to linearize PDFs? I've been scanning and PDFing manuals for 16 years, and I've been linearizing them regularly. My understanding is that this made them accessible on a page-by-page basis in Web browsers without requiring a complete file download first. But given the increase in typical bandwidth in 16 years, I wonder if this is still useful. It is an extra step, and it does make the files somewhat larger. Recommendations? Does linearizing confer any advantage locally once the entire file is downloaded? Thanks. -- Dave