Not wanting to undo your good work, but I've finally cracked this one and found an elegant way to do it.
Download and install CutePDF from here: http://www.cutepdf.com/" onclick="window.open(this.href);return false;
It's a virtual printer driver that writes out to a PDF file, you might even have it already as a lot of people use it.
Open Sedre and find the wiring diagram you want, right click on it and choose "Save SVG as", (or if your SVG viewer is in French "Copier le SVG"
Now comes the clever bit, open the SVG file thus saved into Google Chrome, NOT Internet Explorer! Right click it and choose open in Google Chrome. For some reason that I haven't had time to investigate, if you have IE still open it sometimes grabs the SVG type and opens it in IE even though you specifically said open in Google Chrome, even if you associate .svg types with Chrome!
Once you have it open in Google Chrome, right click the image and choose print, choose Cute PDF Writer as the printer, and you probably want to turn off "headers and footers" in options before printing. A save as dialogue will come up from CutePDF, now enter a filename to save it as a PDF. Job done! Sometimes I find it adds a blank page after the page(s) of interest, so if that happens just manually set a page print range to eliminate the blank page.
If you print the SVG from Internet Explorer it renders it as a low resolution bitmap so the resulting PDF is both huge in file size (about 800KB for one page) and has no detail to zoom into, you can't even read the writing its so bad...
However if you print an SVG from Google Chrome it renders it as a super crisp scaleable vector diagram to the printer, and CutePDF is able to capture the vector data and create an entirely vector based PDF with no conversion loss!
So you get unlimited detail that you can zoom right into, and a file size of only about 60KB for a page, in a file format that almost anything can display. Here's an example of one I converted, try zooming into it in a PDF viewer:
https://dl.dropboxusercontent.com/u/782 ... nciple.pdf" onclick="window.open(this.href);return false;
What's more these PDF's work absolutely perfectly on an iPad in any app that can view PDF's (I use one called "Files", or sometimes just Adobe Reader) and render at native screen resolution.
Absolutely chuffed that I now have a way to import high quality small file size versions of the wiring diagrams onto my iPad, its a little bit of work but is 100x easier than trying to view them in the god awful SVG viewer built into Sedre...
