2014-02-28 2:16 GMT+01:00 Cley Faye <cleyf...@gmail.com>: > As a "proof of concept", I put together a java program that take an odt > file as input. You can then set the "requested" DPI and jpeg quality, and > save. At this point, every pictures that are larger than needed (that's why > we need DPI) are resized, and all pictures are compressed using either jpg > or png, whichever gives the smalles size. Something as simple as that > already have issues, like when there's transparency involved. > Also, it's only tested on a few files (including > https://wiki.documentfoundation.org/images/9/96/WG40-WriterGuideLO.odtfor > funsies). > > If anyone want to give it a try here's the jar. It's highly unlikely to > corrupt your source file (the source file is never ever written), but > there's also no guarantee that the output will work ;) > <http://cleyfaye.net/share/odtcompress.jar> > For example, on the writer guide linked before, it goes from 13MB to 9MB > with default settings. Of course it's not the best example: all pictures > are already reasonably sized, and it's mostly screenshots so the quality > drop is very noticeable... > > Anyway, if anyone want to look at the source code (without reversing the > jar :D) I'll provide them. But know that it's mostly an ugly hack just to > see how well it would work :) >
For the curious ones, I put this "tool" on github (binary & source) : <https://github.com/CleyFaye/LOFiles/releases/tag/v0.1-alpha> This kind of tool is particularly useful if you're working with high-res images, but intend to produce output at lower res. This way, you can keep your original, and generate a file with images adequate for printing at 150dpi, another adapted to 90dpi, etc... As said, it should not damage anything; the worst outcome possible is the output file being incorrect, so as long as you don't choose to save over an existing file, you should be safe to try. If there is a high demand I might keep on improving the code... :-) maybe also expand it with more tools, like basic recovery of damaged files, things like that. -- To unsubscribe e-mail to: users+unsubscr...@global.libreoffice.org Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted
