I never insert images as pictures. The JPEG images are only ever used as backgrounds for frames. I also never open the JPEGs in any picture editing application and copypaste from there, the images are only ever used as files from disk.
What I'm doing is precisely this: File > Insert > Frame... > OK Then [right click on the frame created] > Frame... > Background > As: Graphic > Browse... > [select the JPEG file from disk] > Type: Area > OK And then repeat, many times, always selecting a different JPEG for the background. On Sat, Mar 1, 2014 at 2:04 PM, Mark Bourne < [email protected]> wrote: > Sure, but how did you then get those images into LibreOffice? > > If you use Insert > Picture > From file, LO knows that the file is a JPEG > and probably even copies the file as-is into the ODF file. > > If you open the JPEG file in another application (such as an image > editor), then copy from there and paste into LO, in this case LO will only > have the bitmap data copied from the image editor. It will not know about > the original image file nor what type it was, and probably uses its default > format, i.e. PNG, to save that image data within the ODF file. > > My suspicion is that, although you saved all the source images as JPEGs, > those which appear as JPEG in the ODF file were inserted by Insert > > Picture > From file, while those which appear as PNG in the ODF file were > opened in another application and copied and pasted into LO Writer. > > Mark. > > > > Ra wrote: > >> Good guess but sadly no. All the images are first stored as JPEGs. That's >> how I know they in fact *are* JPEGs. ;-) >> >> >> >> Ra wrote: >> >> Hello, >> >> I have noticed some unexpected (and possibly inconsistent) behavior of >> documents producet with LO Writer. Here's my scenario: I have several >> frames in the document and each of them has a JPEG photo as the >> background. >> Each frame has a different image as a background. There are no other >> graphics in the document, just some text. The resulting document ends up >> being considerably larger than the sum of all the images and all the text >> content put together. >> >> Knowing that ODFs are really just ZIP archives, I decided to dig a little >> deeper. Having opened an ODF file with an archiver I noticed most (but not >> all, surprisingly!) of my JPEGs got converted to PNGs before getting >> stored. I don't know much about this but up until now I believed LO stores >> all external images as direct file copies, or at the very least in the >> original format, so this striked me as odd. >> >> >> Just a guess, but if you copy and paste an image from another file, LO >> won't know what format it was in originally (all it has is bitmap data >> pasted from the clipboard), so will probably use PNG since it is a >> lossless >> format. Maybe those in JPEG format were inserted by Insert > Picture > >> From >> file (or similar), while those in PNG format were opened in another >> application, copied from there, and then pasted into LO? >> >> I've been told the ODF specification recommends using PNGs for bitmaps >> and >> SVG for vector graphics. This makes sense generally but is also quite >> inefficient for photos as PNG photos tend to be much larger than JPEGs. It >> is also weird that only some of my images got converted. >> >> Anybody know and can explain the logic behind this? My document currently >> contains about 100 such images, the JPEGs are all together about ~15MB in >> size, the rest of the document is mostly plain text with some formatting, >> and yet my document ends up at about ~47MB. I would like to optimize and >> reduce this if possible. >> >> In case it matters, the document was produced over several weeks in LO 4.x >> or newer on Windows (XP/x86 and 7/x64) and Linux (x86). >> >> Thank you. >> >> >> -- >> To unsubscribe e-mail to: [email protected] >> 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 >> >> > -- > To unsubscribe e-mail to: [email protected] > 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 > -- To unsubscribe e-mail to: [email protected] 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
