Reducing image resolution

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Reducing image resolution

Postby daustin » Sat Aug 13, 2011 3:47 pm

I added a few images to a document. I changed the size. Is there a way in Openoffice to change the resolution of the images. I have the size where I want but would like to reduce the resolution to make a smaller document. Of course, I could remove the images, change the resolution outside Open office and add them back but I thought I might be missing somewhere in OpenOffice that allows you to check this.
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Re: reducing image resolution

Postby Hagar Delest » Sat Aug 13, 2011 3:50 pm

Hi and welcome to the forum!

I don't think it's possible (but there is an extension for Impress however: the presentation minimizer). Better work on the pics with a dedicated application (I use XnView, it's rather good) before inserting them.

Please add '[Solved]' at beginning of your first post title (edit button) if your issue has been fixed.
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Re: Reducing image resolution

Postby RoryOF » Sat Aug 13, 2011 4:55 pm

A useful way to reduce file size is to encode (externally) images as jpegs; you can choose various quality levels before encoding. On continuous tone images (photos and similar) one can gain a lot of compression without appreciable loss of quality.
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Re: Reducing image resolution

Postby Horse » Sun Oct 01, 2017 12:48 am

Another option, the only one I've found to reduce all the resolutions without a lot of work, is to convert to pdf. In the conversion look at the "Jpeg Compression" I've been setting the "Quality at 20%," which is adequate for computer display (50 DPI or something like that), but keeping the full resolution in the original so the print versions will turn out sharp at 300 or so DPI.
So if you can use PDF, this gives a 5-second solution. Too bad I can't do a "Save As" with similar "quality" reduction for a 5-second solution there.
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Re: Reducing image resolution

Postby John_Ha » Tue Oct 17, 2017 3:12 pm

See [Tutorial] Some useful hints on using images for a discussion on how best to handle images in Writer.

If your problem is solved, please view your first post in this thread and click the Edit button (top right in the post) and add [Solved] in front of the subject.
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See the Writer Manual, the Writer FAQ, the Writer Tutorials and the up to date Writer guide for information. Click the Help button on a pop-up window for extensive help on that function.
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Re: Reducing image resolution

Postby RoryOF » Tue Oct 17, 2017 3:29 pm

As a general rule, printed images (photos) do not need to be printed at a resolution greater that 180 dpi (210 dpi for best quality). Line charts ad graphic images should be at least 300dpi on the printed page (600 dpi may be better).
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