export ODT document to image

I want to export an ODT document (with several pages) to one image but when I do it from File > Export to... only it exports the actual page.
How can I export all pages?

What do you mean by using the data type image? this will be by definition one page. If you need multiple images of several pages you should be using PDF. Try exporting the file as aq PDF.

Why do you say “this will be by definition one page.”?

Let’s put it this way: by definition means by definition of LibreOffice’s export function or in other words: There is no option in LibreOffice to tell “I want all pages converted to image sizes so they fit all into a single page (whatever size this single page might be)”

Maybe a better word would be by design.

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And this export function is more or less a dummy. First, in the save dialog, there is a checkbox, which allows you to export only the “selection” - whatever this may say, and it has no influence of the behavior.
The dialog, that appears if you’ve selected “png” for example and press “save”, is without any function - anyway, what you choose, the exported image has only 72DPI, which practically means: completely worthless.
I use LibreOffice in my days work and it is better describes as a bug-collection.

When you get to the PNG Options dialogue

  1. Make a note of the Width.
  2. Change the resolution to you desired resolution, e.g. 300 dpi
  3. Change the Width back to its original number and press OK

The image is exported at original dimensions but at 300 dpi

FTR: tdf#80879

The suggestion to export to pdf is a workaround for what you wish to do. I don’t think there’s a direct way to do what you’re after directly from LO.

I would export to pdf from Libreoffice Writer and then use a pdf viewer with the capacity to save pages as images.

On Windows there’s PDF X-Change Editor.

On Linux there’s a number of ways to do it. I prefer using pdfimages -png myfile.pdf pg.

At least as I know, there is NO pdf viewer under Linux (I am using Debian and have three installed - you need three (at least!), because none is complete.
Additionally, from my - limited experience - “pdfimage” exports images from pdf files, it does NOT convert pdf files into images. This is part of the linux nightmare, that you’ve most of the time have to revert to the commandline and, really, who knows waht is in the poppler-utils?
The best Linux tools are usually NOT in the “sooo famous” distroy, for example, “nomacs” is even not in the newest Debian relase. Some interest groups have their hand on, how Linux spreads to users …
BTW, “pdftoppm” is exactly, what he wants.
BTW, to induce “what he want”, is where at least paternalism starts.

??? How do you call apvlv gsview mupdf xpdf okteta evince and others ?

Do you really try all available programs manually?
Do you not have something to work?
Usually, it is not worth to spent the time - you’ll finding the next PITA.
BTW, I wrote “there is NO pdf viewer under Linux” - missed, “that has that feature” - I mentioned, that I have three installed. I checked my three and none can.

PDF is already some kind of image: the format has been designed by Adobe as a “page” description language, by “page” understand an area of limited extent containing graphical shapes (every glyph is a graphical shape).

Viewer were initially not intended to process PDF files. There are various tools to shrink PDF “images” and glue them together. But as far as I know (never having the need to use them), they are command-line tools.