- publishing free software manuals
The Org Mode 7 Reference Manual
by Carsten Dominik and others
Paperback (6"x9"), 282 pages
ISBN 9781906966089
RRP £9.95 ($14.95)

Sales of this book support the Org project! Get a printed copy>>>

12.7.5 Images in DocBook export

Images that are linked to without a description part in the link, like ‘[[file:img.jpg]]’ or ‘[[./img.jpg]]’, will be exported to DocBook using mediaobject elements. Each mediaobject element contains an imageobject that wraps an imagedata element. If you have specified a caption for an image as described in section 11.2 Images and Tables, a caption element will be added in mediaobject. If a label is also specified, it will be exported as an xml:id attribute of the mediaobject element.

Image attributes supported by the imagedata element, like align or width, can be specified in two ways: you can either customize variable org-export-docbook-default-image-attributes or use the #+ATTR_DOCBOOK: line. Attributes specified in variable org-export-docbook-default-image-attributes are applied to all inline images in the Org file to be exported (unless they are overridden by image attributes specified in #+ATTR_DOCBOOK: lines).

The #+ATTR_DOCBOOK: line can be used to specify additional image attributes or override default image attributes for individual images. If the same attribute appears in both the #+ATTR_DOCBOOK: line and variable org-export-docbook-default-image-attributes, the former takes precedence. Here is an example about how image attributes can be set:

#+CAPTION:    The logo of Org-mode
#+LABEL:      unicorn-svg
#+ATTR_DOCBOOK: scalefit="1" width="100%" depth="100%"

By default, DocBook exporter recognizes the following image file types: ‘jpeg’, ‘jpg’, ‘png’, ‘gif’, and ‘svg’. You can customize variable org-export-docbook-inline-image-extensions to add more types to this list as long as DocBook supports them.

ISBN 9781906966089The Org Mode 7 Reference ManualSee the print edition