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EPUB3 export improvements in Libreoffice Writer

Estimated read time: 2 minutes

I worked on improving the EPUB3 export filter in LibreOffice recently. First, thanks to Nou&Off in cooperation with a customer who made this work possible. Since the previous blog entry there have been a number of improvements around 4 topics.

https://farm5.staticflickr.com/4540/38847800651_d5271ced3a_o.png

The character properties of link text is now handled correctly, in the above example you can see that the text is red, and this comes from a character style.

Improved table support

Previously the support for tables was there just to not loose content, now all kinds cell, row and table properties are handled correctly. A few samples

  • custom cell width:

https://farm5.staticflickr.com/4566/38847800611_38b8483d7f_o.png
  • custom row height:

https://farm5.staticflickr.com/4580/38847800521_26285a9152_o.png
  • row span:

https://farm5.staticflickr.com/4540/38847800461_359651bc3d_o.png

So the table support should be now decent, covering row and column spanning and various cell border properties.

Improved image support

Previously only the simplest as-character anchoring was supported. Now much more cases are handled. Two examples:

  • image borders:

https://farm5.staticflickr.com/4541/24975193838_94818bd1ed_o.png
  • image with a caption:

https://farm5.staticflickr.com/4568/24975193608_83239bf287_o.png

This includes various wrap types (to the extent HTML5 allows representing ODF wrap types).

Font embedding

If the user chooses to embed fonts (via File → Properties → Font → Embed), then the EPUB export now handles this. Here is a custom font that is typically not available:

https://farm5.staticflickr.com/4561/38847800811_613d6fbbd2_o.png

(The screenshot is from the Calibre ebook reader.)

All this is available in master (towards LibreOffice 6.1), or you can grab a daily build and try it out right now. :-)

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