Validation Error on SVG image No RDF allowed

[GrannyGrump]

I created some svg images with Inkscape via bitmap trace, and made sure to save to "plain svg". I added them to my epub, they display fine in Sigil, Calibre, ADE.

Pagina Epubchecker [http://www.pagina-online.de/produkte...checker/#c773] Gives error message for each one.


ERROR: filename.epub/OEBPS/Images/h06.svg(16,14): element "rdf:RDF" not allowed anywhere; expected the element end-tag or text

The SVG looks like this:

Spoiler:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
version="1.1"
width="511"
height="245"
id="svg3021">
<metadata
id="metadata3027">
<rdf:RDF>
<cc:Work
rdf:about="">
<dc:format>image/svg+xml</dc:format>
<dc:type
rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
<dc:title></dc:title>
</cc:Work>
</rdf:RDF>
</metadata>
<defs
id="defs3025" />
<path
d="m 168.3347,240.80845 c 0.13854,-2.77292 0.56997,-3.33297 2.6653,-3.45991 1.375,-0.0833 3.24427,-0.1958 4.15393,-0.25 1.50798,-0.0898 1.48592,-0.5407 -0.25,-5.10927 -1.04716,-2.7559 -1.90393,-5.8808 -1.90393ETC, ETC, ETC.

Should I be concerned, and if so, what might be the fix?

Thanks for any advice.
gG

[DaleDe]

Generally speaking SVG files are not support in ePub 2. SVG is supported inside a HTML document in ePub 2. The entire metadata should be removed and an html wrapper should be added. SVG by itself is supported in epub 3.

Dale

[GrannyGrump]

I am using the svg referenced in an xhtml file, called the same way as I would call a jpeg or png. The code looks like this:

<blockquote class="epigram">
<p class="ethiopic"><span class="noade">
መፍትው፡​ሕዝበ፡​ክርስቲያን፡​እለ፡​አልቦሙ፡​ውሉደ፡​ይሕፅንዎሙ፡​ለእጓለ፡​ማውታ፡​ወራዙት፡​ወደናግል፡​ወይረስይዎሙ፡​ከመ፡​ውሉዶሙ፡​ወፈድፋደ፡​ያፍቅርዎሙ።
</span>
<span class="ade">
<img alt="" class="svg6" src="../Images/h02.svg"/></span>
</p>
<div>
<a href="../Text/appendixB.xhtml#epgtr02" id="epg02">[&nbsp;2&nbsp;]</a>
</div>
</blockquote>

EDIT TO ADD-- DaleDe, it took a few minutes for the penny to drop. I see what you are saying -- the metadata is superfluous for the usage in xhtml. Thank you for your help.

[Doitsu]

Apparently, ePubcheck accepts only SVG 1.1 images without RDF metadata, even though ADE/RMSDK displays these files just fine.

However, you can easily fix this by implementing the following changes:

1. Delete xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
2. Change version="1.2" to version="1.1"
3. Delete the <rdf:RDF> ... </rdf:RDF> section

The header should look like this:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:cc="http://creativecommons.org/ns#"
   xmlns:svg="http://www.w3.org/2000/svg"
   xmlns="http://www.w3.org/2000/svg"
   version="1.1"
   width="511"
   height="245"
   id="svg3021">
  <defs
     id="defs3025" />
  <metadata
     id="metadata7">
  </metadata>

If you implement these changes, you shouldn't get any SVG-related validation errors.

[GrannyGrump]

Doitsu, thank you so much for the explanation and the detailed instruction.

I despair of ever coming to grips with svg in all its wondrous and wandering ways...

[MikeWV]

Thanks, Doitsu. #2 wasn't an issue for me and I had surmised that I needed to do #3 but it would have been a while before before I figured out the need to do #1.