Images exported by Save As HTML are low quality / low DPI

[obn]

The images embedded in my ODT document are raster images. When I save to HTML, they get dumped out as gif/png. The problem is that the dumped images are of much lower quality than the original ones embedded in my ODT document. The difference is drastic.

Unlike PDF export, I don’t see an option anywhere to set the DPI for images in a HTML save / XHTML export. Is there a GUI option or a configuration file option that allows me to increase the DPI for HTML save /XHTML export? If not, would it be simple for me to temporarily modify OO Writer’s source code such that the default DPI of the exported images is increased? – which file are these defaults defined in?

TIA

Version: 6.3.6.2 (x64)
Build ID: 2196df99b074d8a661f4036fca8fa0cbfa33a497
CPU threads: 12; OS: Windows 10.0; UI render: GL; VCL: win;
Locale: en-US (en_US); UI-Language: en-US
Calc: CL

[LeroyG]

I tried now with a .png and a .jpg images, and the source and the exported images are identical. The .png saves as .png, and the .jpg as .jpg. (LibreOffice 6.3.6.2 (x86); OS: Windows 6.1).

Share your operating system and version of LibreOffice (see menu Help - About LibreOffice).

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[obn]

They aren’t. Here’s an example showing the difference: Poor Image Export by OO - Album on Imgur. Left is a browser, right is Writer. In the 1st image the browser is at 100% zoom, in the 2nd image the browser is at 200% zoom. In the 2nd picture Writer’s image and the browser’s image are roughly the same size, but the one in the browser is much more blurry.

[LeroyG]

It seems abnormal to me that your resulting image is smaller than the original.

Now I see a difference: I exported as .xhtml, no .html. In the .xhtml file the image is embedded.

[obn]

XHTML export keeps sizes for some images. It also heavily distorts the sizes of others and potentially even skips them. Here is a diff of the XHTML export against the original: Imgur: The magic of the Internet. Notice how the large picture is totally missing.

[LeroyG]

Would you share the original file? Before, delete all sensible data, then edit your question and use the paper clip.