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pressbooks / pressbooks-book

McLuhan is the default book theme for Pressbooks.
https://pressbooks.org
GNU General Public License v3.0
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"prince-image-resolution" property distorts small images #329

Open greatislander opened 6 years ago

greatislander commented 6 years ago

Description

When exporting a PDF with a small image, the presence of the prince-image-resolution property can cause distortion.

mcgratay commented 4 years ago

Reproducible. Image quality is decreased regardless of the original uploaded image's DPI, unless the image is uploaded at full size. Up to this point we've always recommend that users who want high-quality images in print format set all of their images to full size and then maintain high image quality by resizing the image with a custom CSS class rather than the default WP image sizes.

Here's an example test book: https://imagequality.textopress.com/

It would be ideal to resolve this issue so that custom classes were not necessary in order to have high-quality images in all formats.