Image quality in Masonry gallery (Shortpixel & Simple Image Sizes)

Hi

(I’ve already been researching this topic, but couldn’t find a suggestion to work for my specific issue)

I’m using Shortpixel (lossy) to optimize my images. Those images are looking pretty good.
I’m also using the ‘Simple Image Sizes’ (which is recommended here often) to get certain image sizes, which wordpress doesn’t offer out of the box.

Right now I have an issue, that pictures in the masonry gallery are looking pretty good, when looking at the thumbnails.
But when clicking on them to see them ‘full size’ (Lightbox) the image quality is pretty bad (very visible color grading, aliasing, etc.)

This only happens in the masonry gallery and I have the feeling that my small thumbnails are getting blown up to the ‘Large size’ (1030 pixel width max.).

I’ve already tried to regenerate thumbnails and re-optimize in Shortpixel, but the only effect I got was blowing up the image size (30kb to 350kb+)

You can see an quality example here (example of a full screen masonry link): https://www.parkour-austria.at/wp-content/uploads/2017/05/performance_masonry7-1030×687.jpg

What’s the correct process to get good image quality AND a small file size, for masonry pictures in the lightbox (full screen) view?
Normal pictures/thumbnails etc. are all optimized and are looking good, only masonry pictures are affected.
(I think this should be possible without fiddling within the php code)

thanks in advance!
TOM

• This topic was modified 4 years, 11 months ago by TOM.