I am building a fotopage with SP Easy Image Gallery: https://www.zorgboerderijwillemshoeve.nl/fotos1?catid=12
I have set the thumbnail size to 400x400.
But when I view the page on my desktop PC, the thumbnails are 307x307. Which I do not understand, but it is not a problem.
But when I view the page on mobile (through the Firefox inspector) , the images get much larger: 690x690!!
What am I doing wrong? I would expect thumbnails of 400x400 on my desktop and thumbnils that are screen wide on mobile.
Please advise.
Hubert