Using the recommended sizes and dimensions will give your website a neat and nice appearance. If you deviate from the recommended sizes, it is still most important that all images are of the same size to give a comprehensive look.
Category images
470 x 350px
Product images
1500 x 1500px
Logo
No requirements for dimensions.
Preferably SVG file, but no requirement for this.
Front page images
Image height has no requirements.
Recommended width: 1920 pixels or more.
Images smaller than 1500px in width may appear blurry.
For banners with several images, it is important that the images have the same dimensions.
They will be large enough if you divide the width by the number of images.
For example:
2 photos: 1920/2
4 photos: 1920/4.
Checklist for Error Messages
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Possible error can be image is to big
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The image is a broken JPG file, to test use: https://jpg.repair/