How to optimize Images for gallery page: Better Speed and SEO

Hi, I have a company that executes garden designs, and visual aspects are crucial for attracting clients (people buy with their eyes). Therefore, I am considering two aspects related to optimizing images on the website—mainly in the gallery, which contains a lot of heavy files, to maintain appropriate page speed (for SEO and user experience on mobile).

  • Currently, the single gallery page of my site has about 12 visualizations in a Swiper (at the top of the page), each image averaging 200-400KB (depending on the image). The images are in webp format (compressed from 5-10MB JPGs). I achieved satisfactory quality by reducing the size without excessive quality loss (I tried to balance it).
  • Additionally, there is a short SEO article describing the garden below (with images related to the description). All these elements cause the total image weight on the page to be around 4-6MB.
  • Here is an example of single gallery page: Projekt ogrodu Kraków 2000 m2

I use the SiteGuru application for SEO audits and follow its recommendations.



  1. What should I do to speed up the website on mobile devices? (Page speed shows values around 40-70%, while on a computer it is about 90%) - should I solve other technical issues?
  2. Should I further reduce the quality to reach image sizes of 100-200KB?
  3. Should I change the way images are presented? (Instead of the Swiper at the top of the page, a simple gallery with lower quality images, and upon clicking, a Gallerybox with higher quality images?)
  4. What should be the resolution of the images in my galleries?
  5. Does Divhunt provide the option to automatically scale image sizes depending on the device? Can I add this as custom code somehow?
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Hello! To give some feedback that would help someone in the future.

  1. Changed image quality and make it proper size for gallery grid ( 2000px to 400px) score jumped from 72-76- not much

  2. Gave size to all elements (mostly 100%, 1280px), changed the sizing of all texts, and fonts appropriate for mobiles

almost removed Cumulative layer shift, the result is that score jumped to to 91 from 76

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