Websites and Images
Any website “breathes” with images, an essential implement for web builders and designers who aim, through images, illustrations and means of graphic art, at “visualizing” the content and bringing the messages home.
Images, specifically, also increase the website browsers’ concentration and, directly or indirectly, help boost the overall Search Engine Optimization capacity. Hence, quality images in websites are instrumental in terms of content reinforcement, provided that the images are eye-catching and of correct size not to hamper page load speed.
Size of Images
The tricky question here, therefore, is about the optimal size of website images.
It is largely considered that the size of website images varies depending on the developer’s goals and objectives. And it also depends on where those images are located.
Around 200 KB is believed to be an optimal size, and that full-screen background images should vary between 1500 pixels to 2500 pixels. Generally. most images should have a maximum width of 800 pixels. These parameters usually ensure proper load speed on both computers and mobile phones.
Images, specifically, also increase the website browsers’ concentration and, directly or indirectly, help boost the overall Search Engine Optimization capacity. Hence, quality images in websites are instrumental in terms of content reinforcement, provided that the images are eye-catching and of correct size not to hamper page load speed.
Other Specifics
Of course, much depends on where you place your images, in website headers, for instance, or elsewhere. The advisable image size for headers is 1024 pixels wide, whereas the best background image size is considered to be 1920 pixels wide x 1080 pixels high. The ideal ratio of 16:9 will fill the surface of the webpage without compromising the quality of the image. In terms of pixels per inch (ppi), the image should be at least 72.
The logo image size is usually 250px wide by 100px high and no larger than 320 pixels wide by 70-100 pixels high.

Format
Speed and More
It is important to note that load speed is essential for any website’s overall health and performance. In case you have slow-loading pages, visitors may leave to find a faster website. Besides, search engines like Google will rank a website with lower bounce rates and fast loading times differently, by placing them at the top or the bottom of search results.
However, the image format also matters. For photos, best are JPG file formats and SVG or PNG for logos and illustrations.
It is useful to know that PNG images are larger than JPGs which means that they will load at a slower speed. Yet, PNGs support transparency and have a higher quality than JPGs.
To make photos load faster on websites, one has to make sure they have been resized to the right dimensions.
We Are Here to Help
We are ready to help everybody needing help in building and designing websites. Just let us know if you need qualified consultancy, assistance and advice on web building, image sizes and file types, and compression rates and generally on creating impactful websites and optimizing them for SEO. We will roll back our sleeves to sit down beside you to discuss your vision and needs.