As we were discussing about how to do image optimization in its preceding part, we missed to talk about 5-more image optimization ways. Here are the ways to promote images of a site, especially those of an ecommerce site.


You may ask why we are referring this technique to be special for ecommerce websites. First of all, any ecommerce websites put on display much more number of images to show the appearance or semblance of the products they want to sell. Secondly, an ecommerce site seeks to hinge more on image displaying and promotion across the web than websites of various other nature. As a result of this, image optimization becomes a staple promotional technique for ecommerce websites. But, this does never denote this is redundant for all other types of websites.

Here are the essential points to be considered of while optimizing an image.

Choosing Appropriate Image File Type:

Choose image file type according to the right situations. While posting images, you will come across three common file types. They are JPEG, GIF, and PNG. With having these three different types, they impact similar image on different file formats differently.

Let’s start with the JPEG or .jpg images. The .jpg images are a kind of an old file format and has become the de facto benchmark image of the Internet. JPEG images are compressible commendably, resulting in quality images with small file sizes.

Compared to the JPEG images, the GIFs or .gif images stay much ahead in terms of their quality. They are used for simpler images such as decorative images and icons. Most importantly, GIFs support animation. This is why GIFs are very popular for bigger and more photo-esque image.

Importance of PNG images have been getting riveting acceptance from us these days as alternative to GIFs. PNGs support much more color than GIFs and, more importantly, they don’t devolve into overtime with re-saves like JPEGs. Yes, the PNG file size is much larger than what you may notice with JPEG images. This is why one needs to be careful about when choosing PNG file size.

Tips to remember while selecting file formats:

· For most ecommerce situations – JPEGs will be your best bet for their best quality and the smallest file size.

· Don’t use GIFs for large product images as the file sizes become too large to manage and reduce later. Use this image file type for thumbnails and decorative images.

· PNGs is said to be the best alternative to both GIFs and JPEGs. When product photos are intended to make in PNG format, using of PNG-8 will be better than PNG-24. PNGs outdo decorating images in simple way due to their extremely small file size.

Now, our focus will be on how to handle thumbnail images:

Majority of ecommerce websites prefer using thumbnail images. Doing so brings the facility of quickly scanning category pages. Thumbnail images are surely good but are considered as silent killer due to taking irritatingly long time to load pages. This feature could be a setback for ecommerce sites as taking longer time to load pages category-wise might drive off just another customer.

Thumbnail image file size has to be kept as small as possible. Cumulative effect of thumbnails could have a huge impact on page loading time. So, try to have quality slide in favor of a lower file size.

Use different alt tag text for thumbnail images from similar versions of bigger images. Get the thumbnail image indexed instead of the large image, which need to be left out to the alt text entirely.

Use Image Site Maps:

Check whether your site uses JavaScript galleries, image pop-ups or other flashy means to enhance the general shopping experience. If it is the case, then Google image site maps must bring your site images to the notice of Google.

Do you know web crawlers cannot crawl images which are not called out in the webpage source code? This is why it is your responsibility to let them know about the images. So, make a list of their location in an image site map.

To be more informed about it, go through Google guidelines for image publishing so you can help your website rank high on the search engine. As a webmaster, your prime task is to inform Google about the images on your site more and more.

Although using Sitemaps doesn’t ensure that images will be surely indexed by Google, but it must increase the chances of getting your website optimized faster. Google Webmaster Tools has a number of suggestions following which you can format your Sitemap and the images for your Sitemap correctly.

On Google Sitemaps, it is important for a webmaster to add specific tags for all of the images. A separate Sitemap can also be created to list images. While working on it, add all necessary information with using specific tags. Follow the guidelines which Google advises while you are creating a Sitemap with image information.