SEO image optimization
SEO image optimization

SEO Image optimization:

Image is an important part of web content like blog post. Remember the old saying “A picture is worth a thousand words”.  In a blog post, image can give readers a clear idea to understand the topic. In some cases, without images the post becomes meaningless. Search engines also bring all the images of your blog to the image search result pages. If you share the image in the blog in a way of the best search engine friendly following the rules of SEO, then there is a possibility of getting many visitors from that image. Thus by doing accurate image optimization, your post also can grow a lot of traffic from Image Search.

How to do Image Optimization?

Optimizing the image of a blog post is not a very difficult task.  In fact, we do not understand the importance of this issue, so we avoid it in most cases. Image SEO includes image quality, type, size, and load time, optimization of alt text and keywords in image file names etc.  However, Google search engine is suggesting to use the image inside the post in line with the blog by following image SEO properly. So, it is necessary to do Image Optimization for the blog by following the simple steps given bel

1. Choosing unique image:

The unique images play an important role in search rankings. Always try to use unique image in your post and Google will certainly reward it.

If you have stock images of others and that is needed, use it by modifying some features instead of using it directly. That will be considered as unique. You can also use others image by giving proper honor to copyright otherwise, Google Image Search engine will not rank the image.

 2. Image type:

There are three most commonly used image file types to use in websites. They are JPEG, PNG and GIF.  Always choose the right image format and your site will look better, load faster and keep a power in ranking in image search. JPG or JPEG stands for ‘Joint Photographic Experts Group while PNG stands for Portable Graphics Format. JPG is a lossy compressed file format while PNG supports lossless compression by default. So, JPG or JPEG produces smaller file size and keeps the image quality as high as possible. Therefore, JPEGs are considered usually more SEO-friendly than PNGs when you don’t need transparent backgrounds. For animation, GIF and PNG show better performance.  

3. Image files size:

Image file size affects page load time in browser. So, it is important to use image of right size in the blog. Image size is related to the dimensions of an image and  its file size. Dimension should be no larger than 2560 pixels in width. File size affects in SEO since it relates with the loading time of a page. The image file size under 100kb is the best preferable in good SEO.

4. Image file and folder name:

Image Name has an effect on image optimization. When you are going to name your image, you never forget to write the image file name or folder name relevant to the post or the subject of the image or you can also use keyword in that purpose for having a power in SEO.

In case of writing Image Name, use a Short Hyphen (-) after each word with the Small Letter.

5. Image alt attribute

Search engines can’t read the image while crawling the site, meaning they can’t understand what you mean by that image.  If you optimize the image properly by using alt attribute, search engine able to understand your image to index and rank it well in search result. So, image optimization using Alt Tags is an important issue in SEO.

Google guru Matt Cutts discusses how best to optimize your image for Google. Here, Matt Cutts discusses the alt attribute.

<img src=”shaving-cream.jpg” alt = “shaving cream (23480-23)” width=”500” height=”700”>

 Google has no official guidelines in favor of writing text for alt attribute. But you can write in such way about your product so that Google can clearly understand your product names and serial/product numbers.


6. Image title


The image title attribute is simply used to provide an image with a title. It isn’t important for SEO purpose of image optimization. Generally, when you bring the mouse cursor over the image, a popup box will appear as text. So, the image title can persuade a visitor to perform a certain act immediately as an extra call-to-action. Also, in terms of user engagement, image titles are more helpful.

But, think a bit more about it. If you incorporate keywords with title and search engine bots do crawl them, you will find a probability to offer your images at least a promotion to rank in Google Image search results.

Plus, image titles may improve your site’s User Experience (UX) by sharing key details with visitors. It also can provide a power in SEO indirectly for having ranking factors such as session duration, page views etc.


Title attributes for WordPress:

At the time of uploading an image in Word Press, in the title attribute, it uses the image filename by default. It is not the good practices to write nothing since the system by default uses the image filename in the title attribute. You really need to take the time to write proper alt text and title text for every image. Users and search engines will grade you for this job.

<img src="filename.jpg" alt="description of your image" title="image title">

7. Image caption

A caption is the small piece of text that appears below an image. Caption may not have a direct impact on SEO of image optimization.  But, captions are visible on a website page. That is why, they can add to the user experience.

Most people avoid image captions. Also, image captions can decrease bounce rates and increase credibility with search engines.

8. Relevant image

The image should be relevant to the content of the page. Also it should relate to the focus keyword. It can describe more which cannot be told in the content due to time being. Always try to add relevant and useful images to your site for making the content user-friendly and SEO helpful.

9. Image schema markup

Google Images supports structured data for several categories. So, you can optimize your images of product for rich results. If you perform an image search for a specific product, the product schema would be eligible to appear in the results.

Currently, Google has guideline for four types of markup. They are products, recipes, videos, and GIFs. If you don’t have any of this type of content on your website, you don’t need to worry about schema markup.

10. Image site map

A sitemap is a file that contains a list of web pages of your site to make understand to Google and other search engine about the organization of your content. Search engine web crawlers like Google read this file more intelligently crawl it index it and shows it in the search result.  An XML image sitemap is created in order to increase the chances of getting in the search results of Google images.

 If you really want to ensure that every image is indexed by Google, then it will be beneficial to do, otherwise it isn’t so necessary or it is simply for crawling purpose.

Final consideration

Many people may think that the image optimization is not a big deal in website; though Google has a lot of instructions in favor of using image for each content properly.

If you do the right SEO of the image, your image will rank and your image ranking is likely to bring a lot of traffic. Maybe, it is difficult for you to come up with other contents rankings like text, videos etc. in that case, the image can give you a solid support in ranking for being proper optimization.

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