Optimize Images For SEO

Image SEO is a crucial but often neglected part of website optimization. It can significantly enhance a site’s visibility and user engagement. Most web searches, including Google Image Search, are greatly affected by image optimization. Thus, optimizing images is both an aesthetic and strategic necessity.

This guide delves into the best practices for image SEO. We’ll cover key techniques to make images visible and impactful. Let’s begin.

What Is Image Optimization for SEO?

Image optimization for SEO is making your images more appealing and accessible to search engines like Google. This practice involves several key steps, from selecting the right format and file size to incorporating accurate and descriptive alt text.

The objective is to guarantee that every image on your website enhances the user experience and has a favourable impact on your site’s collective search engine rankings.

Why Image SEO Matters?

Images are much more than just visual decorations; they are powerful tools that can significantly impact a site’s user experience, visibility, and Google content rankings. Here’s why prioritising image SEO is crucial:

Enhanced Visibility in Search Results

Studies reveal that around 38% of Google’s search result pages display images. This prevalence highlights the importance of images in search queries.

By optimising your images, you increase the chance of them appearing in these results, thus offering a dual channel of visibility for your site – through text and visual content.

Influence in E-commerce

For e-commerce, images are not just essential; they are decisive. They play a critical role in guiding users’ purchasing decisions. High-quality, well-optimized images can differentiate between a conversion and a customer lost to a competitor.

Impact on User Experience

The user experience of a website can be greatly enhanced or hindered by its images. Optimized images enhance user experience through fast loading times and aligning with users’ search intentions. In contrast, bulky, unoptimised images can decelerate a website, resulting in an irritating user experience and higher bounce rates.

Site Speed and Performance

The size and format of images directly affect site speed. Browsers need to download these images to display them, and large image files can significantly slow down this process. This not only affects user experience but also impacts bandwidth consumption.

Google prioritises websites that load quickly. Image SEO is integral in this aspect, as it involves optimizing web images to ensure they are easily readable and findable by search engines. 

Also Read: 10 Reasons Why You Should Learn SEO

Tips To Optimize Images For SEO

Image by zaozaa09 on Freepik

Here are some image optimisation best practices to implement on your site:

Pick the Right Image Format

Choosing a suitable format is critical for image SEO. Different formats like JPEG, PNG, and WebP offer varying balances of quality and file size. JPEGs are ideal for photographs due to their colour depth and compression efficiency.

PNGs are preferable for images requiring transparency, such as logos. WebP delivers high-quality pictures in smaller file sizes, making it SEO-friendly and increasingly widespread for web use. The right choice depends on the image content and the desired balance between quality and speed.

Compress Your Images

Image compression is vital for lowering file size without greatly compromising quality. Large picture sizes may delay page loading times, reducing user experience and SEO rankings. Tools like Adobe Photoshop, TinyPNG, or online compressors allow you to compress and resize images while maintaining an acceptable level of quality.

For websites in the WordPress platform, there are various image compressor and optimization plugins like EWWW Image Optimizer, ShortPixel, Imagify, and more. This step is particularly important for websites with numerous images or those in the e-commerce sector where image quality can influence purchasing decisions.

Incorporate Unique Images

Using unique images on your site rather than stock photos can significantly enhance your SEO strategy. Distinctive and original images tend to more effectively engage users, lower bounce rates, and extend the duration of their stay on your site.

They also boost search rankings as search engines prefer authentic content. Creating custom graphics, taking original photographs, or modifying existing images can give your site a competitive edge.

Be Aware of Copyright

Unauthorised use of copyrighted images can lead to legal issues and negatively affect your SEO efforts.

Always confirm that you have the authorisation to use a picture, whether by purchasing stock photographs, utilising royalty-free images from reliable sources, or gaining specific permission. Remember to attribute the creator, if necessary.

Choose the Correct Image File Name

Optimizing the file names of your images is a simple yet effective SEO technique. Descriptive, keyword-rich file names help search engines comprehend what the image is about and its relevance to your content.

For instance, instead of a generic file name like “IMG_001.jpg”, a descriptive name like “fresh-organic-apples.jpg” gives search engines more context, enhancing the SEO value of the image.

SEO Optimize Image Alt Text

Alt text, short for alternative text, is a critical component in image SEO. It provides a textual description of an image for search engines and users who cannot view the images directly, such as those using screen readers. An SEO-optimized alt text should be concise yet descriptive, incorporating relevant keywords without overstuffing.

It should accurately describe the image content, aiding search engines in understanding the picture and its context within the page. This not only increases accessibility but also boosts your site’s SEO efficiency.

Set Specific Dimensions for Images

Defining the dimensions of your images is a key step in optimisation. Specifying image dimensions (width and height) in the HTML code helps the browser to allocate space for the images during the page load, thus reducing layout shifts and improving user experience.

Moreover, correctly sized images ensure that they are displayed properly without unnecessary scaling, which can degrade image quality and impact the page’s aesthetic appeal.

Use Responsive Images

With the growing usage of mobile devices to get to the internet, it is critical to ensure that your photos are responsive. This implies they should be able to adapt to diverse screen sizes and resolutions effortlessly.

Using techniques such as CSS media queries, srcset attributes in HTML, or flexible image containers can make your images responsive. This ensures a great user experience across all devices and contributes to better mobile SEO, a key factor in Google’s ranking algorithm.

Integrate Images Into Your Website’s Sitemap

Adding images to your website’s sitemap can significantly improve their visibility to search engines. An image sitemap supplies search engines with more details about the images available on your site. 

It’s especially useful if your site uses JavaScript galleries or image pop-ups that are not easily discoverable by web crawlers. 

Utilise an Image CDN

An Image Content Delivery Network (CDN) can significantly enhance your site’s load times and performance. It operates by storing copies of your images on multiple servers worldwide, reducing the distance between the server and the user.

This leads to quicker image loading times, vital for SEO since page speed is a key ranking factor. Plus, some CDNs provide image optimization services like automatic format selection and compression, further boosting your site’s performance.

Also Read: How Important Is CTR For SEO?

Let ACERO Help With the SEO Optimisation of Your Website

Having a strong online presence takes more than simply a well-designed website. It requires a thorough SEO approach geared to your business’s unique needs.  At ACERO, we provide a comprehensive suite of SEO services aimed at improving your website’s performance in all aspects.

Our seasoned experts specialise in delivering bespoke SEO solutions, ensuring that every component of your website, from content to the image, is optimized to align with the latest SEO best practices.

Our approach is holistic and data-driven focused on achieving tangible results. We understand your business aims, target customers, and competition in the specific field.

This allows us to craft a tailored SEO strategy that increases your website’s visibility in search engine results and enhances user engagement and conversion rates.

Choose ACERO as your SEO partner and experience a comprehensive service that covers every angle of search engine optimization. Let us guide you through the complexities of SEO, transforming your website into a powerful tool that drives growth and success.


Optimizing images for SEO is crucial as it boosts your website’s prominence in image search outcomes, attracts more visitors to your site, and improves user experience by guaranteeing images load swiftly and correctly.

Some best practices for image optimisation for SEO include optimizing file names, adding descriptive alt text, using relevant image titles, and compressing images without sacrificing quality.



For SEO purposes, it’s recommended to name image files with descriptive and relevant keywords related to the subject matter of the image, separating words with hyphens for better readability.



Compressing images for SEO is essential as it helps reduce the image file size, which in turn improves website load times, enhances user experience, and positively impacts search engine rankings.



You can ensure your images are indexed by search engines by providing descriptive file names, adding relevant alt text and titles, creating an image sitemap, and ensuring that the images are placed within crawlable content on your site.