On Page SEO

Image SEO: Implement Best Practices to Improve Search Results.

When you create content for your website. It is crucial to add images to the content for visual appeal and effectiveness. Images play an important role in enhancing user experience and engagement. This article will discuss all about Image SEO’s best techniques to optimize images of the website.

To maximize the potential of images, you must optimize images search engines and enhance user experience. This ensures they positively impact your website’s overall SEO performance, improving its visibility.

This comprehensive guide will explore the key aspects of Image SEO. Our goal is to equip you with practical insights that will help enhance your website’s user experience and visibility, making it more accessible and appealing to visitors.

image seo

Understanding Image SEO

Image SEO refers to optimizing images on your website to improve search engine visibility, website performance, and user experience. Properly optimized images can lead to higher search rankings, increased organic traffic, and better accessibility for users with disabilities.

Benefits of optimizing images

  1. Improved website performance: When you optimize images, they load faster, reducing page load times and improving overall site speed. That enhances the page experience on the website.
  2. Increased organic traffic: By optimizing images with relevant keywords and metadata, you can help search engines understand the context of your images. Leading to higher rankings and more organic traffic.
  3. Enhanced user experience: Well-optimized images provide a better user experience by ensuring quick page loads, clear visuals, and accessible content.
  4. Better accessibility: Including descriptive alt text and other metadata helps users with visual impairments understand the content of your images through screen readers and other assistive technologies.

Key Components of Image SEO

Optimizing images for search engines involves several key components, including image file formats, file sizes, dimensions, alt text, captions, and structured data.

  • Image file formats
  • Image file sizes and compression
  • Image dimensions and aspect ratio
  • Image file names
  • Lazy loading

Image SEO Best Practices

As you work on optimizing your images, consider the following best practices:

Choose the right file format

Select the appropriate file format for each image based on its purpose and desired quality. JPEG suits most photographs. PNG is better for transparent images or those requiring lossless compression. WebP is a newer format that offers superior compression and quality for both lossy and lossless images. It is an excellent option for modern websites. GIFs are ideal for simple animations and small graphics.

  • JPEG (Joint Photographic Experts Group) is the most commonly used image format for photographs and other images with a wide range of colors. This format uses lossy compression to reduce the file size while retaining the quality of the image. JPEG images can also be saved with different quality levels to optimize their size and appearance. JPEG is ideal for photographs, graphics, and other complex images.
  • PNG (Portable Network Graphics) is a lossless image format that supports transparency. It is ideal for images with simple graphics, text, or solid colors. PNG images can be saved in two formats: PNG-8, which supports a maximum of 256 colors, and PNG-24, which supports millions of colors. PNG is ideal for images with transparency or requiring high-quality graphics.
  • GIF (Graphics Interchange Format) is widely used for simple animations and tiny graphics like logos, icons, or buttons. It supports lossless compression and a maximum of 256 colors. This makes it an excellent choice for small and simple graphics requiring animation.
  • WebP (NextGen Images) is a newer image format that offers superior compression and quality for lossy and lossless images. WebP images can be significantly smaller than their JPEG or PNG counterparts, resulting in faster page load times and improved website performance. It is ideal for modern websites and is supported by most major browsers.

Use Alt Tag

An image alt tag, also known as “alt text” or “alt attribute,” is an HTML attribute added to an image tag. It serves as a short description that provides context for search engines and visually impaired users who rely on screen readers. Alt tags are displayed when images fail to load or when users hover their cursor over an image. They play a crucial role in helping search engines understand the content and relevance of your images, which ultimately improves your site’s overall SEO performance.

Why Are Image Alt Tags Important?

There are three primary reasons why image alt tags are essential for image SEO:

  • Accessibility: Alt tags improve your website’s accessibility by providing context for visually impaired users who use screen readers. Including a descriptive alt tag ensures that everyone can understand and engage with your content regardless of their ability to see it.
  • User Experience: Alt tags can enhance the user experience by offering a fallback when images fail to load. This can occur due to slow internet connections, broken image links, or users who have disabled images in their browsers.
  • Search Engine Optimization: Search engines, such as Google, use alt tags to understand the content and context of images on your website. Properly optimized alt tags can help improve your site’s visibility in search engine results, driving more organic traffic to your website.

How to Optimize Image Alt Tags for Better SEO

  • Be Descriptive: Write a brief but accurate description of the image that conveys its content and purpose. This will help both search engines and users understand its relevance.
  • Use Keywords: Incorporate relevant keywords into your alt tags to improve your image’s ranking in search engine results. However, avoid keyword stuffing, as it can negatively impact your site’s SEO.
  • Keep It Short: Aim for an alt tag length of around 125 characters, as screen readers typically truncate longer descriptions.
  • Avoid Redundancy: Don’t use phrases like “image of” or “picture of” in your alt tags, as they are unnecessary and take up valuable character space.

Bad Practice (empty alt tag)

<img src="/dog.jpg" alt="">

Bad Practice (missing alt tag)

<img src="/dog.jpg">

Bad Practice (Keyword Stuffing)

<img src="/dog.jpg" alt="dog, street dog, my dog, best dog">

Bad Practice (undefined file name)

<img src="/125422.jpg" alt="">


<img src="/labrador-dog.jpg" alt="Labrador dog">


<img src="/labrador-dog.jpg" alt="Labrador dog Playing with ball">

Optimizing your image alt tags with descriptive, keyword-rich text can enhance your website’s visibility in search engine results and create a more inclusive user experience. Don’t overlook the power of image alt tags as you work to improve your website’s overall performance.

Other Important Image Optimization

  • Optimize image file sizes and compression. To improve website performance, reduce image file sizes by compressing and resizing them without sacrificing quality. Use image editing tools to optimize your images or online services and plugins that automatically compress images upon upload.
  • Use descriptive file names. Ensure your image file names are descriptive and include relevant keywords accurately representing the image’s content. This will help search engines understand the context of your images and rank them accordingly.
  • Provide captions and titles when necessary. When relevant, add captions and titles to your images to provide additional context and information. Incorporate relevant keywords further to improve the search engine visibility of your images.
  • Implement structured data for images. Use structured data and schema markup to provide search engines with more accurate information about your images. This can improve your images’ visibility in search results and increase the likelihood of them being displayed in rich search results, such as Google Images.
  • Utilize responsive images with lazy load for different devices. Implement responsive images using HTML5‘s “srcset” attribute or other techniques to display your images optimally on various devices, screen sizes, and resolutions. This will enhance user experience and ensure consistent image quality across different devices.
  • Use lazy loading to defer the loading of images not visible in the user’s viewport. This technique can significantly improve page load times and overall site performance, leading to a better user experience and higher search engine rankings.

Tools and Resources for Image SEO

As you optimize your images, consider using the following tools and resources:

  • Several tools can help you optimize your images, such as Photoshop, GIMP, and online services like TinyPNG, Compressor.io, and 11zon.com. These tools can help you resize, compress, and edit your images for optimal performance.
  • Popular content management systems like WordPress, Joomla, and Drupal offer plugins that automatically optimize your images upon upload, making the process more efficient and streamlined.
  • Use tools like Google PageSpeed Insights, GTmetrix, and WebPageTest to evaluate your images’ performance and identify improvement areas. These tools can help you test and measure the success of your image SEO efforts.

Following this comprehensive guide and implementing the best practices, tools, and resources for image SEO can significantly improve your website’s search engine visibility, performance, and user experience. Optimizing your images is a crucial aspect of your overall SEO strategy and should never be overlooked.

Advanced Image SEO Techniques

As you become more proficient in optimizing images for search engines, you may want to explore some advanced techniques to improve your website’s visibility and performance further:

A. Implementing image sitemaps

An image sitemap can help search engines discover your images more quickly and index them faster. Create a dedicated image sitemap and submit it to Google Search Console and other search engines to improve the discoverability of your images.

B. Leveraging Content Delivery Networks (CDNs)

Using a Content Delivery Network (CDN) can help improve your website’s performance by serving images from a server geographically closer to your users. This results in faster image loading times and a better user experience, positively impacting your search engine rankings.

C. Utilizing image SEO for social media

Optimize your images for social media platforms by using the appropriate dimensions, file formats, and Open Graph tags or Twitter Cards to ensure your images are displayed correctly when shared on social networks. This can lead to increased engagement and traffic from social media sources.

D. Analyzing image SEO performance with analytics

Monitor your image SEO performance by tracking metrics like organic traffic, impressions, and clicks in GSC, Google Analytics, etc. Regularly analyze the data to identify trends and areas for improvement. The data can also help you understand the overall impact of your image optimization efforts on your website’s performance and search engine visibility.


Optimizing images for search engines is a critical aspect of your overall SEO strategy and should never be underestimated. Following the guidelines and best practices outlined in this comprehensive guide, you can ensure that your images contribute positively to your website’s search engine rankings, performance, and user experience.

Stay up-to-date with the latest techniques and trends to maintain a competitive edge and maximize the benefits of your image SEO strategy. Monitor and adjust your image optimization efforts to keep pace with evolving search engine algorithms and user preferences. This will help you ensure your website remains visible and relevant to your target audience. In case of any doubt, queries, feel free to ask in the comment section below.

Ashok Sihmar

Ashok Kumar working in the Search Engine Optimization field since 2015. And worked on many successful projects since then. He shares the real-life experience of best SEO practices with his followers on seoneurons.com. You also can learn Advance level SEO for WordPress, Blogger, or any other blogging platform. Stay tuned.

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