Image Optimization

A picture is worth 1000 words. Having images on your content has many benefits, it helps break up your text, makes it look professional, promotes social sharing, improves SEO, helps your page rank on the images tab of the search engines, and many others. And with the right image dimensions it can help your page get more traffic. Here are some Image SEO tips to get eyeballs on the images.


i)Optimize image file size

It is recommended that image file size is around 200 kb per image

Tools for image file optimization

  1. kraken.io

  2. Imagify - WordPress plugin

  3. Short pixel -  WordPress plugin

  4. Wp smush -  WordPress plugin


ii)Name All Image file appropriately 

Google has consistently advised that descriptive file names give them clues on what the image is about, so instead of uploading an image with a name IMG00023.jpg, you want to have a descriptive name like Women Training Dog.jpg.

Google tool for analysis image: https://cloud.google.com/vision/docs/drag-and-drop

Here the above image has been analyzed with google image  analyzing tool.And as you can see, this is clearly fried chicken or fried drumsticks to be specific to us as humans. But the Vision API has not recognized this exactly, it has only recognized this as mainly food and 60 percent comfort food. Hence, having a descriptive file name gives clarity to the search engine. So before you upload any images to your site, you've got to make the file name descriptive.


iii) Image ALT text

Alt text (alternative text) is a written description of an image that helps visually impaired users understand the content of the image using screen readers (a kind of software which is developed for reading the screen). It is also used by search engines to index images for better SEO. Good alt text is concise, descriptive, and explains the purpose of the image.

Alt text is written in coding form. But in wordpress there is an option where we put alt text.


iv) Image sitemap

An image sitemap is a specialized type of sitemap that helps search engines discover and index images on your website. It provides information about the images, such as their location, title, caption, and license, which can improve the visibility of your images in search results.

Benefits of an Image Sitemap

  1. Improved SEO: Enhances the discoverability of your images by search engines.

  2. Image Indexing: Ensures all images, including those hidden in JavaScript or in less accessible parts of your site, are indexed.

  3. Supports Metadata: Includes information like captions, titles, licenses, and geographical location.

  4. Enhances Image Search Visibility: Helps your images rank higher in image searches, driving more traffic to your website.

How to Generate an Image Sitemap?

Manual Method

  1. Create an XML File:

Write a list of URLs for your images using the XML sitemap format.

Include metadata such as captions, titles, and image locations.



Example:

<url>

  <loc>http://www.example.com/page1.html</loc>

  <image:image>

    <image:loc>http://www.example.com/image1.jpg</image:loc>

    <image:title>Example Image</image:title>

    <image:caption>This is an example image.</image:caption>

  </image:image>

</url>



Validate the Sitemap:

  • Use tools like XML Sitemap Validator to check for errors.

Submit to Search Engines:

  • Upload the sitemap to your website’s root directory (e.g., https://www.example.com/sitemap-images.xml).

  • Submit it through tools like Google Search Console under Sitemaps.

Automatic Method

Use tools or plugins to generate image sitemaps for larger websites or when manual creation is impractical.

  1. WordPress Plugins:

    • Yoast SEO: Automatically creates an image sitemap as part of its sitemap generation.

    • Rank Math: Generates image sitemaps with advanced settings.

    • Google XML Sitemap: A simple plugin for creating sitemaps.

  2. Online Tools:

    • XML-Sitemaps.com: Generate free image sitemaps by entering your website URL.

    • Screaming Frog SEO Spider: Crawl your site and export an image sitemap.

  3. CMS-Specific Tools:

    • For eCommerce sites like Shopify or Magento, there are specific extensions and apps available.

Steps for Generating Automatically

  1. Install a plugin or tool suitable for your website platform.

  2. Configure the plugin to include images in the sitemap.

  3. Generate the sitemap and review it for accuracy.

  4. Submit the sitemap URL to Google Search Console or Bing Webmaster Tools.

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