Search engine crawlers and SEO professionals look at every element of SEO and one of them is the alt attribute in the image without any text. The "alt" attribute is an HTML element of the IMG src tag since it cannot be understood by search engine spiders with just images so the alternative text is provided for the image and also visually read by people.
So the task of finding these images with alt attributes has become difficult manually due to the number of posts or pages on the site. We also know to rank better on search engine results page, image alt text is important to be visible so that it helps to understand more about the content and displays on image search as well.
Currently, the 'alt' text is represented as shown below,
<img src="ocean.png" alt="The Ocean" />
The above URL tells how the alt attribute is given for the image. There is no limit of characters for alt attribute, but keeping it simple and easy to understand for spiders are very important. In this way, the search engine spiders crawl all the images and rank the web pages by calculating the authority of the page.
To rank better on image search results, the image should be very interesting, attractive, and an alt text keyword with proper SEO optimized makes better visibility for the long term.
An alt text is important because it adds meaningful text to the images and other images that are not completely viewed on the website. Alt text are very friendly to search engine spiders to know about the images and play a significant role in ranking the images in image search results.
To find missing alt text on the website, either you need to do it all manually or you can use the image alt text checker tool. There are many online tools but the 3 best alt text checker tool for images to check alt attribute as shown below:
http://www.calculators4u.com/seo/image-alt-text-checker.php
https://linkskorner.com/image-alt-tag-checker-tool/
https://www.digitalsales.com/alt-tag-checker
Steps
WordPress is a popular Content Management System used worldwide and completely open-source, anyone can be developed. So if your website has a lot of images on the site, then manually identifying or using the tools still makes it more difficult to find alt text on WordPress websites.
So WordPress has plugin features, which you can install and activate the plugin to solve the most complicated problems. Just install alt text tools plugins to find all the missing alt text on the WordPress website by following the below steps.
There are many alt text WordPress plugins which you can update alt text:
Conclusion
Finding alt text manually takes a lot of time but the help of free online image alt text checker tools will make developers, SEO analysts and other professionals reduce time to solve the basic issue.