How to Generate Alt Text for WordPress Images Automatically with AI

SEO Optimization
Keyword-relevant ALT text on your website’s images helps search engines like Google, or even LLM tools like ChatGPT, Google Gemini, Perplexity, Claude AI, and others to better understand your website content and its context. If you have descriptive alt text on your website’s images, it can also help you rank higher in these search engines and AI online tools. I would also say that the claim that alt text boosts SEO is true. You may have also heard of GEO or AEO recently, that stand for Generative Engine Optimization and Answer Engine Optimization. That means optimizing your website’s content for not just traditional search engines like Google or Bing but also for AI chatbots, which I have mentioned earlier in this article as well.
Accessibility Compliance
To comply with the new accessibility laws like WCAG (Web Content Accessibility Guidelines) or ADA (Americans with Disabilities Act) regulation, it is important to have alt text on your website’s images that describes the content of your images accurately. It is important for people that experience vision impairment or use screen readers. These people should not be discriminated against, and that is why laws like these start to exist, and we need to comply with them. My online tool Imagerr AI can help you improve your website’s accessibility score by generating the alt text for your website’s images automatically with AI.
Step-by-Step Tutorial on How to Create Alt Text for Your WordPress Website
Below I will try to guide you through the complete process on how to install the Imagerr AI WordPress plugin and how to use it.
Note: If you prefer a video tutorial, I also have a YouTube video that explains the whole process easily. You can check it out:
https://www.youtube.com/watch?v=6OMw2V94LsM
And in case you would rather have a thorough written text tutorial, just read on below.
1. Install the WordPress Plugin
In your WordPress admin panel on your website, navigate to Plugins > Add New Plugin and search for “Imagerr AI.” Then click the “Install Now” button. After that, click “Activate” to activate the plugin.

2. Start Free Trial
Register with your email on imagerr.ai/register-user. After that, log into your Imagerr account and copy your API key by clicking on the green “Copy” button.

Now go to Imagerr AI > Settings in your WordPress dashboard and paste your API key into the “API Key” field. After that, click the “Save Settings” button at the bottom.
Small note: It can sometimes take up to 5 minutes for the API key to work. So please just be patient, and give it a few minutes if it doesn’t work for you instantly.

3. Purchase a Credits Package
If you have decided to buy a credits package, simply go to imagerr.ai/#pricing and choose a plan that would fit your needs. Then just make the payment. Remember that when you run out of your credits, you can purchase another credits pack anytime.
Please note that it can sometimes take a few moments for the credits to start showing up in your account.
4. Set the Plugin Settings
When you navigate to Imagerr AI > Settings in your WordPress dashboard, you will see there some settings for the plugin, like, for example, meta prefix & suffix, auto generate on upload, generate title, caption, description, and the language for your alt text (it should be pre-selected automatically based on your WordPress website’s main language). Also, more features may be added here in the future.
5. Use on One Image
If you want to use the plugin on just one or two particular images in your WordPress media library, simply just open that particular image and click the blue button “Update with Imagerr”. And that’s it.

6. Use on Several Selected Images
In case you wish to generate the alt text for just a number of hand-picked images from your media library, simply just bulk select the appropriate images in your WordPress media library, and after that click the “Generate Alt text” button. Or just choose “Generate Alt text” from the Bulk actions drop-down for your selected images in the grid view of your media library.
7. Auto-generate on Upload
If you want to have the alt text (and the title, caption, and description as well) generated automatically for your WordPress media library images right when they are uploaded, there is an option for this too. Just tick the “Auto Generate on Upload” option in the plugin’s settings.

8. Bulk Generator
This feature of the plugin is used when you have many images without alt text on them. Or when you might have alt text too but want to change or update it. To use it, simply go to Imagerr AI > Bulk Generator and click the “Update Meta” button to run it.
The option “Replace on posts” ensures that the alt text gets added to your WordPress blog posts’ or pages’ HTML code on which you have your images placed.

Please note that if you have thousands of images, the image alt text bulk generation process can take even several hours.
Benefits
If you are wondering who may benefit from these solutions of my WordPress plugin, it can be people like, for example, photographers, artists, or web designers. These are people who mostly create websites with images showcasing a portfolio of their work. Whether they are photographers displaying their photos or web developers building websites for their clients. Generating alt text for their images automatically with the artificial intelligence will sure make their work easier. If they have thousands of photos or images, this tool can save them hours of work writing all these texts manually. Moreover, besides the alt text, the plugin can generate titles, captions, and descriptions as well.
Conclusion
I believe that you will find my tool helpful. Feel free to go ahead and check it out. The AI still amazes me, even today, when I think of what all is possible to achieve with it and how it can make our lives a lot easier. That is also why I have decided to create this online AI tool and WordPress plugin.
WordPress expert, AI enthusiast, and Imagerr AI founder. I have been building WordPress websites, doing SEO, and affiliate marketing since 2007. Recently I also started my own SaaS projects, like this website or this WordPress author box. When I'm not working on my projects, I'm probably riding my bike.
