AI Image Alt Text Generator

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AI Image Alt Text Generator

by Rafał Całka

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Description

Generate image alt text in your site’s language to help improve accessibility and SEO. Uses the WordPress AI Client with your choice of AI provider, including OpenAI, Google Gemini, and Anthropic Claude. Configure a provider with an image-capable model under Settings Connectors.

Features:
– On-demand generation in the image block and media library
– Bulk generation in the media library and gallery block
– Optional automatic generation on upload
– Support for multiple AI providers and vision models
– Custom instructions and model selection under Settings Media

Integrations

Polylang: automatically detects the language of the image or the post being edited.

External Service Usage

This plugin relies on the WordPress AI Client to generate alt text for images. Depending on which AI provider you have configured, your images will be sent to that provider’s API. Please review the terms of use and privacy policy of your chosen provider before using this plugin.

For Developers

See the developer documentation for filters and Abilities API usage.

  1. Install the plugin via Plugins Add New, or upload the plugin ZIP there.
  2. Activate the plugin.
  3. Configure an AI provider with an image-capable model under Settings Connectors.
  4. Open Settings Media to choose a model, add custom instructions, or enable automatic generation on upload.
  1. Bulk alt text generation.

    Bulk alt text generation.

  2. Generating alt text for an image in the media library.

    Generating alt text for an image in the media library.

  3. Generating alt text automatically on upload.

    Generating alt text automatically on upload.

Is there a cost associated with using this plugin?

It depends on the AI provider you have configured. Most providers charge per API request. Please check your provider’s pricing page for details.

Works very well

By bjf2000 on August 23, 2026

Certainly does the job, and it continues to be updated as appropriate. Appreciated.

Good, but some features lacking

By piotrk87 on November 5, 2025

It’s a very basic plugin which does its job, but it definitely needs to have an option too choose the language in which the alt text is generated.

Excellent, no scam, does exactly what it says!

By makkabi on June 26, 2025

This plugin has a good UI with all the features and options that you need, but nothing more. It doesn’t want to sell you some “Premium” features, but lets you enter your own API key. Highly recommended!

Great plugin

By kailonka on September 30, 2024

Great and easy to use plugin. Thanks for this.
I just wished for one little improvement.
The additional prompt, which I can write while in bulk edit, can that be saved? So I do not need to enter it again?
Or maybe let us define a user prompt in the Settings -> Media, where we provide our API key. That would be awesome.

Works well

By gavin310 on April 4, 2024

Installed it and put in my OpenAI API key and it worked perfectly.

Excellent Plugin!

By jemsz on March 25, 2024

Amazing! Great work Rafal! Super easy to use with GPT. I look forward to the bulk image update! Thanks

Works Perfect – Thank you.

By strid3r on February 26, 2024

Please consider adding:

1. a bulk update function

2. Ability to add to caption and title as well.

Thank you.

For the plugin’s changelog, please see the Releases page on GitHub.