Beskriuwing

AI Alt Text Generator automatically writes clear, descriptive alt text for every image on your WordPress site — improving accessibility compliance (WCAG 2.2, ADA, Section 508, and the European Accessibility Act) and image SEO at the same time. It uses leading vision AI from OpenAI and Anthropic with your own API key, so generation is transparent and at-cost with no per-image fees or vendor lock-in. You choose the provider and model — the plugin ships with a fast, low-cost default for each.

Alt text is required for accessible, legally compliant websites, and it helps search engines understand your images. But writing it by hand across an entire media library rarely happens — so this plugin does it for you, in bulk or automatically on upload.

It produces concise, WCAG-aligned descriptions (no “image of…” filler, sensible length) and can fold in the page context and your SEO focus keyphrase for sharper, more relevant alt text. It pairs perfectly with accessibility audit tools that flag missing alt text — this is the plugin that fills the gaps.

Key Features:
– Accessibility & compliance: WCAG-aligned output to support ADA, EAA, and Section 508 requirements
– SEO keyphrase integration: automatically weaves in focus keyphrases from Yoast SEO, Rank Math, and SEOPress (without keyword stuffing)
– Page-context aware: uses the page/post the image belongs to for more relevant descriptions
– Multi-Provider Support: choose between OpenAI and Anthropic — your own API key, no lock-in
– Cost-Effective by default: ships with a fast, low-cost vision model for each provider — and you can switch to any model your provider offers
– Bulk Processing: generate alt text for your whole library at once, or automatically on upload
– Custom Prompts: tailor the AI prompt to your brand and needs
– Multi-Language Support: generate alt text in many languages
– Testing Feature: preview prompts before applying them to images
– WP-CLI Support: configure providers and bulk-generate from the command line
– Developer-friendly: extensible via action/filter hooks for custom integrations and add-ons

WP-CLI:
The plugin registers a wp ai-alt-text command suite, making it easy to automate alt text generation across one or many sites.

# Configure a provider and API key
wp ai-alt-text activate --provider=openai --key=sk-xxxxxxxx

# Bulk-generate alt text for all images missing it
wp ai-alt-text generate

# Regenerate alt text for specific attachments
wp ai-alt-text generate --ids=12,34,56 --force

# Preview what would be processed without calling the API
wp ai-alt-text generate --limit=20 --dry-run

# Show current configuration and coverage
wp ai-alt-text status

A typical install/activate/generate workflow:

wp plugin install ai-alt-text-generator --activate
wp ai-alt-text activate --provider=anthropic --key=sk-ant-xxxx
wp ai-alt-text generate --yes

New in Latest Version:
– Optional managed-credit mode — generate alt text with no API key needed (free tier included)
– WCAG-aligned output, SEO focus-keyphrase integration (Yoast / Rank Math / SEOPress), and page-context awareness
– Optionally set the image Title, Caption, and Description from the generated alt text
– Future-proof model handling (no hard-coded model versions; configurable defaults)

Important: This plugin uses external AI services (your own OpenAI/Anthropic key, or the optional managed-credit service) to generate alt text.

AI Alt Text Generator Pro (optional upgrade)

Need automation at scale? The optional Pro add-on builds on this free plugin with:
– WooCommerce product context for commerce-aware, SEO-rich alt text
– Scheduled background scans that describe new and existing images automatically
– A coverage analytics dashboard to track your progress toward 100%
– Automatic updates and priority support

Learn more at https://store.lessbutmore.ai — the free plugin remains fully functional on its own.

External Service Usage Disclosure

This plugin uses external AI services to generate alt text. Data (images and their metadata) is sent to your selected AI provider for processing.

Supported Services:
– OpenAI: For more information, please review the OpenAI Terms of Use and Privacy Policy
– Anthropic: For more information, please review the Anthropic Terms of Service and Privacy Policy

You can choose which service to use and are only required to agree to the terms of the service you select. The plugin does not store your images or generated alt text on our servers.

Support

For support, feature requests, or bug reports, please contact us through the WordPress plugin support forum.

Skermôfbyldings

Ynstallaasje

Upload the plugin files to the /wp-content/plugins/ai-alt-text-generator directory, or install the plugin through the WordPress plugins screen directly.
Activate the plugin through the ‘Plugins’ screen in WordPress.
Obtain an API key from your preferred provider:
- OpenAI: Visit https://openai.com and sign up to get your API key
- Anthropic: Visit https://console.anthropic.com and sign up to get your API key
Navigate to the ‘Alt Text Generator’ admin page in your WordPress dashboard.
Select your preferred AI provider and configure it with your API key.
Customize your prompt and language settings as needed.

FAQ

Does this plugin require an API key?: You have two options: use your own OpenAI or Anthropic API key (free — you pay the provider directly at cost), or use the optional managed-credit service that needs no API key at all (with a free tier). Either way works.
Can I use it without an API key?: Yes. Enable “managed credits” in the plugin settings to generate alt text without any API key — the free tier includes 50 images per month, and you can upgrade for more. Learn more at https://store.lessbutmore.ai
Is there a Pro version?: Yes. AI Alt Text Generator Pro is an optional add-on that adds WooCommerce product context, scheduled background scans that describe images automatically, a coverage analytics dashboard, automatic updates, and priority support. The free plugin is fully functional on its own. Learn more at https://store.lessbutmore.ai
What AI providers are supported?: You bring your own API key for OpenAI or Anthropic, and you can use any vision-capable model your provider offers. The plugin ships with a sensible, low-cost default for each provider and lets you change the model anytime in settings — so you’re never locked to a specific model if providers add or retire one.
Can I switch between different AI providers?: Yes, you can easily switch between OpenAI and Anthropic providers in the plugin settings. Each provider has its own API key configuration.
How does this plugin use the AI APIs?: The plugin sends images to your selected AI provider’s API, which then returns the generated alt text. This process requires an active internet connection and the transmission of data to the AI provider’s servers.
Can I generate alt text for multiple images at once?: Yes, the AI Alt Text Generator supports bulk processing of images for efficient workflow.
Can I use a custom prompt?: Yes, you can customize the prompt used to generate alt text in the plugin settings. You can also test your prompts before applying them to images.
Which provider is more cost-effective?: Both providers offer fast, low-cost vision models, and the plugin defaults to a cost-efficient model for each. You can switch models anytime in settings to balance cost and quality.
Can I use the plugin from the command line (WP-CLI)?: Yes. The plugin registers a wp ai-alt-text command suite with three subcommands:
– wp ai-alt-text activate --provider=<openai|anthropic> --key=<api-key> configures the provider and API key. Add --skip-validation to save without a live API check. (Each provider uses a fixed default model.)
– wp ai-alt-text generate bulk-generates alt text. Useful flags: --limit=<n>, --provider=<provider>, --force (regenerate existing), --ids=12,34 (specific attachments), --dry-run (preview only), and --yes (skip confirmation).
– wp ai-alt-text status shows the active provider, which keys are configured, the prompt/language, and alt text coverage counts.
Is my data secure?: The plugin only sends image data and prompts to the selected AI provider for processing. Please review the privacy policies of OpenAI and/or Anthropic for details on how they handle data.

Resinsjes

Ted Slater 30 septimber, 2025

The concept is simple … but of course what’s going on behind the scenes is incredibly complex. This plugin … just works! Amazing. Well done, Migen! You are a rock star.

og0id 12 juny, 2025

Compared to the other plugins this one is free and just what you need.

mghanei 17 maart, 2025

generated alts for all the media (200 images) in like 5 Minutes.

zdmdesigns 19 july, 2024

Does what it described with minimal hiccups. The batch generation seems to stall out a bit, but the on demand generation is great.

developersthp 10 maaie, 2024

helped with creating 100+ image alt text in less than 5 min

Lês alle 5 resinsjes

Meiwurkers & amp; Untwikkelders

“AI Alt Text Generator” is iepen boarne software. De folgjende minsken hawwe bydroegen oan dizze plugin.

migkapa

Oersette “AI Alt Text Generator” yn jo taal.

Ynteressearre yn ûntwikkeling?

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Feroaringslog

2.5.3

Settings: managed credits (no API key needed) is now the recommended option, shown first; using your own API key is presented as an “Advanced” option below

2.5.2

Fix: the “Upgrade to Pro” panel now renders inside the settings screen so it’s always fully visible (the previous admin-notice version could be covered by the settings header)

2.5.1

New: optional managed credits mode — generate alt text with no API key needed (free 50 images/month via the AI Alt Text Generator service). Bring-your-own-key remains fully supported and free.
Future-proofed model handling: no hard-coded model versions; the default model is filterable (aatg_default_model), and the deprecated GPT-4 Vision Preview was removed.
Connect and manage a managed-credits account from the General settings tab.

2.5.0

New: optionally also set the image Title, Caption, and Description from the generated alt text (toggles on the settings page)
Expanded language support from 13 to ~48 languages
Settings UI refinements

2.4.1

Fix: the “Upgrade to Pro” notice on the settings page is now fully visible (moved to the standard admin notice area)

2.4.0

WCAG-aligned alt text by default: concise, purpose-driven output with no “image of” filler and a sensible length, better for screen readers and SEO
SEO focus-keyphrase integration: automatically incorporates the keyphrase from Yoast SEO, Rank Math, and SEOPress (filterable; no keyword stuffing)
Page-context awareness: uses the title of the page/post an image belongs to for more relevant descriptions
Higher-quality, lower-cost image sampling: sends an appropriately sized image instead of a tiny thumbnail or the full-size original
Refreshed accessibility-first positioning (WCAG 2.2 / ADA / EAA)

2.3.2

Introduced an optional Pro upgrade: WooCommerce product context, scheduled background scans, and a coverage analytics dashboard (https://store.lessbutmore.ai)
Added contextual Pro information on the plugin’s own settings page (shown only there; hidden when Pro is active)

2.3.1

Updated the plugin homepage link
Corrected the stable tag so the 2.3.x release is delivered to all sites

2.3.0

Added developer extensibility hooks so companion add-ons can extend alt text generation without modifying the plugin
New filters: aatg_providers, aatg_generate_provider, aatg_generate_prompt, aatg_generate_language, aatg_pre_generate_alt_text, aatg_generate_result, and aatg_alt_text
New action: aatg_after_generate (fires after alt text is generated and saved)
Introduced a shared aatg_save_generated_alt_text() helper used across the single, bulk, on-upload, REST, and WP-CLI paths
No changes to existing behavior; tested up to WordPress 6.9

2.2.0

Added WP-CLI support: wp ai-alt-text activate, wp ai-alt-text generate, and wp ai-alt-text status
Bulk-generate alt text from the command line across many sites
activate configures the AI provider and API key (with optional live key validation)
generate supports –limit, –provider override, –force, –ids, –dry-run, and –yes flags
status reports the active provider, configured keys (masked), prompt/language, and alt text coverage counts
WordPress 6.8.1 compatibility maintained

2.1.2

Removed debug logging statements for production release
Cleaned up error_log calls throughout the codebase
Improved performance by removing unnecessary logging overhead

2.1.1

Restored language settings in admin interface
Updated support information for WordPress Plugin Directory
Fixed UI elements for better user experience
Minor bug fixes and improvements

2.1

Enhanced multi-provider support with OpenAI and Anthropic
Improved provider factory architecture
Better API key validation and error handling
Enhanced testing capabilities
WordPress 6.8.1 compatibility
Optimized performance and reliability

2.0.71

Added support for Anthropic (Claude) AI provider
Implemented multi-provider architecture with provider factory system
Enhanced settings with provider selection and individual API key management
Added comprehensive testing functionality for prompts
Improved error handling and user feedback
Better backward compatibility with existing OpenAI configurations
Enhanced bulk processing capabilities
Added provider-specific help links and documentation

2.0.7

Version adjustment

2.0.6

Fixed single image generation while classic editor is active

2.0.5

Added testing prompt to the plugin settings
Improved error handling and feedback
Fixed image processing in local environments
Improved bulk processing

2.0.4

Fixed admin page rendering issue

2.0.3

Switched to GPT-4o-mini for cheaper and faster experience

2.0.2

Fixed grid view not showing “Generate Alt Text” button

2.0.1

Added the new GPT-4o model for 50% cheaper and faster experience
Added custom prompt functionality
Added option to choose language

1.0.0

Initial release

It works great!

Free and great plugin

Did what promised

Excellent Little Plugin

easy to use

Beskriuwing

External Service Usage Disclosure

Support

Skermôfbyldings

Ynstallaasje

FAQ

Does this plugin require an API key?

Can I use it without an API key?

Is there a Pro version?

What AI providers are supported?

Can I switch between different AI providers?

How does this plugin use the AI APIs?

Can I generate alt text for multiple images at once?

Can I use a custom prompt?

Which provider is more cost-effective?

Can I use the plugin from the command line (WP-CLI)?

Is my data secure?