Skip to content
SPECIFICTION
Get listed

Altagonist

altagonist.com

From €5/mo Free plan Open source WebWindowsSelf-hosted
Visit altagonist.com
Spec score 9.1 #2 of 27 in AI Alt Text Generators

What it is

Altagonist is a WordPress plugin that creates image alt text using image metadata and page content. It can process hundreds of images at once and supports 70 languages. Its three quality levels draw on different amounts of context: Lite uses image metadata, Medium also uses page excerpts, and High uses full page content. Each image costs one, two, or three credits respectively. You can turn on automatic generation for uploaded images, choose a default language and quality level, and edit generated tags in the WordPress media library. JPEG, PNG, GIF, and WebP work natively; SVG, AVIF, TIFF, and BMP are converted automatically. The documentation says images are processed in real time and immediately discarded rather than stored. All plans support multiple WordPress sites, with credits shared among sites on the same license key. The Free plan costs nothing and includes 50 monthly credits. Personal, Pro, and Agency are listed as Coming Soon at €5 a month, €12 a month, and €29 a month, respectively. Unused credits do not roll over.

Spec sheet

What it does
Altagonist is a WordPress plugin that uses AI, image information and page content to create alt text saved in the WordPress media library.Read 15 Oct 2026 · altagonist.com
Product
Altagonist is a WordPress plugin that generates AI alt text using page content and image metadata.Read 8 Oct 2026 · altagonist.com
Support
The documentation directs users with persistent server availability issues to contact support.Read 8 Oct 2026 · altagonist.com
API and SDK documentation
The official documentation explains API use inside the plugin but provides no public endpoint reference or SDK instructions.Read 15 Oct 2026 · altagonist.com
Auto-generation
Users can enable automatic alt tag generation when images are uploaded and configure its default language and quality level.Read 8 Oct 2026 · altagonist.com
Automatic upload tagging
An option can generate alt tags automatically whenever new images are uploaded.Read 15 Oct 2026 · altagonist.com
Bulk generation
The plugin can process hundreds of WordPress images at once.Read 8 Oct 2026 · altagonist.com
Bulk processing
Users can select multiple media-library images and process them together.Read 15 Oct 2026 · altagonist.com
Computer vision
The WordPress directory describes the product as using computer vision for AI alt-tag generation.Read 15 Oct 2026 · wordpress.org
Context-aware generation
The generator can use the site name, page content and image metadata when creating descriptions.Read 15 Oct 2026 · altagonist.com
Credit costs
Lite costs one credit per image, Medium costs two, and High costs three.Read 15 Oct 2026 · altagonist.com
Credit expiry
Unused credits do not roll over; free credits reset monthly and paid credits reset on the billing anniversary.Read 15 Oct 2026 · altagonist.com
Credit renewal
Free credits reset on the first of each month, paid credits reset on the billing anniversary, and unused credits do not roll over.Read 8 Oct 2026 · altagonist.com
Developer presence
The WordPress profile says the altagonist account joined in March 2026 and maintains one plugin with 40-plus active installs.Read 15 Oct 2026 · profiles.wordpress.org
Documentation depth
The official documentation covers installation, licensing, languages, generation modes, credits, troubleshooting and FAQs.Read 15 Oct 2026 · altagonist.com
External API
The plugin sends image information and selected context to the Altagonist API when generation is triggered.Read 15 Oct 2026 · wordpress.org
Image formats
JPEG, PNG, GIF and WebP are handled natively, while SVG, AVIF, TIFF and BMP are converted automatically.Read 15 Oct 2026 · wordpress.org
Image handling
The documentation says images are processed in real time and immediately discarded without being stored.Read 8 Oct 2026 · altagonist.com
Image retention
The documentation says images are processed in real time and immediately discarded.Read 15 Oct 2026 · altagonist.com
Independent activity
WP Hive reports 220 total downloads, 20 active installations, zero support threads and zero ratings for Altagonist.Read 15 Oct 2026 · wphive.com
Independent compatibility test
WP Hive reports successful activation without PHP errors, JavaScript issues or resource errors in its automated tests.Read 15 Oct 2026 · wphive.com
Independent performance result
WP Hive measured an average front-page memory increase of about 2.2 KB and an average page-speed impact of about 1,000 milliseconds.Read 15 Oct 2026 · wphive.com
Installation
The plugin is available from the official WordPress directory for one-click installation and automatic updates.Read 15 Oct 2026 · altagonist.com
Language coverage
Alt tags can be generated in 70 listed languages.Read 15 Oct 2026 · altagonist.com
Languages
Alt text generation supports 70 languages.Read 8 Oct 2026 · altagonist.com
Limit: monthly quota
The free tier provides 50 credits per month, and Medium or High quality consumes two or three credits per image.Read 15 Oct 2026 · altagonist.com
Limit: paid availability
The Personal, Pro and Agency plans are marked Coming Soon on the product page.Read 15 Oct 2026 · altagonist.com
Limit: review evidence
The WordPress directory currently has no submitted user reviews, so repeated independent praise or complaints are not available there.Read 15 Oct 2026 · wordpress.org
Limit: service dependency
Generation depends on the external Altagonist service; the documentation advises retrying when the server is temporarily unavailable.Read 15 Oct 2026 · altagonist.com
Manual corrections
Generated alt tags can be edited manually in the WordPress media library.Read 8 Oct 2026 · altagonist.com
Missing-alt filter
The admin interface includes a filter showing only images without alt tags.Read 15 Oct 2026 · altagonist.com
Multiple sites
One license can be used on multiple WordPress sites, with credits shared between them.Read 15 Oct 2026 · altagonist.com
Notable news
The WordPress developer profile records the initial 1.0.1 SVN release on May 28, 2026.Read 15 Oct 2026 · profiles.wordpress.org
Open-source status
WordPress.org labels Altagonist open-source software, but the directory page does not name a specific license.Read 15 Oct 2026 · wordpress.org
Public-page impact
Generation runs in the WordPress admin and the plugin says it adds no scripts to public pages.Read 15 Oct 2026 · altagonist.com
Quality tiers
Lite uses image metadata, Medium adds short page excerpts, and High sends full page content plus nearby text.Read 15 Oct 2026 · altagonist.com
Rating on WordPress.org
No rating is shown because the plugin has 0 submitted reviews.Read 15 Oct 2026 · wordpress.org
Release history
WordPress.org lists version 1.0.1 with fixes for duplicate pagination, activation provisioning, unreachable-image retries and prefix compliance.Read 15 Oct 2026 · wordpress.org
Site performance
The documentation says alt tags are generated in the WordPress admin and the plugin adds no code or scripts to public pages.Read 8 Oct 2026 · altagonist.com
System requirements
The directory lists WordPress 6.0 or newer and PHP 7.4 or newer, tested through WordPress 7.0.7.Read 15 Oct 2026 · wordpress.org
WordPress storage
Generated text is written to WordPress's standard _wp_attachment_image_alt field.Read 15 Oct 2026 · wordpress.org

Plans and prices

Free Free 50 credits/month · all 70 languages · all quality tiers Read 15 Oct 2026 · altagonist.com
Personal €5 a month €60/year billed annually 200 credits/month · all 70 languages · all quality tiers · Coming Soon Read 15 Oct 2026 · altagonist.com
Pro €12 a month €144/year billed annually 500 credits/month · all 70 languages · all quality tiers · Coming Soon Read 15 Oct 2026 · altagonist.com
Agency €29 a month €348/year billed annually 2,500 credits/month · all 70 languages · all quality tiers · Coming Soon Read 15 Oct 2026 · altagonist.com

Every Altagonist plan and price →

Strong points and limits

Strong points

  • Supports 70 languages
  • Can process hundreds of images at once
  • Automatic generation can run on image upload
  • Generated tags can be edited in the media library

Limits

  • Unused credits do not roll over
  • Personal, Pro, and Agency plans are listed as Coming Soon
  • Higher quality levels use more credits per image

Who it suits

It suits WordPress site owners who need alt text for images across one or more sites, including bulk or automatic generation. Its language and quality choices may help teams managing images in different languages or with different amounts of page context.

Verdict

Altagonist offers bulk and automatic alt-text generation with adjustable context and language settings. The free tier includes 50 monthly credits, while the other listed plans are marked Coming Soon.

Where Specifiction places it

Alternatives to AltagonistAll alternatives →